Claude Fable 5.1 vs DeepSeek V3.1 Terminus
As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Terminus in 3 of 3 shared categories: General LLM, Reasoning, and Long context.
Claude Fable 5.1
Yes. SOTA in co-SOTA in Factuality.
DeepSeek V3.1 Terminus
#99 Best current rank: #99 in General LLM, as of Oct 14, 2026.
| Category | Claude Fable 5.1 | DeepSeek V3.1 Terminus |
|---|---|---|
| General LLM | #6 · Was SOTA · General LLM Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #99 · #99 in General LLM Margin 67.34693877551021 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #5 · Was SOTA · Reasoning Margin 4.109589041095887 LMArena leaderboard dataset · Oct 13, 2026 | #108 · #108 in Reasoning Margin 74.65753424657534 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #2 · Near-SOTA · Math Margin 2.2222222222222285 Epoch AI benchmarking hub · Sep 1, 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 | — |
| Long context | #6 · Was SOTA · Long context Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #100 · #100 in Long context Margin 68.02721088435374 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 Terminus: $0.4525 per 1M blended tokens.
Claude Fable 5.1: closed weights.
DeepSeek V3.1 Terminus: open weights.
General LLM: As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Terminus in General LLM at #6 against #99.
Reasoning: As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Terminus in Reasoning at #5 against #108.
Long context: As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Terminus in Long context at #6 against #100.
Claude Fable 5.1 · DeepSeek V3.1 Terminus
Claude Fable 5.1 or DeepSeek V3.1 Terminus?
As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Terminus in 3 of 3 shared categories: General LLM, Reasoning, and Long context.
Claude Fable 5.1 or DeepSeek V3.1 Terminus for General LLM?
As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Terminus in General LLM at #6 against #99.
Claude Fable 5.1 or DeepSeek V3.1 Terminus for Reasoning?
As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Terminus in Reasoning at #5 against #108.
Claude Fable 5.1 or DeepSeek V3.1 Terminus for Long context?
As of Oct 14, 2026, Claude Fable 5.1 leads DeepSeek V3.1 Terminus in Long context at #6 against #100.