Claude Opus 5 vs GPT-5 Mini
As of Oct 15, 2026, Claude Opus 5 leads GPT-5 Mini in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
| Category | Claude Opus 5 | GPT-5 Mini |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 5.851063829787236 LMArena leaderboard dataset · Oct 13, 2026 | #165 · #165 in General LLM Margin 87.76595744680851 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 5.319148936170208 LMArena leaderboard dataset · Oct 13, 2026 | #169 · #169 in Reasoning Margin 90.42553191489361 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #21 · Was SOTA · Math Margin 44.44444444444444 Epoch AI benchmarking hub · Aug 7, 2025 |
| Science | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #81 · #81 in Science Margin — Epoch AI benchmarking hub · Aug 7, 2025 |
| Coding | #4 · #4 in Coding Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| 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 | #187 · #187 in Long context Margin 99.46808510638297 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 | #146 · #146 in Factuality Margin 85.46511627906978 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #41 · #41 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 7, 2025 |
Claude Opus 5: $10 per 1M blended tokens.
GPT-5 Mini: $0.6875 per 1M blended tokens.
Claude Opus 5: closed weights.
GPT-5 Mini: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 5 leads GPT-5 Mini in General LLM at #11 against #165.
Reasoning: As of Oct 15, 2026, Claude Opus 5 leads GPT-5 Mini in Reasoning at #9 against #169.
Science: As of Oct 15, 2026, Claude Opus 5 leads GPT-5 Mini in Science at #12 against #81.
Long context: As of Oct 15, 2026, Claude Opus 5 leads GPT-5 Mini in Long context at #9 against #187.
Factuality: As of Oct 15, 2026, Claude Opus 5 leads GPT-5 Mini in Factuality at #4 against #146.
Abstraction (ARC): As of Oct 15, 2026, Claude Opus 5 leads GPT-5 Mini in Abstraction (ARC) at #3 against #41.
Claude Opus 5 or GPT-5 Mini?
As of Oct 15, 2026, Claude Opus 5 leads GPT-5 Mini in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Opus 5 or GPT-5 Mini for General LLM?
As of Oct 15, 2026, Claude Opus 5 leads GPT-5 Mini in General LLM at #11 against #165.
Claude Opus 5 or GPT-5 Mini for Reasoning?
As of Oct 15, 2026, Claude Opus 5 leads GPT-5 Mini in Reasoning at #9 against #169.
Claude Opus 5 or GPT-5 Mini for Science?
As of Oct 15, 2026, Claude Opus 5 leads GPT-5 Mini in Science at #12 against #81.