Claude Fable 5 vs Kimi K2.5
Head to head on 26 shared benchmarks, with price, context window, and release dates.
Benchmark scores
51evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Fable 5 Anthropic | 71.8% | 90.0% | 1933elo | 83 | 56.3% | 92.6% | 55.5% | 63.5% | 81.4% | 78.6% | 80.0% | 59.9% | 88.5% | 93.9% | 87.3% | 56.1% | 88.5% | 68.9% | 85.0% | 51.9% | 60.2% | 76.9% | 62.9% | 66.0% | 90.4% | 98.5% | - | 17.4% | 83.9% | 38.6% | 1340elo | 78.0% | 29.3% | - | 29.8% | 1932elo | 66.0% | - | - | - | 13.3% | - | - | 95.0% | - | - | - | 80.3% | 88.0% | - | 74.2% | 69.4% |
| Kimi K2.5 Moonshot AI | 68.3% | 39.0% | 1576elo | 74.9 | 35.8% | 78.9% | 13.2% | 43.7% | 72.5% | 77.9% | 61.4% | 57.4% | 77.7% | 84.9% | 76.0% | 39.3% | 76.4% | 66.5% | 63.3% | 49.9% | 39.6% | 74.2% | 18.9% | 26.3% | 17.5% | 81.3% | 96.1 | - | - | - | - | - | - | 27.9% | - | - | - | 95.4 | 78.5% | 10421 | - | 62.0% | 87.1 | - | 73 | 67.3% | 70.8% | - | - | 69.4 | - | 56.8% |
2 / 2 models
| Attribute | Claude Fable 5 Anthropic | Kimi K2.5 Moonshot AI |
|---|---|---|
| Description | Claude Fable 5 is Anthropic's most capable widely released model, built for the most demanding reasoning and long-horizon agentic work. Shares its base model with the invitation-only Claude Mythos 5. | Kimi K2.5 is an AI model from Kimi. |
| Family | Claude | Kimi |
| Params | - | - |
| Open weights | closed | closed |
| License | - | Modified MIT |
| Released | 9 Jun 2026 | 27 Jan 2026 |
| Context | 1,000,000 | 262,144 |
| Input $/1M | $10.00 | $0.60 |
| Output $/1M | $50.00 | $3.00 |
| Cache read $/1M | $1.000 | $0.100 |
| Cache write $/1M | $12.500 | - |
| Speed | 66 tok/s | 0 tok/s |
| Latency | 49.62 s | 0.00 s |
| Modalities | text, image, file | text, image |
| Providers | - | - |
| Publisher | Anthropic | Moonshot AI |
| Reported scores | Finance Agent (v2)56.3% IFBench63.5% (AA) Swebenchpro80.3% LiveBench - Math93.9% (LiveBench) LiveBench - Coding78.6% (LiveBench) | GPQA Diamond78.9% (AA) Humanity's Last Exam (HLE)13.2% (AA) IFBench43.7% (AA) SciCode39.6% (AA) τ²-bench (Tau²-bench)81.3% (AA) |
FAQ
- Is Claude Fable 5 or Kimi K2.5 better?
- Across the 26 benchmarks both models report on Sophon, Claude Fable 5 leads on 26 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Fable 5 and Kimi K2.5 compare on GPQA Diamond?
- Claude Fable 5 scores 92.6% and Kimi K2.5 scores 78.9% on GPQA Diamond.
- Which is cheaper, Claude Fable 5 or Kimi K2.5?
- Kimi K2.5 is cheaper at $3.00 per million output tokens against $50.00 for Claude Fable 5 - about 16.7x.
- When were Claude Fable 5 and Kimi K2.5 released?
- Claude Fable 5 was released 9 Jun 2026 by Anthropic. Kimi K2.5 was released 27 Jan 2026 by Moonshot AI.
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