Claude Opus 4.8 vs DeepSeek V3.1 Terminus
As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V3.1 Terminus in 3 of 3 shared categories: General LLM, Reasoning, and Long context.
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
DeepSeek V3.1 Terminus
#99 Best current rank: #99 in General LLM, as of Oct 14, 2026.
| Category | Claude Opus 4.8 | DeepSeek V3.1 Terminus |
|---|---|---|
| General LLM | #20 · #20 in General LLM Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 | #99 · #99 in General LLM Margin 67.34693877551021 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #10 · #10 in Reasoning Margin 7.534246575342465 LMArena leaderboard dataset · Oct 13, 2026 | #108 · #108 in Reasoning Margin 74.65753424657534 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | — |
| Science | #27 · #27 in Science Margin — Epoch AI benchmarking hub · May 28, 2026 | — |
| Coding | #12 · #12 in Coding Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #12 · #12 in Coding › Agentic Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #33 · Was SOTA · Coding › Web dev Margin 29.90654205607477 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #10 · Was SOTA · Long context Margin 6.802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #100 · #100 in Long context Margin 68.02721088435374 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #13 · #13 in Vision Margin 36.842105263157904 Epoch AI benchmarking hub · May 28, 2026 | — |
| Factuality | #21 · #21 in Factuality Margin 16.417910447761187 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Abstraction (ARC) | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 28, 2026 | — |
Claude Opus 4.8: $10 per 1M blended tokens.
DeepSeek V3.1 Terminus: $0.4525 per 1M blended tokens.
Claude Opus 4.8: closed weights.
DeepSeek V3.1 Terminus: open weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V3.1 Terminus in General LLM at #20 against #99.
Reasoning: As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V3.1 Terminus in Reasoning at #10 against #108.
Long context: As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V3.1 Terminus in Long context at #10 against #100.
Claude Opus 4.8 · DeepSeek V3.1 Terminus
Claude Opus 4.8 or DeepSeek V3.1 Terminus?
As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V3.1 Terminus in 3 of 3 shared categories: General LLM, Reasoning, and Long context.
Claude Opus 4.8 or DeepSeek V3.1 Terminus for General LLM?
As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V3.1 Terminus in General LLM at #20 against #99.
Claude Opus 4.8 or DeepSeek V3.1 Terminus for Reasoning?
As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V3.1 Terminus in Reasoning at #10 against #108.
Claude Opus 4.8 or DeepSeek V3.1 Terminus for Long context?
As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V3.1 Terminus in Long context at #10 against #100.