Claude Sonnet 5.5 API Migration Guide (2026): Pricing, Speed, and Production Patterns
Claude Sonnet 5.5 launched on September 28, 2026. Learn the API model ID, pricing, migration steps, caching strategy, and practical code patterns for…
An index of 154 guides and tutorials on AI APIs, grouped into 6 topics. Pick a topic below or scroll to the full archive.
Head-to-head benchmarks and pick-the-right-model guides across Claude, GPT, Gemini, DeepSeek and more. 22 guides
Bring your own API key to Cursor, Cline, Antigravity and other editors, and switch models without changing your workflow. 8 guides
Setup, custom endpoints, subagents and CI recipes for Claude Code, Codex CLI, Gemini CLI, OpenCode, Aider and other terminal agents. 46 guides
Per-token pricing, prompt caching, spend limits, and how to cut your AI API bill without cutting quality. 12 guides
Rate limits, retries, fallback routing, deprecations and migrations: keep production traffic flowing when a provider hiccups. 30 guides
First-day access guides, quickstarts and API walkthroughs for newly released models and features. 36 guides
All articles · 154 posts, newest first
Claude Sonnet 5.5 launched on September 28, 2026. Learn the API model ID, pricing, migration steps, caching strategy, and practical code patterns for…
OpenAI released GPT-6.1 Sol on September 29, 2026. Learn its API pricing, 1.05M context limit, Responses API code patterns, and production routing…
GPT-6.1 Sol launched September 29, 2026 at $2/$10 per 1M tokens with $0.10 cached input. Pricing, migration from GPT-6 Sol, code, and a GPT-6 Astra…
Claude Sonnet 5.5 launched September 28, 2026 at $2/$10 per 1M tokens. Pricing, the 5 breaking changes from Sonnet 5, migration code, and a GPT-6 Sol…
Google DeepMind released AlphaGenome Atlas on September 8, 2026. Learn how to access its 9 billion variant predictions, use the AlphaGenome API, and…
Google shipped Gemini 3.8 Flash on September 2, 2026 at the same $0.75/$3.75 price as 3.7 Flash. Here is when to upgrade, how thinking effort changes…
GPT-6 Astra vs Claude Fable 5.1: a practical API comparison for 2026. Compare pricing, context windows, cache rates, and routing with real curl…
Learn how to use GPT-6 Astra in 2026. See pricing, 1,050,000-token context, practical code examples, and how to route hard tasks without wasting…
Grok 4.6 launched on August 26, 2026. Learn its 500k context window, pricing, code examples, and how to route long-running agents without blowing…
Z.ai released GLM-5.3-Flash with native multimodal input, a 1M-token context window, MIT weights, and low API pricing. Learn access patterns, token…
Google released Gemini Omni 1.1 Flash on August 27, 2026. Learn the API pricing, context limits, video controls, and production patterns for AI video…
OpenAI will stop serving its models through Cursor on November 12, 2026. Learn how to migrate your coding agent to a provider-agnostic setup with…
OpenAI launched GPT-Realtime-2 on August 27, 2026. Learn pricing, 128K context, reasoning effort, WebRTC setup, tool calls, and routing patterns for…
Google announced Gemini 3.5 Transcribe on August 26, 2026. Learn pricing, limits, API examples, and how to route speech-to-text workloads without…
OpenAI shared first measured results for its Jalapeño inference chip on August 25, 2026. Learn what faster, more efficient inference means for API…
DeepSeek V4 Flash Vision Exp adds image and screenshot understanding to DeepSeek V4 Flash. Learn API usage, pricing, routing, and implementation…
Google added AI Mode study tools to Search on August 19, 2026. Learn how developers can build a similar learning assistant with Gemini, GPT, or…
Slack Code brings AI coding agents into team channels. Learn how to route Claude, GPT-5.6, and cheaper models safely with pricing tables, API…
OpenAI expanded Zero Data Retention for frontier models on August 19, 2026. Learn what ZDR means for API teams, pricing, model routing, and secure…
Stripe agreed to acquire OpenRouter in August 2026. Learn what the deal means for AI model routing, API costs, fallback design, and developer…
OpenAI paused frontier RL training after Astra showed possible critical cyber capability. Here is a practical API security guide for AI agents, tool…
Qwen 3.8 27B dropped August 14, 2026 as an Apache 2.0 model scoring 52 on the Artificial Analysis Intelligence Index. Learn how to run it, control…
CNBC reported on August 14, 2026 that OpenAI enterprise revenue has passed consumer revenue. Learn how developers should plan GPT-5.6 API routing…
SpaceX closed its $60B Cursor acquisition on August 14, 2026. Here's what it means for developers and how to keep your coding agent portable across…
Google released Gemini 3.7 Flash on August 13, 2026. Learn Gemini 3.7 Flash API pricing, context limits, code examples, and when to use Standard…
OpenAI previewed GPT-5.6 Sol Ultrafast on August 13, 2026. Learn when to use Standard, Fast, and Ultrafast API routing, with pricing tables and code…
OpenAI's August 12, 2026 enterprise AI report shows agentic AI moving from assistance to execution. Learn how to build API workflows with GPT-5.6…
OpenAI announced Daybreak models on AWS on August 11, 2026. Learn what Daybreak Blue and Daybreak Red mean for developers, API routing, pricing, and…
OpenAI's August 10, 2026 ChatGPT Business Premium seats add 5x usage for $125 per month. Compare seats with API routing and choose the right setup…
DeepSeek warns that API prices will rise significantly soon. Learn how cache-hit pricing, prompt layout, and routing can cut DeepSeek API costs…
Databricks made Kimi K3 available through Unity AI Gateway on August 6, 2026. A practical guide to routing Kimi K3 in an enterprise gateway: pricing…
DeepSeek says its API prices will rise significantly soon. Learn what is confirmed, how to budget for the change, and how to reduce DeepSeek API…
After the UK AISI August 2026 cyber-testing incident involving GPT-5.6 Sol and Mythos 5, here is how to sandbox AI coding agents: network egress…
Claude Opus 5 launched in early August 2026 at $5 per million input tokens and $25 per million output tokens. A practical API access guide with…
Google introduced Gemini Robotics 2 on July 30, 2026. This practical guide shows developers how to prototype robot reasoning flows with Gemini API…
Grok Voice Think Fast 2.0 goes live via grok-voice-latest on August 5, 2026 at $0.08 per minute of audio. Learn its speech-to-speech design…
OpenAI says GPT-5.4 and GPT-5.4 mini will retire in Codex on August 31, 2026. Here is how to migrate Codex workflows to GPT-5.6 Terra and Luna with…
DeepSeek V4 Flash 0731 launched July 31, 2026 at $0.14 input and $0.28 output per 1M tokens with a 1M context window. Practical API guide with curl…
OpenAI cut GPT-5.6 Luna prices 80% and Terra 20% on July 30, 2026. Here's what changed, exact new pricing, and how to migrate high-volume workloads…
OpenAI's July 29, 2026 GPT-5.6 update gives developers a 1,050,000-token context window, Sol/Terra/Luna pricing tiers, and a cleaner way to route…
OpenAI reported on July 27, 2026 that 43.5% of occupation-specific ChatGPT work messages cross job boundaries. Learn how to build API workflows that…
OpenAI Presence launched July 22, 2026 as a managed enterprise agent product. Here's what it does, when to use it, and how to build a comparable…
DeepSeek retired the deepseek-chat and deepseek-reasoner aliases on July 24, 2026. Learn how to migrate to deepseek-v4-flash or deepseek-v4-pro with…
Alibaba unveiled Qwen 3.8, a 2.4 trillion-parameter model, on July 19, 2026. Learn how to access the Qwen 3.8 API with pricing, context window, and…
OpenAI's July 2026 GPT-5.6 API docs position Terra as the balanced model tier. Learn GPT-5.6 Terra pricing, context limits, routing rules, and code…
Learn how OpenAI's July 21, 2026 small business push changes GPT-5.6 routing. Compare Sol, Terra, and Luna with pricing, context, code, and practical…
Anthropic opened rare disease research grants with up to $50,000 in Claude credits. Here is how developers can build a practical Claude API pipeline…
Learn GPT-5.6 Luna API pricing, 1,050,000-token context, and what OpenAI's July 18, 2026 Codex CLI context-window fix means for developers. Includes…
Codex CLI 0.144.6 corrected GPT-5.6 Sol, Terra and Luna to 272,000 tokens. Why wrong metadata makes agents overfill context, and how to update and…
Kimi K3 API access guide for developers: July 2026 launch facts, pricing, 1M context, reasoning_effort, vision input, code examples, and routing…
OpenAI Codex CLI 0.144.5 improved dangerous-command detection on July 16, 2026. Learn what it means for AI coding agents, approval modes, model…
Thinking Machines released Inkling, a 975B-parameter open-weights model, on July 15, 2026. Here's how to access it via API, self-host it, and what…
OpenAI Build Week opened July 13, 2026. Learn how to build Codex-style API workflows with GPT-5.6, GPT-5.3-Codex, hosted shell, code interpreter…
OpenAI is retiring Atlas on August 9, 2026. Learn how to migrate browser-agent workflows to API-based agents using GPT-5.6, tools, fallbacks, and…
DeepSeek will deprecate deepseek-chat and deepseek-reasoner on July 24, 2026. Learn how to migrate to deepseek-v4-flash and deepseek-v4-pro with…
OpenAI moved Codex into the ChatGPT desktop app on July 9, 2026. Learn how developers should design GPT-5.6 Codex workflows, API routing, tool costs…
OpenAI launched ChatGPT Work on July 9, 2026. Learn how developers can design GPT-5.6 workflow automation with tools, schedules, approvals, and cost…
OpenAI made GPT-5.6 generally available on July 9, 2026. Learn how to route API workloads across GPT-5.6 Sol, Terra, and Luna with pricing, code…
Meta launched Muse Spark 1.1 and the Meta Model API on July 9, 2026. Learn pricing, context window, routing patterns, and practical integration code…
OpenAI introduced GPT-Live on July 8, 2026. Learn what full-duplex voice agents change, GPT-Realtime 2.1 pricing, WebRTC setup, architecture…
CNBC reported on July 7, 2026 that Chinese AI models are gaining U.S. adoption as OpenAI and Anthropic costs rise. Learn practical API routing with…
OpenAI Codex CLI 0.142.5 fixed Responses WebSocket payload logging on July 1, 2026. Learn how to secure AI coding agents, logs, and API traces.
Google released Nano Banana 2 Lite for the Gemini API on June 30, 2026. Learn pricing, model IDs, routing patterns, and curl, Python, and Node.js…
How to build a unified LLM API gateway with fallback routing in 2026: one OpenAI-compatible key for Claude, GPT-5, and Gemini, automatic retries on…
An honest KissAPI review for 2026: one OpenAI-compatible API key for Claude, GPT-5, and Gemini, pay-as-you-go pricing with no 5-hour windows, top-up…
Google shipped Gemini Omni Flash to the API on June 30, 2026. Learn how to generate and conversationally edit video at $0.10/sec, with pricing…
The best Claude API alternatives in 2026 compared: OpenRouter, Eden AI, and KissAPI. Pricing models, model coverage, compatibility, and who each one…
Claude Code v2.1.200 changed permissions and fixed background agents. Learn how to run safer subagents, control token spend, and route API work in…
Sonnet 5 drops manual extended thinking, rejects custom sampling params, and its new tokenizer can bill ~30% more tokens. Migrate without breaking…
DeepSeek open-sourced DSpark in July 2026. Learn what speculative decoding changes for AI API latency, cost, routing, and production app design.
Learn how to use Grok 4.3 on Amazon Bedrock with the right endpoint, model ID, and code examples. Practical setup, routing tips, and cost advice for…
Google's Gemini 3.1 Flash-Lite preview shuts down July 9, 2026. Learn how to migrate to the GA model, update endpoints, test quality, and control API…
Sakana AI launched Fugu and Fugu Ultra on June 22, 2026 — an orchestration model behind one OpenAI-compatible API. Here's how to call it, when to use…
Google Gemini 3 Pro Image and Gemini 3.1 Flash Image appeared in API provider listings on June 18, 2026. Learn when to route image jobs to Pro, when…
Google says Gemini CLI and free Gemini Code Assist individual requests stop serving on June 18, 2026. Here is a practical Antigravity CLI migration…
OpenAI Codex added Record & Replay and thread handoff on June 18, 2026. Learn how developers can turn repeatable AI coding workflows into reusable…
A practical GLM-5.2 API access guide after Z.ai's June 2026 release: pricing, 1M context use cases, curl, Python, Node.js, routing, and cost controls.
OpenAI's LifeSciBench (June 17, 2026) shows why final-answer scoring isn't enough. Here's how to build rubric-based, multi-step LLM API evals for…
OpenAI released Codex CLI 0.140.0 on June 15, 2026. Learn how to use /usage, import Claude Code chats, set budgets, and route coding-agent API…
A practical GPT-5.3-Codex API guide for 2026: pricing vs GPT-5.5, when to use the dedicated Codex model, and working curl, Python, and Node.js…
Connect the Claude Opus 4.8 API in Claude Code: set the environment variables, switch models with /model, and troubleshoot common setup errors.
Learn how to build OpenAI-compatible API fallback routing for 429s, outages, model limits, and cost spikes. Includes curl, Python, Node.js, tables…
A practical Gemini 3.5 Flash API cost optimization guide for developers. Learn routing rules, batching, caching, fallback patterns, and curl, Python…
Claude Fable 5 API guide for 2026. Model ID, pricing vs Opus 4.8 and GPT-5.5, 1M context window, prompt caching, and working curl, Python, and…
OpenRouter takes a cut of every credit top-up. Seven unified LLM gateways compared on real price, model coverage, and Claude Code or Cursor support…
Learn how to compact AI coding agent context in 2026 without breaking task continuity. Includes practical rules, Python and Node.js examples, budget…
Learn how to handle Gemini API rate limits in 2026 with exponential backoff, model fallback, queueing, and OpenAI-compatible backup routing. Includes…
A practical Claude Code token budget automation guide for 2026. Learn how to estimate spend, enforce per-task budgets, add fallbacks, and prevent…
Get reliable JSON from LLM APIs in 2026. Compare JSON mode, function calling, and strict schema constraints with working curl, Python, and Node.js…
A practical 2026 guide to AI API spending limits and budget guardrails. Per-key caps, circuit breakers, usage alerts, and production-ready Python and…
Claude Opus 4.8 just launched. A developer guide to Opus 4.8 API access in 2026: what changed, how to call it via OpenAI-compatible endpoints, curl…
A practical Claude Code MCP setup guide for developers: install local MCP servers, connect tools safely, route API calls, and control token costs in…
Point Qwen Code at any OpenAI-compatible endpoint with your own key. Covers config.ts and env vars, a curl sanity check, and which model to route…
Learn how Gemini Managed Agents work, when to use them instead of a normal chat API, and how to design tools, sandboxes, retries, and cost controls…
Learn how to cut Claude Code API spend with subagents, model routing, context budgets, retries, and OpenAI-compatible gateway setup. Includes Python…
A practical Claude Opus 4.7 API access guide for developers in 2026. Compare pricing, set up OpenAI-compatible endpoints, test with curl, Python, and…
Use GPT-5-Codex with Codex CLI through the Responses API or an OpenAI-compatible API gateway. Includes setup, environment variables, GitHub PR review…
Set up Claude Code in GitLab CI for automated merge request reviews in 2026. Includes YAML pipeline, API endpoint setup, token budgeting, diff…
Set up Codex CLI in GitHub Actions for AI code review, test failure triage, and pull request summaries. Includes workflow YAML, curl checks, Python…
Build a practical API fallback router for Codex CLI and other coding agents in 2026. Includes retry rules, model fallback strategy, token budgets…
Learn how to set up smart model routing for Gemini CLI in 2026. Route cheap tasks to fast models, coding work to stronger models, and fallback on…
Learn how to manage AI coding agent sessions in 2026: context windows, token budgets, branch-and-merge workflows, retries, API routing, and cost…
Set up Claude Code Desktop with a custom API endpoint in 2026. Learn base URL options, API key configuration, model routing, curl tests, cost…
Compare GPT-5.5, Claude Opus 4.6, and Gemini 3.1 Pro API pricing in 2026 with real token math, routing advice, and code examples for developers.
GPT-5.5 doubled its API price. Anthropic killed flat-rate subscriptions. GitHub Copilot switched to token billing. Three cost hikes in one week —…
Run long AI tasks without timeouts using OpenAI Background Mode on the Responses API: background: true, polling, retries, idempotency keys, and job…
Learn how to use the GPT Image 2 API in 2026 with image generation, edits, pricing-aware workflows, curl examples, and production tips for developers.
Compare the real API costs of Claude Code, Cursor, Codex CLI, and Gemini CLI in 2026. Includes token math, model routing tips, and OpenAI-compatible…
Step-by-step OpenAI Realtime API voice agent tutorial for 2026. Learn when to use speech-to-speech vs chained audio, create client secrets, connect…
Set up GLM-5.1 in Claude Code the right way in 2026. Learn how Anthropic-compatible gateways work, which env vars to set, how to remap models, and…
Set up GLM-5.1 in Cursor IDE with a custom OpenAI-compatible endpoint. Includes curl, Python, Node.js tests, exact settings to change, and fixes for…
Learn how to use the GLM-5.1 API in 2026. Includes endpoint setup, pricing reference, curl/Python/Node.js examples, and practical tips for agentic…
Learn how to set up Gemini CLI in 2026. Install it with npm or Homebrew, choose the right auth method, run headless prompts, and fix the setup errors…
Learn how to connect Codex CLI to a custom OpenAI-compatible API endpoint in 2026. Includes quick setup, config.toml profiles, curl/Python/Node.js…
Step-by-step guide to connect Aider to Claude through an OpenAI-compatible endpoint. Includes environment variables, model naming…
Hands-on Qwen 3.6 Plus API guide for 2026. Learn pricing, model IDs, OpenAI-compatible setup, and working curl, Python, and Node.js examples.
Hands-on Gemma 4 API guide for 2026. Learn model sizes, pricing, OpenAI-compatible setup, and working curl, Python, and Node.js examples.
Gemini 3.1 Pro vs GPT-5.4 API comparison for developers in 2026. Side-by-side benchmarks, pricing breakdown, code examples, and practical guidance on…
Step-by-step guide to using Google's Gemini 3.1 Pro API with Cursor IDE in 2026. Configure custom endpoints, compare pricing vs Claude and GPT-5.4…
Complete guide to Google's Gemini 3.1 Pro API in 2026. Pricing ($2/$12 per 1M tokens), 1M context window, Python and Node.js code examples, and how…
Complete guide to the DeepSeek V3.2 API in 2026. Setup instructions, pricing breakdown, Python and Node.js code examples, thinking mode, and tool-use…
A practical comparison of GPT-5.4 mini and Claude Sonnet 4.6 for developers. Pricing, code examples, routing strategy, and when each model is the…
Set up Claude Opus 4.6 in Cline the right way. Learn which provider to pick, how to test your API key with curl, Python, and Node.js, and how to…
Set up GPT-5.4 in Cursor IDE with your own OpenAI-compatible API endpoint. Includes curl, Python, Node.js tests, exact settings to change, and fixes…
Learn how to connect OpenCode to any OpenAI-compatible API in 2026. Custom provider setup, opencode.json examples, curl/Python/Node.js tests, and…
Compare reasoning model APIs in 2026: OpenAI o3, DeepSeek R1, and Claude Extended Thinking. Pricing, benchmarks, code examples, and when to use each…
Complete guide to using Llama 4 Scout and Maverick via API in 2026. Covers pricing, benchmarks, Python and Node.js code examples, and how to access…
Set up Claude Code in GitHub Actions the right way in 2026. Install the GitHub app, choose OAuth vs API key, tighten permissions, and automate PR…
Learn a production-ready AI API idempotency and retry strategy for 2026. Prevent duplicate charges, handle 429/5xx safely, and ship resilient Python…
Learn how to use Claude prompt caching to cut API costs in 2026. Practical patterns, token math, and production-ready curl, Python, and Node.js…
A practical OpenAI Responses API rate limit handling guide for 2026. Learn 429 recovery, Retry-After logic, token-aware queues, adaptive concurrency…
Compare the real API costs of Claude Code, Codex CLI, and Gemini CLI in 2026. Breakdown of token usage, monthly bills, and how to cut coding agent…
Complete guide to GPT-5.4 mini and nano APIs. Compare pricing, benchmarks, and context windows. Includes Python and curl code examples for both…
Step-by-step guide to setting up your own API key (BYOK) with Cursor, Cline, and Claude Code in 2026. Cut your AI coding costs by 60-80% with a…
Learn how to build a custom MCP server in Python using FastMCP. Connect Claude Code, Cursor, and other AI tools to your own APIs, databases, and…
Complete guide to the Qwen 3.5 model family in 2026. Covers all 10+ models from 0.8B to 397B, API pricing across providers, setup with Python and…
Learn how to stream responses from OpenAI, Claude, and other AI APIs in Python and Node.js. Complete code examples with error handling, token…
Complete guide to Qwen3-Coder API in 2026. Compare Qwen3-Coder-Next vs standard, set up API access in Python and Node.js, and learn how to run it…
DeepSeek V4 vs Claude Sonnet 4.6 API comparison for developers in 2026. We compare pricing, benchmarks, context windows, coding performance, and…
Complete GPT-5.4 API guide with setup instructions, pricing breakdown for all three variants, and working code examples in Python and curl. Covers…
Step-by-step tutorial: build an AI-powered code review bot using GitHub Actions and Claude/GPT-5 API. Catches bugs, suggests improvements, and posts…
Get DeepSeek V4 running via API in minutes: full pricing, Python and Node.js examples, multimodal inputs, and how cache hits and off-peak rates cut…
Step-by-step guide to setting up Claude Code with a custom API key and endpoint. Use third-party providers, save money, and bypass regional…
Get started with Gemini 3.1 Pro API in Python. Learn streaming responses, thinking levels (low/medium/high), context caching, and how to cut costs…
Learn how to use the Claude Agent SDK for Python to automate coding tasks, build custom tools, and orchestrate AI agents programmatically…
Learn how OpenAI-compatible APIs let you access Claude Sonnet 4.6, GPT-5, and other models through a single endpoint. Code examples in Python…
GPT-4o, GPT-4.1, GPT-4.1 mini and o4-mini are retired. Here's the replacement for each, what breaks in your API code, and how to migrate before…
Head-to-head comparison of Claude Sonnet 4.6 and GPT-5 API for developers. Benchmarks, pricing, code examples, and practical recommendations for…
A practical 2026 guide to handling Claude Code API rate limits with retry backoff, request queues, token budgeting, and graceful fallbacks. Includes…
Step-by-step tutorial to build a functional AI agent with Claude Sonnet 4.6 API in Python. Includes tool use, memory, and a complete working example…
Head-to-head comparison of Claude Sonnet 4.6 and Gemini 3.1 Pro for coding, reasoning, and API usage. Benchmarks, pricing, context windows, and which…
Complete guide to accessing GPT-5 API in 2026. Compare GPT-5 models, pricing, and learn how to integrate GPT-5 into your applications using an…
Every way to reach Claude's API in 2026, priced side by side: official Anthropic vs pay-as-you-go gateways. See the per-1M-token math and pick…
Point Cursor IDE at Claude via an OpenAI-compatible endpoint in about 3 minutes. Covers base URL, model selection, and using Claude with no Anthropic…