Claude Fable 5 vs Deepseek v4 Flash Vision
Claude Fable 5 
Deepseek v4 Flash Vision Verdict
- Claude Fable 5 (thinking) leads on quality: 70.9 vs 59.8.
- Claude Fable 5 (thinking) is stronger in agents & tools, composite, instruction following, knowledge, long context, reasoning.
- Deepseek v4 Flash Vision (max) is stronger in multimodal.
- Deepseek v4 Flash Vision (max) is 76× cheaper ($0.262 vs $20.00 per 1M blended).
- Deepseek v4 Flash Vision (max) streams 3.7× faster (215 vs 57 tokens per second).
| Metric | Claude Fable 5 (thinking) | Deepseek v4 Flash Vision (max) |
|---|---|---|
| BenchLeader Index | 70.9 | 59.8 |
| Agents & tools score | 74.1 | 69.9 |
| Composite score | 92.1 | 73.4 |
| Instruction following score | 63.0 | – |
| Knowledge score | 84.9 | 55.8 |
| Long context score | 67.7 | 67.1 |
| Reasoning score | 90.8 | 62.9 |
| Multimodal score | – | 59.2 |
| Blended price $/M | $20.00 | $0.262 |
| Output speed | 57 tok/s | 215 tok/s |
| Time to first answer | 108.4 s | 10.4 s |
| Context window | 1M | 1M |
| AA Intelligence Index | 49.7 | 35.0 |
| IFBench | 63.5% | – |
| AA-LCR | 82.3% | 81.3% |
| MMMU-Pro | – | 74.8% |
| AA-Omniscience | 43.3 | -17.6 |
| Terminal-Bench Hard | 62.9% | – |
| GPQA Diamond (AA) | 92.6% | 91.3% |
| Humanity's Last Exam (AA) | 55.5% | 34.5% |
| SciCode (AA) | 61.0% | 49.6% |
| τ²-Bench Telecom (AA) | 98.5% | – |
| Kagi LLM Benchmark | 91.4% | – |
| CritPt | 28.6% | 10.9% |
| GDPval (AA) | 56.6% | 53.9% |
| τ²-Bench Banking (AA) | 38.1% | 41.0% |
| Analyst Agent (AA) | 48.8% | – |
Data as of 2026-09-19. Best configuration of each model; every score links to its source on the model pages.
Claude Fable 5 vs Deepseek v4 Flash Vision: questions
- Is Claude Fable 5 better than Deepseek v4 Flash Vision?
- Claude Fable 5 (thinking) leads on quality: 70.9 vs 59.8. The BenchLeader Index combines every independent quality benchmark; Claude Fable 5 (thinking) is ahead overall as of 2026-09-19, but check the category scores for your use.
- Is Claude Fable 5 better than Deepseek v4 Flash Vision for agentic tasks?
- Claude Fable 5 scores higher in agentic tasks (74 vs 70 on the category index, where 50 is average).
- Which is cheaper, Claude Fable 5 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 or Deepseek v4 Flash Vision?
- Deepseek v4 Flash Vision streams faster: 215 against 57 output tokens per second.
- Which has the larger context window?
- Both accept 1M tokens of context.