GET

/v1/models/opencode/nemotron-3-ultra-free

Accept:

provider opencodestatus activefirst seen Jun 4, 2026last seen 33d agodeprecated Oct 11, 2026

rawId	nemotron-3-ultra-free
displayName	Nemotron 3 Ultra Free
id	opencode-nemotron-3-ultra-free
activity	chat
schemaEndpointId	v1/chat/completions input · output
releasedAt	1780531200 — Jun 4, 2026
firstSeenAt	1780531200 — Jun 4, 2026
lastSeenAt	1791741817 — 33d ago
pricing	$0 / 1M input · $0 / 1M output → open calculator https://opencode.ai/docs/zen input_tokens (usage) · output_tokens (usage) · cache_read_tokens (usage)
contextWindow	1000000
maxOutput	128000
modalities	{"input":["text"],"output":["text"]}
capabilities	{"tools":true,"reasoning":true,"vision":false}
knowledgeCutoff	"2026-02"
openWeights	true
requestMap	{"thinking":null,"maxTokensField":null,"developerRole":null,"replayReasoningContent":true,"store":null,"strictTools":null,"sessionAffinity":null,"cacheControl":null,"toolStream":null,"reasoningEffort":null}
providerMetadata	{"id":"nemotron-3-ultra-free","name":"Nemotron 3 Ultra Free","description":"Largest Nemotron 3 model for maximum open-weight reasoning and agent accuracy","family":"nemotron-free","attachment":false,"reasoning":true,"reasoning_options":[],"tool_call":true,"interleaved":{"field":"reasoning_content"},"temperature":true,"knowledge":"2026-02","release_date":"2026-06-04","last_updated":"2026-06-04","modalities":{"input":["text"],"output":["text"]},"open_weights":true,"limit":{"context":1000000,"output":128000},"cost":{"input":0,"output":0,"cache_read":0},"canonical_model_id":"nvidia/nemotron-3-ultra-550b-a55b"}
weightsUrl	not published by this provider’s list endpoint

Endpoints & schemas

GET /v1/schemas/opencode →

endpoint	activity
v1/chat/completions 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.nemotron-3-ultra-free.limit.context Source trace `9d0280a6a7399f7bb123046217979890fcab2e18d5f0f681b6cf4ad819ea116c`
maxOutput	https://models.dev/api.json listing opencode.models.nemotron-3-ultra-free.limit.output Source trace `9d0280a6a7399f7bb123046217979890fcab2e18d5f0f681b6cf4ad819ea116c`
modalities	https://models.dev/api.json listing opencode.models.nemotron-3-ultra-free.modalities Source trace `9d0280a6a7399f7bb123046217979890fcab2e18d5f0f681b6cf4ad819ea116c`
pricing	Source linked above. docs-derived Pricing Source trace `8fd8a929f03ddc4add5a17fe1cf77e13414f16765e85773e8638658cac3c3421`
knowledgeCutoff	https://models.dev/api.json listing opencode.models.nemotron-3-ultra-free.knowledge Source trace `9d0280a6a7399f7bb123046217979890fcab2e18d5f0f681b6cf4ad819ea116c`
openWeights	https://models.dev/api.json listing opencode.models.nemotron-3-ultra-free.open_weights Source trace `9d0280a6a7399f7bb123046217979890fcab2e18d5f0f681b6cf4ad819ea116c`
capabilities.tools	https://models.dev/api.json listing opencode.models.nemotron-3-ultra-free.tool_call Source trace `9d0280a6a7399f7bb123046217979890fcab2e18d5f0f681b6cf4ad819ea116c`
capabilities.reasoning	https://models.dev/api.json listing opencode.models.nemotron-3-ultra-free.reasoning Source trace `9d0280a6a7399f7bb123046217979890fcab2e18d5f0f681b6cf4ad819ea116c`
capabilities.vision	https://models.dev/api.json listing opencode.models.nemotron-3-ultra-free.modalities.input Source trace `9d0280a6a7399f7bb123046217979890fcab2e18d5f0f681b6cf4ad819ea116c`
requestMap	https://models.dev/api.json listing opencode.models.nemotron-3-ultra-free.interleaved.field Source trace `9d0280a6a7399f7bb123046217979890fcab2e18d5f0f681b6cf4ad819ea116c`
schemaEndpointId	https://opencode.ai/docs/zen docs-derived Endpoints Source trace `8fd8a929f03ddc4add5a17fe1cf77e13414f16765e85773e8638658cac3c3421`
reasoning	https://models.dev/api.json 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/v1/chat/completions # request schema
$ curl -X POST https://modelschemas.com/v1/validate -d '{"provider":"opencode","endpointId":"v1/chat/completions","payload":{…}}'
$ curl -X POST https://modelschemas.com/v1/estimate -d '{"provider":"opencode","model":"nemotron-3-ultra-free","usage":{"input_tokens":1200,"output_tokens":400}}'