Claude Haiku 4.5

Capabilities

Capability	Supported
Vision (image input)	Yes
Document input	Yes
Audio input	No
Tool calling	Yes
Thinking	No

Thinking

This model does not expose a controllable thinking mode. Sending reasoning_effort has no effect on it.

Parameters

Every field below except brand is relayed to the upstream gateway untouched. Parameters beyond this list may work but are not guaranteed. brand is the one field AI HUB consumes.

Parameter	Type	Notes
`model`	string	Required. A published model slug (see Models).
`messages`	array	Required. Role/content turns: system, user, assistant.
`stream`	boolean	Optional. Stream tokens as server-sent events. Defaults to false.
`temperature`	number	Optional. Relayed to the model untouched.
`max_tokens`	integer	Optional. Caps the response length.
`top_p`	number	Optional. Relayed to the model untouched.
`stop`	string \| array	Optional. One stop string or an array of them. Relayed to the model untouched.
`response_format`	object	Optional. Relayed to the model untouched. Support varies by model.
`tools`	array	Optional. Function/tool definitions. Relayed to the model untouched. Support varies by model.
`tool_choice`	string \| object	Optional. Relayed to the model untouched.
`seed`	integer	Optional. Relayed to the model untouched. Support varies by model.
`reasoning_effort`	string	Optional. low, medium, or high. Only has an effect on a thinking-capable model, as listed on that model's own page.
`brand`	string	Optional. A company profile id from the account. Unlike every other field here, this one is NOT relayed. AI HUB consumes it, prepends the profile's voice as a system message, and removes it before the request reaches the model.
`knowledge`	string \| array	Optional. A company profile id, or an array of up to 10 document ids, from the account. This field is NOT relayed. AI HUB retrieves the passages most relevant to the last user message, prepends them as a system message, and removes the field before the request reaches the model. Document ids are listed by GET /v1/knowledge. An unknown id returns 404 knowledge_not_found.

Example

cURL

curl https://console.aimodelhub.ai/v1/chat/completions \
  -H "Authorization: Bearer $AIHUB_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"anthropic-claude-haiku-4-5","messages":[{"role":"user","content":"Hello!"}]}'