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Claude Fable 5 vs DeepSeek-V3.1-Terminus
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| Attribute | Claude Fable 5 | DeepSeek-V3.1-Terminus |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 162 | — |
| Coding | 99 | 45 |
| Math | 95 | 49 |
| Reasoning & Knowledge | 96 | 41 |
| Agentic & Tools | 98 | 13 |
| Specifications | ||
| Developer | Anthropic | DeepSeek |
| Family | Claude | DeepSeek |
| Released | Jun 9, 2026 | Sep 22, 2025 |
| Parameters | — | — |
| Availability | API access | Open weights (unrestricted) |
| Context window | 1M | 164K |
| Price — $/M input | $10.00 | $0.27 |
| Price — $/M output | $50.00 | $1.00 |
| Inputs | text, image, file | text |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 100% | 90% |
| APEX | 45% | — |
| GPQA Diamond | 93% | 79% |
| Humanity's Last Exam | 53% | 15% |
| SciCode | 60% | 41% |
| SimpleBench | 82% | — |
| SimpleQA Verified | 68% | — |
| WebDev Arena | 1654 | — |
| WeirdML | 92% | — |
| τ²-bench | 99% | 37% |
| LiveCodeBench | — | 80% |
| MMLU-Pro | — | 85% |
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.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.