Why teams switch
Anthropic's official API is excellent, but the list price adds up fast once you run agents, coding assistants, or high-volume batch jobs. KissAPI routes the exact same Claude models through a single endpoint at a fraction of the cost, with no monthly commitment and no VPN required.
Price comparison
| 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.
Drop-in, no code rewrite
KissAPI speaks the OpenAI format, so most SDKs and tools work by changing two things: the base URL and your API key.
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"}]}'What you keep
- The real Claude Opus 4.6, Sonnet 4.6 and Haiku 4.5 — not a clone
- 200K context, extended thinking, streaming
- GPT-5 and other models behind the same key, so you can route freely
Try the cheaper Claude API
Sign up, grab a key, keep your code. $1 free credit to test any model.
Start Free — $1 creditFAQ
Is this the real Claude API?
Yes. KissAPI relays the genuine Anthropic Claude models (Opus 4.6, Sonnet 4.6, Haiku 4.5). You get the same model quality, just at a lower price and behind an OpenAI-compatible endpoint.
How much cheaper is it than Anthropic?
Up to 80% off official list pricing depending on the model. For example Claude Opus 4.6 input drops from $15.00 to $3.00 per 1M tokens.
Do I need to rewrite my code?
No. Point your existing OpenAI-compatible client at https://api.kissapi.ai/v1 and swap in your KissAPI key. Model ids stay familiar.
Is there a subscription?
No. It's pay-as-you-go. You top up a balance and spend only on the tokens you use. New accounts get $1 in free credit.