Claude Fable 5.1 vs Deepseek v4 Flash Vision
Claude Fable 5.1 
Deepseek v4 Flash Vision Verdict
- Claude Fable 5.1 (high) leads on quality: 72.0 vs 59.8.
- Claude Fable 5.1 (high) is stronger in coding, composite, knowledge, long context, reasoning.
- Deepseek v4 Flash Vision (max) is stronger in agents & tools, multimodal.
- Deepseek v4 Flash Vision (max) is 76× cheaper ($0.262 vs $20.00 per 1M blended).
- Deepseek v4 Flash Vision (max) streams 3.9× faster (215 vs 55 tokens per second).
| Metric | Claude Fable 5.1 (high) | Deepseek v4 Flash Vision (max) |
|---|---|---|
| BenchLeader Index | 72.0 | 59.8 |
| Agents & tools score | 66.6 | 69.9 |
| Coding score | 74.1 | – |
| Composite score | 94.0 | 73.4 |
| Knowledge score | 83.7 | 55.8 |
| Long context score | 68.4 | 67.1 |
| Reasoning score | 81.0 | 62.9 |
| Multimodal score | – | 59.2 |
| Blended price $/M | $20.00 | $0.262 |
| Output speed | 55 tok/s | 215 tok/s |
| Time to first answer | 14.7 s | 10.4 s |
| Context window | 1M | 1M |
| Terminal-Bench | 54.5% | – |
| SciCode | 57.6% | – |
| WeirdML | 92.3% | – |
| APEX-Agents | 44.4% | – |
| AA Intelligence Index | 51.2 | 35.0 |
| AA-LCR | 83.7% | 81.3% |
| MMMU-Pro | – | 74.8% |
| AA-Omniscience | 40.8 | -17.6 |
| GPQA Diamond (AA) | 90.6% | 91.3% |
| Humanity's Last Exam (AA) | 55.9% | 34.5% |
| SciCode (AA) | 58.7% | 49.6% |
| ARC-AGI-1 | 96.0% | – |
| ARC-AGI-2 | 88.8% | – |
| CritPt | 30.3% | 10.9% |
| GDPval (AA) | 57.5% | 53.9% |
| τ²-Bench Banking (AA) | 43.1% | 41.0% |
| MirrorCode | 73.3% | – |
| CursorBench | 69.4% | – |
| ALE-Bench | 2143.2 | – |
Data as of 2026-09-19. Best configuration of each model; every score links to its source on the model pages.
Claude Fable 5.1 vs Deepseek v4 Flash Vision: questions
- Is Claude Fable 5.1 better than Deepseek v4 Flash Vision?
- Claude Fable 5.1 (high) leads on quality: 72.0 vs 59.8. The BenchLeader Index combines every independent quality benchmark; Claude Fable 5.1 (high) is ahead overall as of 2026-09-19, but check the category scores for your use.
- Is Claude Fable 5.1 better than Deepseek v4 Flash Vision for agentic tasks?
- Deepseek v4 Flash Vision scores higher in agentic tasks (70 vs 67 on the category index, where 50 is average).
- Which is cheaper, Claude Fable 5.1 or Deepseek v4 Flash Vision?
- Deepseek v4 Flash Vision is cheaper: $0.262 against $20.00 per million tokens, blended at three input tokens per output token.
- Which is faster, Claude Fable 5.1 or Deepseek v4 Flash Vision?
- Deepseek v4 Flash Vision streams faster: 215 against 55 output tokens per second.
- Which has the larger context window?
- Both accept 1M tokens of context.