Cheap Claude API for Roo Code: Opus & Sonnet 4.6, 80% Off

Why route Roo Code through KissAPI

Roo Code (the Cline fork) runs long agentic sessions that burn tokens fast. Wire it to KissAPI's OpenAI-compatible provider and keep the real Claude models while cutting cost by up to 80%.

Setup

In Roo Code settings, select OpenAI Compatible.
Base URL: https://api.kissapi.ai/v1.
Paste your KissAPI key.
Choose claude-sonnet-4-6 or claude-opus-4-6 as the model.

curl https://api.kissapi.ai/v1/chat/completions \
  -H "Authorization: Bearer $KISSAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"MODEL_ID","messages":[{"role":"user","content":"hi"}]}'

Pricing you'll pay

Model	Input / 1M	Output / 1M
Claude Opus 4.6	$15.00 → $3.00	$75.00 → $15.00
Claude Sonnet 4.6	$3.00 → $0.60	$15.00 → $3.00
Claude Haiku 4.5	$0.80 → $0.16	$4.00 → $0.80
GPT-5	$2.50 → $0.50	$10.00 → $2.00
GPT-5.5	$7.50 → $1.50	$30.00 → $6.00

Strikethrough = official list price. Green = KissAPI price. No subscription, pay only for tokens you use.

Power Roo Code for less

Get a KissAPI key, drop it into Roo Code, and start with $1 free credit.

Start Free — $1 credit

FAQ

How do I use Claude in Roo Code cheaply?

Set Roo Code's OpenAI-compatible base URL to https://api.kissapi.ai/v1 and use your KissAPI key. You get the real Claude models at up to 80% off.

Does Roo Code work with KissAPI out of the box?

Yes. Roo Code supports custom OpenAI-compatible endpoints, so no plugin or patch is needed — just the base URL and key.

What will it cost?

Pay-as-you-go per token. Claude Sonnet 4.6 is $0.60/1M input, Opus 4.6 is $3.00/1M input. New accounts get $1 in free credit.

Cheap Claude & GPT-5 API for Roo Code