Claude Haiku 5.5 is live: Anthropic's fastest Claude at list price
anthropic/claude-haiku-5.5/chat
Claude Haiku 5.5, released by Anthropic on 7 October, is now on SpicyAPI as one OpenAI-compatible chat endpoint: anthropic/claude-haiku-5.5/chat.
| Claude Haiku 5.5 | |
|---|---|
| Input / output, prompts up to 100,000 tokens | $0.10 / $0.50 per million tokens |
| Input / output, prompts over 100,000 tokens | $0.50 / $2.50 per million tokens |
| Context window / longest reply | 1,000,000 / 128,000 tokens |
| Message content | Text and images |
| Tool calls | Up to 128 tools; tool_choice can force a call |
Content tests. We add no filter of our own. In 24 test requests on 8 October the model wrote 20 in full, toned 2 down and refused 2. An intimate scene between two adults came back complete in 8 of 9 attempts; the refusals were explicit, part-by-part figure studies.
Good to know. The model decides how much to think, so there is no reasoning_effort; there is no stop or temperature either. max_tokens does not cut the reply short: ask for the length you want in the prompt, and you pay for the tokens actually written. Cache hits cost $0.10 per million tokens.
Short answers came back in three to five seconds in our tests. Failed requests are not charged.