Claude Opus 5 vs GPT-4O Mini
As of Oct 15, 2026, Claude Opus 5 leads GPT-4O Mini in 1 of 2 shared categories: Science.
Claude Opus 5
Close. Near-SOTA in Factuality, rank #4.
GPT-4O Mini
#11 Best recorded rank: #11 in General LLM, as of Oct 15, 2026.
| Category | Claude Opus 5 | GPT-4O Mini |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 5.851063829787236 LMArena leaderboard dataset · Oct 13, 2026 | #11 · #11 in General LLM Margin — LMArena leaderboard dataset · Sep 15, 2024 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 5.319148936170208 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Jul 18, 2024 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | — |
| Science | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #161 · #161 in Science Margin — Epoch AI benchmarking hub · Jul 18, 2024 |
| Coding | #4 · #4 in Coding Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Sep 27, 2024 |
| Coding › Agentic | #4 · #4 in Coding › Agentic Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #6 · Near-SOTA · Coding › Web dev Margin 4 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #9 · Was SOTA · Long context Margin 4.7872340425531945 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Vision | #12 · #12 in Vision Margin 36.8421052631579 Epoch AI benchmarking hub · Jul 24, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #4 · Near-SOTA · Factuality Margin 2.9069767441860535 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Jul 18, 2024 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 | — |
Claude Opus 5: $10 per 1M blended tokens.
GPT-4O Mini: $0.26249999999999996 per 1M blended tokens.
Claude Opus 5: closed weights.
GPT-4O Mini: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 5 and GPT-4O Mini share #11 in General LLM.
Science: As of Oct 15, 2026, Claude Opus 5 leads GPT-4O Mini in Science at #12 against #161.
Claude Opus 5 or GPT-4O Mini?
As of Oct 15, 2026, Claude Opus 5 leads GPT-4O Mini in 1 of 2 shared categories: Science.
Claude Opus 5 or GPT-4O Mini for General LLM?
As of Oct 15, 2026, Claude Opus 5 and GPT-4O Mini share #11 in General LLM.
Claude Opus 5 or GPT-4O Mini for Science?
As of Oct 15, 2026, Claude Opus 5 leads GPT-4O Mini in Science at #12 against #161.