Antimatter

GET/v1/modelsNo key

The union of every configured upstream, normalized and deduped, with the 10 autopilot policy ids prepended when the catalog is not empty. Pricing fields are independently nullable: an upstream that publishes no price yields null rather than a guess.

Answer 200

The catalog with per model pricing and context length.

Fields of the 200 answer
Field	Type	What it is
object	"list"
data	array of Model
data[].id	string	Namespaced as vendor/model.
data[].object	"model"
data[].created	integer	Unix seconds when the upstream first listed it, where it says.
data[].owned_by	string	The serving adapter: openai, anthropic, openrouter, or antimatter.
data[].name	string
data[].context_length	integer or null
data[].max_output_tokens	integer	The most tokens one answer may generate on this model, where the upstream publishes it. max_tokens is clamped here. Absent when unpublished.
data[].pricing	Pricing
data[].pricing.promptPer1M	number or null	USD per million prompt tokens. Null when the upstream publishes no price.
data[].pricing.completionPer1M	number or null	USD per million completion tokens. Null when the upstream publishes no price.
data[].pricing.cacheReadPer1M	number or null	USD per million prompt tokens the vendor served from its own cache. Absent or null when the vendor publishes none, and such tokens bill at the prompt rate.
data[].pricing.cacheWritePer1M	number or null	USD per million prompt tokens written into the vendor's cache. Absent or null when the vendor publishes none, and such tokens bill at the prompt rate.
data[].pricing_unknown	boolean	True when no price could be established for this model. It is refused on house money (503 pricing_unavailable) and must never be read as free. Absent on the autopilot entries.
data[].modality	string	One of "text", "multimodal".
data[].output_modalities	array of string	What the model produces, where the upstream says: text, image, speech, transcription or embeddings. Image, speech and transcription models are served by /v1/images/generations and /v1/audio/*, embedding models by /v1/embeddings and listed at GET /v1/embeddings/models.
data[].input_modalities	array of string	What the model reads, where the upstream says: text, image, audio, file or video. Absent when the upstream does not say.
data[].holders_only_until	integer	Unix seconds when a model still in its $ANTI holders' window opens to everyone. Until then it serves holders only (the account that minted the key holds the lowest holder tier) and anyone else is refused with 403 holder_only; autopilot never routes a non holder to it. Absent on every other model, and on a deployment without holder tiers.