Claude Fable 5.1 vs DeepSeek V4 Flash
As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V4 Flash in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Fable 5.1
Yes. SOTA in co-SOTA in Factuality.
DeepSeek V4 Flash
Yes. Yes on General LLM (best per dollar); Reasoning (best per dollar). Not the overall leader.
| Category | Claude Fable 5.1 | DeepSeek V4 Flash |
|---|---|---|
| General LLM | #6 · Was SOTA · General LLM Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #75 · #75 in General LLM Margin 51.02040816326531 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #5 · Was SOTA · Reasoning Margin 4.109589041095887 LMArena leaderboard dataset · Oct 13, 2026 | #72 · #72 in Reasoning Margin 50 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #2 · Near-SOTA · Math Margin 2.2222222222222285 Epoch AI benchmarking hub · Sep 1, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding | #3 · Near-SOTA · Coding Margin 18.181818181818187 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #3 · Near-SOTA · Coding › Agentic Margin 18.181818181818187 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #5 · Near-SOTA · Coding › Web dev Margin 3.738317757009341 LMArena leaderboard dataset · Oct 13, 2026 | #30 · #30 in Coding › Web dev Margin 27.10280373831776 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #6 · Was SOTA · Long context Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #69 · #69 in Long context Margin 46.93877551020408 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #6 · #6 in Vision Margin 18.421052631578945 Epoch AI benchmarking hub · Sep 1, 2026 | — |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #66 · #66 in Factuality Margin 50 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 1, 2026 | — |
Claude Fable 5.1: $20 per 1M blended tokens.
DeepSeek V4 Flash: $0.11374999999999999 per 1M blended tokens.
Claude Fable 5.1: closed weights.
DeepSeek V4 Flash: open weights.
General LLM: As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V4 Flash in General LLM at #6 against #75.
Reasoning: As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V4 Flash in Reasoning at #5 against #72.
Coding › Web dev: As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V4 Flash in Coding › Web dev at #5 against #30.
Long context: As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V4 Flash in Long context at #6 against #69.
Factuality: As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V4 Flash in Factuality at #1 against #66.
Claude Fable 5.1 · DeepSeek V4 Flash
Claude Fable 5.1 or DeepSeek V4 Flash?
As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V4 Flash in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Fable 5.1 or DeepSeek V4 Flash for General LLM?
As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V4 Flash in General LLM at #6 against #75.
Claude Fable 5.1 or DeepSeek V4 Flash for Reasoning?
As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V4 Flash in Reasoning at #5 against #72.
Claude Fable 5.1 or DeepSeek V4 Flash for Coding › Web dev?
As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V4 Flash in Coding › Web dev at #5 against #30.