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Model Catalog

ai& currently serves the open-weight models below. The list is dynamic — each organization sees only what it has access to, so the source of truth is always GET /v1/models.

Best price-to-performance

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Multimodal

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Largest context

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Model IDCapabilitiesContextInput / 1MOutput / 1M
Loading the current models…

Sorted by output price, low to high. Prices are USD per million tokens — see Pricing for how the formula computes a per-request cost.

To have ai& pick one of these per request instead of choosing yourself, see Automatic Selection.

CapabilityMeaning
reasoningEmits internal reasoning tokens (charged as output) and accepts reasoning_effort. The values it takes are listed in that model’s reasoning_efforts, since models don’t share one vocabulary. Reasoning can be turned off only if its levels include none.
tool_callingAccepts tools / tool_choice. See Tool Calling.
visionAccepts image inputs (image_url or file_id). See Vision.
videoAccepts video inputs by file_id. See Video Understanding.
documentAccepts PDF / document inputs.

A capability absent from the list means requests using that feature will be rejected at validation time.

Terminal window
curl https://api.aiand.com/v1/models
{
"object": "list",
"data": [
{
"id": "google/gemma-4-31b-it",
"name": "google/gemma-4-31b-it",
"object": "model",
"created": 1775474514,
"owned_by": "ai&",
"provider": "google",
"context_window": 262144,
"max_output_tokens": 32768,
"capabilities": [
"reasoning",
"tool_calling",
"vision",
"video",
"document"
],
"reasoning_efforts": [
"none",
"high"
],
"reasoning_effort_default": "none",
"description": "Largest Gemma 4 instruction model for open, self-hosted chat and reasoning",
"currency": "usd",
"input_per_1m": "0.200000",
"output_per_1m": "0.500000",
"cached_input_per_1m": "0.050000",
"deprecation_date": null
}
]
}
FieldTypeMeaning
idstringThe value to pass as "model" in chat / responses / messages.
providerstringThe lab that released the open weights (openai, google, qwen, …). All models are hosted on ai& infrastructure regardless of provider.
context_windowintMax combined input + output tokens.
max_output_tokensint | nullRecorded maximum generation length. null when no limit is recorded for the model. The list does not fill in a guess.
capabilitiesstring[]Supported features — see the table above.
reasoning_effortsstring[] | nullThe reasoning_effort values this model runs. Another known level runs at the next listed level up, or the highest, which can cost more than the level you sent; X-Reasoning-Effort reports the one applied. A model can turn reasoning off only if its levels include none, and a value outside the effort vocabulary is a 400. null only on models without the reasoning capability.
reasoning_effort_defaultstring | nullThe level to default a UI to for this model. Not applied server-side — omitting reasoning_effort leaves the upstream’s own default in place.
currencystringYour organization’s billing currency (usd or jpy), set at org creation. usd when called without an API key.
input_per_1mstringPrice per 1 million input tokens, in your billing currency. Numeric stored as a string for precision.
output_per_1mstringPrice per 1 million output tokens, in your billing currency.
deprecation_datestring | nullWhen the model stops serving requests, as an ISO 8601 timestamp. null when no retirement is scheduled.

GET /v1/models with an anthropic-version header returns the Anthropic shape — data[].display_name, created_at, has_more, first_id, last_id. Pricing and capabilities are only on the OpenAI surface.