Claude Fable 5 vs DeepSeek-V3.1
Claude Fable 5 (Anthropic) and DeepSeek-V3.1 (DeepSeek) compared on benchmarks, pricing, context window, and use-case rankings.
- Claude Fable 5 leads on overall intelligence (ECI 161 vs 139).
- Claude Fable 5 ranks higher for coding (99th vs 15th percentile).
| Attribute | Claude Fable 5 | DeepSeek-V3.1 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 161 | 139 |
| Coding | 99 | 15 |
| Math | 95 | 3 |
| Reasoning & Knowledge | 96 | 17 |
| Agentic & Tools | 98 | 10 |
| Specifications | ||
| Developer | Anthropic | DeepSeek |
| Family | Claude | DeepSeek |
| Released | Jun 9, 2026 | Aug 21, 2025 |
| Parameters | — | — |
| Availability | API access | Open weights (unrestricted) |
| Context window | 1M | — |
| Price — $/M input | $10.00 | — |
| Price — $/M output | $50.00 | — |
| Inputs | text, image, file | — |
| Outputs | text | — |
| Benchmarks | ||
| AIME 2024/2025 | 100% | 50% |
| APEX | 45% | — |
| GPQA Diamond | 93% | 74% |
| Humanity's Last Exam | 53% | 6% |
| SciCode | 60% | 37% |
| SimpleBench | 82% | 40% |
| SimpleQA Verified | 68% | — |
| WebDev Arena | 1654 | — |
| WeirdML | 92% | 38% |
| τ²-bench | 99% | 35% |
| LiveCodeBench | — | 58% |
| MMLU-Pro | — | 83% |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Frequently asked questions
Is Claude Fable 5 better than DeepSeek-V3.1?
On Epoch AI's Capabilities Index, Claude Fable 5 scores higher (161) than DeepSeek-V3.1 (139). The right pick depends on your task — compare their coding, math, and reasoning scores in the table above.
Which is better for coding, Claude Fable 5 or DeepSeek-V3.1?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Claude Fable 5 ranks higher — 99th vs 15th percentile among the models tracked on Model Beat.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.