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% | 87.0% | 1943elo | 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% | 61.4% | 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% | 69.2% |
| Kimi K2.5 Moonshot AI | 68.3% | 35.0% | 1579elo | 74.9 | 35.8% | 87.9% | 30.7% | 70.2% | 72.5% | 77.9% | 61.4% | 57.4% | 77.7% | 84.9% | 76.0% | 39.3% | 76.4% | 66.5% | 63.3% | 49.9% | 49.0% | 74.2% | 34.8% | 26.3% | 17.5% | 95.9% | 96.1 | - | - | - | - | - | - | 27.9% | - | - | - | 95.4 | 78.5% | 10421 | - | 62.0% | 87.1 | - | 73 | 67.3% | 70.8% | - | - | 69.4 | - | 59.8% |
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 | open |
| 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 | $2.75 |
| Cache read $/1M | $1.000 | $0.070 |
| Cache write $/1M | $12.500 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 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 Diamond87.9% (AA) Humanity's Last Exam (HLE)30.7% (AA) IFBench70.2% (AA) SciCode49.0% (AA) τ²-bench (Tau²-bench)95.9% (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 25 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 87.9% on GPQA Diamond.
- Which is cheaper, Claude Fable 5 or Kimi K2.5?
- Kimi K2.5 is cheaper at $2.75 per million output tokens against $50.00 for Claude Fable 5 - about 18.2x.
- 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.
Other head-to-heads
56Claude Fable 5 vs Claude Opus 4.840 shared evalsClaude Fable 5 vs GPT-5.539 shared evalsClaude Fable 5 vs Gemini 3.1 Pro Preview36 shared evalsClaude Opus 4.6 vs Kimi K2.531 shared evalsGemini 3.1 Pro Preview vs Kimi K2.530 shared evalsGPT-5.2 vs Kimi K2.529 shared evalsKimi K2.5 vs Qwen3.6 Plus29 shared evalsClaude Sonnet 4.5 vs Kimi K2.528 shared evalsGPT-5.5 vs Kimi K2.528 shared evalsClaude Opus 4.8 vs Kimi K2.528 shared evalsClaude Fable 5 vs Claude Sonnet 4.628 shared evalsClaude Fable 5 vs Claude Opus 4.728 shared evalsGPT-5.4 vs Kimi K2.528 shared evalsClaude Opus 4.7 vs Kimi K2.528 shared evalsClaude Sonnet 4.6 vs Kimi K2.527 shared evalsClaude Opus 4.5 vs Kimi K2.526 shared evalsClaude Fable 5 vs Claude Opus 4.626 shared evalsClaude Fable 5 vs GPT-5.426 shared evalsGLM 5.1 vs Kimi K2.526 shared evalsGPT-5 Mini vs Kimi K2.525 shared evalsClaude Fable 5 vs GLM 5.125 shared evalsClaude Fable 5 vs GPT-5.4 Mini25 shared evalsDeepSeek V3.2 vs Kimi K2.525 shared evalsGPT-5.4 Mini vs Kimi K2.525 shared evalsClaude Fable 5 vs Claude Sonnet 4.524 shared evalsClaude Fable 5 vs GPT-5.224 shared evalsClaude Fable 5 vs Qwen3.6 Plus24 shared evalsGrok 4.1 Fast vs Kimi K2.524 shared evalsClaude Fable 5 vs GPT-5 Mini23 shared evalsClaude Fable 5 vs Claude Opus 4.523 shared evalsClaude Fable 5 vs Grok 4.1 Fast23 shared evalsClaude 4 Sonnet vs Kimi K2.523 shared evalsGPT-5 Nano vs Kimi K2.522 shared evalsClaude 4 Sonnet vs Claude Fable 522 shared evalsClaude Fable 5 vs GPT-5 Nano21 shared evalsGemini 2.5 Pro vs Kimi K2.521 shared evalsClaude Fable 5 vs DeepSeek V3.220 shared evalsClaude Fable 5 vs GLM 4.720 shared evalsGLM 4.7 vs Kimi K2.520 shared evalsClaude Fable 5 vs Gemini 2.5 Pro19 shared evalsgpt-oss-120b vs Kimi K2.519 shared evalsGPT-5 vs Kimi K2.518 shared evalsClaude Fable 5 vs GPT-6 Astra18 shared evalsClaude Fable 5 vs gpt-oss-120b18 shared evalsClaude Fable 5 vs GPT-516 shared evalsGPT-4o vs Kimi K2.515 shared evalsClaude Fable 5 vs GPT-4o13 shared evalsGPT-6 Astra vs Kimi K2.513 shared evalsGPT-4.1 Mini vs Kimi K2.512 shared evalsClaude Fable 5 vs GPT-4o-mini12 shared evalsGPT-4.1 vs Kimi K2.512 shared evalsGPT-4o-mini vs Kimi K2.512 shared evalsGPT-4.1 Nano vs Kimi K2.512 shared evalsClaude Fable 5 vs GPT-4.1 Nano11 shared evalsClaude Fable 5 vs GPT-4.1 Mini10 shared evalsClaude Fable 5 vs GPT-4.110 shared evals
Comparing something else? Build your own side-by-side.