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Agentic Chat (Claude Fable 5.1)

anthropic·anthropic/duo-chat-fable-5-1·GA·Closed·claude-fable series·NEW
Claude model for demanding reasoning and long-horizon agentic work

Specs & pricing

Input / output per 1M tokens
Reference price·GitLab Duo
$0 / $0
Blended $0 · Cache read $0
Lowest paid
No paid channels
1 more $0 channels
Context
1,000,000
Output limit
128,000
Knowledge cutoff
2026-06
Released / updated
2026-09-01 / 2026-09-01
Capabilities
✓ Reasoning✓ Tool use? Structured outputTemperature✓ Attachments
Modalities
TextImagePDF

Available at 1 providers0 with public prices · 1 free

ProviderTierInputOutputCache readCache writeContextOutput limitStatus
GitLab DuoCloudFree$0$01,000,000128,000

Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.

Your usage cost

This model is $0 across all listed channels (GitLab Duo).

Reasoning control

effort = loweffort = mediumeffort = higheffort = xhigheffort = max

Related models

Claude Fable 5.1same series$10.00 / $50.00Anthropic Claude Fable 5.1same series$10.00 / $50.00Claude Fable 5.1 (EU)same series$11.00 / $55.00

Price historyone sample accumulated per data sync

Input list $0Output list $0Min blended —

Price history accumulates from each data sync; currently only 1 sample(s) (2026-09-03). Each future sync adds a point, and once accumulated a line is drawn here.

Data partly from models.dev (MIT) · GitLab Duo official docs ↗