Claude Fable 5.1 vs DeepSeek V3.1 Thinking
As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Thinking in 3 of 3 shared categories: General LLM, Reasoning, and Long context.
Claude Fable 5.1
Yes. SOTA in Factuality (tied).
DeepSeek V3.1 Thinking
#90 Best current rank: #90 in Long context, as of Oct 15, 2026.
| Category | Claude Fable 5.1 | DeepSeek V3.1 Thinking |
|---|---|---|
| General LLM | #6 · Near-SOTA · General LLM Margin 3.191489361702125 LMArena leaderboard dataset · Oct 13, 2026 | #127 · #127 in General LLM Margin 67.5531914893617 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #5 · Near-SOTA · Reasoning Margin 3.191489361702125 LMArena leaderboard dataset · Oct 13, 2026 | #124 · #124 in Reasoning Margin 66.48936170212767 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 3.200000000000003 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #6 · Near-SOTA · Long context Margin 3.1914893617021107 LMArena leaderboard dataset · Oct 13, 2026 | #90 · #90 in Long context Margin 47.872340425531924 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 | — |
| 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 V3.1 Thinking: price per 1M tokens is unset in the catalog.
Claude Fable 5.1: closed weights.
DeepSeek V3.1 Thinking: open weights.
General LLM: As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Thinking in General LLM at #6 against #127.
Reasoning: As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Thinking in Reasoning at #5 against #124.
Long context: As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Thinking in Long context at #6 against #90.
Claude Fable 5.1 · DeepSeek V3.1 Thinking
Claude Fable 5.1 or DeepSeek V3.1 Thinking?
As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Thinking in 3 of 3 shared categories: General LLM, Reasoning, and Long context.
Claude Fable 5.1 or DeepSeek V3.1 Thinking for General LLM?
As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Thinking in General LLM at #6 against #127.
Claude Fable 5.1 or DeepSeek V3.1 Thinking for Reasoning?
As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Thinking in Reasoning at #5 against #124.
Claude Fable 5.1 or DeepSeek V3.1 Thinking for Long context?
As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Thinking in Long context at #6 against #90.