GET

/v1/models/opencode/gpt-5.1-codex-max

Accept:

provider opencodestatus activefirst seen Nov 13, 2025last seen 7m ago

rawId	gpt-5.1-codex-max
displayName	GPT-5.1 Codex Max
id	opencode-gpt-5-1-codex-max
activity	chat
schemaEndpointId	inference/openai/v1/responses input · output
releasedAt	1762992000 — Nov 13, 2025
firstSeenAt	1762992000 — Nov 13, 2025
lastSeenAt	1794565141 — 7m ago
pricing	$1.25 / 1M input · $10 / 1M output → open calculator https://raw.githubusercontent.com/anomalyco/opencode/dev/services/site/src/docs/content/console/models.mdx input_tokens (usage) · output_tokens (usage) · cache_read_tokens (usage)
contextWindow	400000
maxOutput	128000
modalities	{"input":["text","image"],"output":["text"]}
capabilities	{"tools":true,"reasoning":true,"structured_outputs":true,"vision":true}
knowledgeCutoff	"2024-09-30"
openWeights	false
providerMetadata	{"attachment":true,"canonical_model_id":"openai/gpt-5.1-codex-max","cost":{"cache_read":0.125,"input":1.25,"output":10},"description":"Coding-optimized GPT model for repository edits, reviews, and agentic software work","family":"gpt-codex","id":"gpt-5.1-codex-max","knowledge":"2024-09-30","last_updated":"2025-11-13","limit":{"context":400000,"input":272000,"output":128000},"modalities":{"input":["text","image"],"output":["text"]},"name":"GPT-5.1 Codex Max","open_weights":false,"provider":{"api":"https://opencode.ai/inference/openai/v1","npm":"@ai-sdk/openai"},"reasoning":true,"reasoning_options":[{"type":"effort","values":["low","medium","high","xhigh"]}],"release_date":"2025-11-13","structured_output":true,"temperature":false,"tool_call":true}
weightsUrl · requestMap	not published by this provider’s list endpoint

Endpoints & schemas

GET /v1/schemas/opencode →

endpoint	activity
inference/openai/v1/responses input · output	chat

endpoints matching this model — the provider has more, see /v1/schemas/opencode

Sources

field	recorded source
contextWindow	https://models.dev/api.json listing opencode.models.gpt-5.1-codex-max.limit.context Source trace `cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff`
maxOutput	https://models.dev/api.json listing opencode.models.gpt-5.1-codex-max.limit.output Source trace `cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff`
modalities	https://models.dev/api.json listing opencode.models.gpt-5.1-codex-max.modalities Source trace `cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff`
pricing	Source linked above. docs-derived Source trace `7c679ba1d370b4f455e84534094cfa25c1a6ce2b3c48479fdfbda654aaddda89`
reasoning	https://models.dev/api.json listing opencode.models.gpt-5.1-codex-max.reasoning_options Source trace `cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff`
knowledgeCutoff	https://models.dev/api.json listing opencode.models.gpt-5.1-codex-max.knowledge Source trace `cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff`
openWeights	https://models.dev/api.json listing opencode.models.gpt-5.1-codex-max.open_weights Source trace `cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff`
schemaEndpointId	https://models.dev/api.json listing opencode.models.gpt-5.1-codex-max.provider Source trace `cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff`
capabilities.tools	https://models.dev/api.json listing opencode.models.gpt-5.1-codex-max.tool_call Source trace `cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff`
capabilities.reasoning	https://models.dev/api.json listing opencode.models.gpt-5.1-codex-max.reasoning Source trace `cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff`
capabilities.structured_outputs	https://models.dev/api.json listing opencode.models.gpt-5.1-codex-max.structured_output Source trace `cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff`
capabilities.vision	https://models.dev/api.json listing opencode.models.gpt-5.1-codex-max.modalities.input Source trace `cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff`
requestMap	https://opencode.ai/docs/zen Value unknown (null); not published in the checked source · checked 2026-10-09.
requestMapFields.replayReasoningContent	https://opencode.ai/docs/zen Value unknown (null); not published in the checked source · checked 2026-10-09.
activity	Source unknown — no source URL recorded.

Use it

shell

$ curl https://modelschemas.com/v1/schemas/opencode/chat/inference/openai/v1/responses # request schema
$ curl -X POST https://modelschemas.com/v1/validate -d '{"provider":"opencode","endpointId":"inference/openai/v1/responses","payload":{…}}'
$ curl -X POST https://modelschemas.com/v1/estimate -d '{"provider":"opencode","model":"gpt-5.1-codex-max","usage":{"input_tokens":1200,"output_tokens":400}}'