GET

/v1/models/opencode/claude-fable-5-1

provider opencodestatus activefirst seen Sep 1, 2026last seen 6m ago
rawIdclaude-fable-5-1
displayNameClaude Fable 5.1
idopencode-claude-fable-5-1
activitychat
schemaEndpointIdinference/anthropic/v1/messages
input · output
releasedAt1788220800 — Sep 1, 2026
firstSeenAt1788220800 — Sep 1, 2026
lastSeenAt1794560597 — 6m ago
pricing
$10 / 1M input · $50 / 1M output → open calculator
input_tokens (usage) · output_tokens (usage) · cache_read_tokens (usage) · cache_write_tokens (usage)
contextWindow1000000
maxOutput128000
modalities{"input":["text","image","pdf"],"output":["text"]}
capabilities{"tools":true,"reasoning":true,"vision":true}
knowledgeCutoff"2026-06"
openWeightsfalse
providerMetadata{"attachment":true,"canonical_model_id":"anthropic/claude-fable-5-1","cost":{"cache_read":0.25,"cache_write":12.5,"input":10,"output":50},"description":"Claude model for demanding reasoning and long-horizon agentic work","family":"claude-fable","id":"claude-fable-5-1","knowledge":"2026-06","last_updated":"2026-09-01","limit":{"context":1000000,"output":128000},"modalities":{"input":["text","image","pdf"],"output":["text"]},"name":"Claude Fable 5.1","open_weights":false,"provider":{"api":"https://opencode.ai/inference/anthropic/v1","npm":"@ai-sdk/anthropic"},"reasoning":true,"reasoning_options":[{"type":"effort","values":["low","medium","high","xhigh","max"]}],"release_date":"2026-09-01","temperature":false,"tool_call":true}
weightsUrl · requestMapnot published by this provider’s list endpoint

Endpoints & schemas

GET /v1/schemas/opencode →
endpointactivity
inference/anthropic/v1/messages
input · output
chat

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

Sources

fieldrecorded source
contextWindowhttps://models.dev/api.json

listing

opencode.models.claude-fable-5-1.limit.context

Source trace
cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff
maxOutputhttps://models.dev/api.json

listing

opencode.models.claude-fable-5-1.limit.output

Source trace
cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff
modalitieshttps://models.dev/api.json

listing

opencode.models.claude-fable-5-1.modalities

Source trace
cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff
pricingSource linked above.

docs-derived

Source trace
7c679ba1d370b4f455e84534094cfa25c1a6ce2b3c48479fdfbda654aaddda89
reasoninghttps://models.dev/api.json

listing

opencode.models.claude-fable-5-1.reasoning_options

Source trace
cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff
knowledgeCutoffhttps://models.dev/api.json

listing

opencode.models.claude-fable-5-1.knowledge

Source trace
cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff
openWeightshttps://models.dev/api.json

listing

opencode.models.claude-fable-5-1.open_weights

Source trace
cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff
schemaEndpointIdhttps://models.dev/api.json

listing

opencode.models.claude-fable-5-1.provider

Source trace
cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff
capabilities.toolshttps://models.dev/api.json

listing

opencode.models.claude-fable-5-1.tool_call

Source trace
cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff
capabilities.reasoninghttps://models.dev/api.json

listing

opencode.models.claude-fable-5-1.reasoning

Source trace
cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff
capabilities.visionhttps://models.dev/api.json

listing

opencode.models.claude-fable-5-1.modalities.input

Source trace
cc6d13d3f27b31b7ddfa28df1fcc4e98756f31f7429cd9a4e90a1158e0bbedff
requestMaphttps://opencode.ai/docs/zen

Value unknown (null); not published in the checked source · checked 2026-10-09.

requestMapFields.replayReasoningContenthttps://opencode.ai/docs/zen

Value unknown (null); not published in the checked source · checked 2026-10-09.

activitySource unknown — no source URL recorded.

Use it

shell
$ curl https://modelschemas.com/v1/schemas/opencode/chat/inference/anthropic/v1/messages # request schema
$ curl -X POST https://modelschemas.com/v1/validate -d '{"provider":"opencode","endpointId":"inference/anthropic/v1/messages","payload":{…}}'
$ curl -X POST https://modelschemas.com/v1/estimate -d '{"provider":"opencode","model":"claude-fable-5-1","usage":{"input_tokens":1200,"output_tokens":400}}'