GET

/v1/models/cloudflare-workers-ai/cloudflare-workers-ai-cf-openai-gpt-oss-20b

Accept:

provider cloudflare-workers-aistatus activefirst seen Aug 5, 2025last seen 14m ago

rawId	@cf/openai/gpt-oss-20b
displayName	gpt-oss-20b
id	cloudflare-workers-ai-cf-openai-gpt-oss-20b
activity	chat
schemaEndpointId	accounts/{account_id}/ai/run/@cf/openai/gpt-oss-20b input · output
releasedAt	no release date reported by the provider
firstSeenAt	1754352000 — Aug 5, 2025
lastSeenAt	1794561398 — 14m ago
pricing	$0.2 / 1M input · $0.3 / 1M output → open calculator https://developers.cloudflare.com/workers-ai/models/ input_tokens (usage) · output_tokens (usage)
contextWindow	128000
modalities	{"input":["text"],"output":["text"]}
capabilities	{"tools":true,"reasoning":true}
requestMap	{"thinking":null,"maxTokensField":"max_tokens","developerRole":null,"replayReasoningContent":null,"store":null,"strictTools":null,"sessionAffinity":null,"cacheControl":null,"toolStream":null,"reasoningEffort":null}
maxOutput · knowledgeCutoff · openWeights · weightsUrl · providerMetadata	not published by this provider’s list endpoint

Endpoints & schemas

GET /v1/schemas/cloudflare-workers-ai →

endpoint	activity
accounts/{account_id}/ai/run/@cf/openai/gpt-oss-20b input · output	chat

endpoints matching this model — the provider has more, see /v1/schemas/cloudflare-workers-ai

Sources

field	recorded source
contextWindow	Source unknown — no source URL recorded. listing
modalities	https://raw.githubusercontent.com/cloudflare/cloudflare-docs/production/src/content/workers-ai-models/gpt-oss-20b.json listing properties.vision Source trace `5d482865ea9ff6280473f50140eac3b526b0537baeed7e4fd47b32caafc7d859`
pricing	Source unknown — no source URL recorded. listing
reasoning	https://raw.githubusercontent.com/cloudflare/cloudflare-docs/production/src/content/workers-ai-models/gpt-oss-20b.json listing properties.reasoning_effort Source trace `5d482865ea9ff6280473f50140eac3b526b0537baeed7e4fd47b32caafc7d859`
capabilities.tools	https://raw.githubusercontent.com/cloudflare/cloudflare-docs/production/src/content/workers-ai-models/gpt-oss-20b.json listing properties.function_calling Source trace `5d482865ea9ff6280473f50140eac3b526b0537baeed7e4fd47b32caafc7d859`
capabilities.reasoning	https://raw.githubusercontent.com/cloudflare/cloudflare-docs/production/src/content/workers-ai-models/gpt-oss-20b.json listing properties.reasoning Source trace `5d482865ea9ff6280473f50140eac3b526b0537baeed7e4fd47b32caafc7d859`
maxOutput	https://developers.cloudflare.com/workers-ai/platform/glossary/ Value unknown (null); not published in the checked source · checked 2026-10-22.
requestMapFields.replayReasoningContent	https://raw.githubusercontent.com/cloudflare/cloudflare-docs/production/src/content/workers-ai-models/gpt-oss-20b.json Value unknown (null); not published in the checked source · checked 2026-10-09.
activity	Source unknown — no source URL recorded.
requestMap	Source unknown — no source URL recorded.
schemaEndpointId	Source unknown — no source URL recorded.

Use it

shell

$ curl https://modelschemas.com/v1/schemas/cloudflare-workers-ai/chat/accounts/%7Baccount_id%7D/ai/run/%40cf/openai/gpt-oss-20b # request schema
$ curl -X POST https://modelschemas.com/v1/validate -d '{"provider":"cloudflare-workers-ai","endpointId":"accounts/{account_id}/ai/run/@cf/openai/gpt-oss-20b","payload":{…}}'
$ curl -X POST https://modelschemas.com/v1/estimate -d '{"provider":"cloudflare-workers-ai","model":"@cf/openai/gpt-oss-20b","usage":{"input_tokens":1200,"output_tokens":400}}'