none reviewed yet · 2 benchmark observations · latest capture Sep 8, 2026
Inspect the evidenceAnthropic · MODEL PROFILE
Claude Fable 5
Teams pinned to Fable 5 snapshots for reproducibility until they migrate to 5.1
Saved editorial fit for your current task lens; not a benchmark result
How scoring worksVerified rates (Sep 8, 2026) · 100 runs / month at your token settings
Adjust workloadAt a glance
9 facts- Provider
- Anthropic
- Type
- API model
- Access
- Anthropic API, AWS Bedrock, Claude Code
- Context
- 1,000,000 tokens
- Maximum output
- 128K tokens
- License / weights
- Proprietary
- Input modalities
- text, image, file
- Output modalities
- text
- Pricing notes
- $10 in / $50 out per 1M; cache read $1.00 (4x Fable 5.1's $0.25), cache write $12.50
The practical trade-offs
Documented strengths
- SWE-bench Pro 80.0% and Verified 95% keep it in the top handful for code correctness
- FrontierSWE 88.2 is the best value in Z.ai's cross-vendor table
- Very well-sampled Arena row (8,017 votes, +/-8) and Design Arena rank 9
- 1M multimodal context with 128K output
Limitations to check
- Same $10/$50 price as Fable 5.1 but 4x more expensive cache reads and lower scores
- Now labelled Legacy on Anthropic's pricing page
- Terminal-Bench 4.0 44.5% trails Fable 5.1's 55.8%
- TTFT 108.60 s
Follow the source
7 source linksEvidence & conditions
7Source links
NoneReviewed records
2Benchmark runs
Sep 8, 2026Latest capture
- Evidence source 1
docs.aws.amazon.comDate not recorded - Evidence source 2
anthropic.comDate not recorded - Evidence source 3
anthropic.comDate not recorded - Evidence source 4
arena.aiDate not recorded - Evidence source 5
benchlm.aiDate not recorded - Evidence source 6
benchlm.aiDate not recorded - Evidence source 7
artificialanalysis.aiDate not recorded
Benchmark observations
Terminal-Bench 4.0 Inspect conditions
- name
- Terminal-Bench 4.0
- value
- 44.5
- unit
- %
- source Url
- https://openai.com/index/gpt-6-astra/
- checked At
- 2026-09-08T19:30:56Z
- attribution
- provider-reported
- configuration
- OpenAI comparative table, not an independent Anthropic verification; maximum across effort; competitor harness not specified.
DeepSWE v1.1 Inspect conditions
- name
- DeepSWE v1.1
- value
- 69.9
- unit
- %
- source Url
- https://openai.com/index/gpt-6-astra/
- checked At
- 2026-09-08T19:30:56Z
- attribution
- provider-reported
- configuration
- OpenAI comparative table, not an independent Anthropic verification; maximum across effort; competitor harness not specified.
Source reports, measured results, and editorial assessments are separate evidence types. Source dates do not imply a new benchmark run. Capture dates are shown when recorded; otherwise we say the capture date was not recorded. Recorded dates are compared with this catalogue snapshot (Sep 11, 2026), not today’s date.
Method AIS-V2
How this page is assessed
Quality claims follow Method AIS-V2.
Money never buys rank — commercial relationships cannot change rank, eligibility, evidence quality, or publication timing.
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