Claude Opus 4.8 vs DeepSeek V4 Flash
As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V4 Flash in 4 of 5 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
DeepSeek V4 Flash
Yes. Yes on General LLM (best per dollar); Reasoning (best per dollar). Not the overall leader.
| Category | Claude Opus 4.8 | DeepSeek V4 Flash |
|---|---|---|
| General LLM | #20 · #20 in General LLM Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 | #75 · #75 in General LLM Margin 51.02040816326531 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #10 · #10 in Reasoning Margin 7.534246575342465 LMArena leaderboard dataset · Oct 13, 2026 | #72 · #72 in Reasoning Margin 50 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · 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 | #30 · #30 in Coding › Web dev Margin 27.10280373831776 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #10 · Was SOTA · Long context Margin 6.802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #69 · #69 in Long context Margin 46.93877551020408 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 | #66 · #66 in Factuality Margin 50 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 V4 Flash: $0.11374999999999999 per 1M blended tokens.
Claude Opus 4.8: closed weights.
DeepSeek V4 Flash: open weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V4 Flash in General LLM at #20 against #75.
Reasoning: As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V4 Flash in Reasoning at #10 against #72.
Coding › Web dev: As of Oct 14, 2026, DeepSeek V4 Flash leads Claude Opus 4.8 in Coding › Web dev at #30 against #33.
Long context: As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V4 Flash in Long context at #10 against #69.
Factuality: As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V4 Flash in Factuality at #21 against #66.
Claude Opus 4.8 · DeepSeek V4 Flash
Claude Opus 4.8 or DeepSeek V4 Flash?
As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V4 Flash in 4 of 5 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.8 or DeepSeek V4 Flash for General LLM?
As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V4 Flash in General LLM at #20 against #75.
Claude Opus 4.8 or DeepSeek V4 Flash for Reasoning?
As of Oct 14, 2026, Claude Opus 4.8 leads DeepSeek V4 Flash in Reasoning at #10 against #72.
Claude Opus 4.8 or DeepSeek V4 Flash for Coding › Web dev?
As of Oct 14, 2026, DeepSeek V4 Flash leads Claude Opus 4.8 in Coding › Web dev at #30 against #33.