Terminal-Bench 4.0
claude-code2.1.231
Reasoning effort max
Tested model identity
Fable 5anthropic/claude-fable-5Pass rate44.55%
95% CI 40.7%–48.4%
n = 330Checked
anthropicListed Jun 9, 2026
claude-fable-5
Claude Fable 5 is Anthropic's next generation of intelligence for the hardest knowledge work and coding problems. It works independently for longer than any prior generally available Claude model: run it in…
Source description
Claude Fable 5 is Anthropic's next generation of intelligence for the hardest knowledge work and coding problems. It works independently for longer than any prior generally available Claude model: run it in an agent harness and it can work for days at a time, planning across stages, delegating to sub-agents, and checking its own work.
Context window1M
Max output128K
Provider endpoints9
Benchmark results0
Agent runs1
Measured performance
All leaderboards ↗Benchmark results
No published results in this index yet
Scores appear here when an evaluation matches this exact model.
Model + harness
All agent results ↗Agent runs
claude-code
Access & cost
9 quotesPrices across providers
Your token mix
USD · listed token ratesOpenRouter
Catalog quote- Input
- $10.00
- Output
- $50.00
- Cached input
- $1.00
- Input
- $10.00
- Output
- $50.00
Experiential
Standard list rate
- Input
- $10.00
- Output
- $50.00
- Cached input
- $1.00
Catalog list rate. Plan allowances and temporary discounts are separate.
- Input
- $10.00
- Output
- $50.00
- Cached input
- $1.00
Cache write $12.5/M tokens · 1h cache write $20/M tokens · Web search $0.01/search
- Input
- $10.00
- Output
- $50.00
- Cached input
- $1.00
Cache write $12.5/M tokens · 1h cache write $20/M tokens · Web search $0.01/search
- Input
- $10.00
- Output
- $50.00
- Cached input
- $1.00
Cache write $12.5/M tokens · 1h cache write $20/M tokens · Web search $0.01/search
- Input
- $10.00
- Output
- $50.00
- Cached input
- $1.00
Cache write $12.5/M tokens · 1h cache write $20/M tokens · Web search $0.01/search
- Input
- $10.00
- Output
- $50.00
- Cached input
- $1.00
Cache write $12.5/M tokens · 1h cache write $20/M tokens · Web search $0.01/search
- Input
- $11.00
- Output
- $55.00
- Cached input
- $1.10
Cache write $13.75/M tokens · 1h cache write $22/M tokens · Web search $0.01/search
Offers for this model
1 offerExperiential Labs · Discount
2.5% off · Experiential Pro model discounts
Paid Pro plan required, covering the first 2,000 credits of usage each month, then list price.
Checked Source ↗
Model specifications
- Developer
- anthropic
- Modality
- Language
- Context
- 1,000,000 tokens
- Maximum output
- 128,000 tokens
- Weights
- Not reported
- Provider listed
- Jun 9, 2026
- First discovered
- Oct 16, 2026
Exact identities
- openrouter
anthropic/claude-fable-5 - deepinfra
anthropic/claude-fable-5 - experiential
claude-fable-5
Sources
Updated Oct 17, 2026
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