Claude Opus 5 vs O4 Mini
As of Oct 14, 2026, Claude Opus 5 leads O4 Mini in 5 of 5 shared categories: General LLM, Reasoning, Science, Factuality, and Abstraction (ARC).
| Category | Claude Opus 5 | O4 Mini |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #125 · #125 in General LLM Margin 85.03401360544217 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 6.849315068493155 LMArena leaderboard dataset · Oct 13, 2026 | #129 · #129 in Reasoning Margin 89.04109589041096 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #23 · Was SOTA · Math Margin 48.888888888888886 Epoch AI benchmarking hub · Apr 16, 2025 |
| Science | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #70 · #70 in Science Margin — Epoch AI benchmarking hub · Apr 16, 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 · Was SOTA · Coding › Web dev Margin 4.672897196261687 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #9 · Was SOTA · Long context Margin 6.122448979591837 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Jul 7, 2025 |
| 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 3.731343283582092 LMArena leaderboard dataset · Oct 13, 2026 | #122 · #122 in Factuality Margin 91.7910447761194 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #39 · #39 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 16, 2025 |
Claude Opus 5: $10 per 1M blended tokens.
O4 Mini: $1.9250000000000003 per 1M blended tokens.
Claude Opus 5: closed weights.
O4 Mini: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 5 leads O4 Mini in General LLM at #11 against #125.
Reasoning: As of Oct 14, 2026, Claude Opus 5 leads O4 Mini in Reasoning at #9 against #129.
Science: As of Oct 14, 2026, Claude Opus 5 leads O4 Mini in Science at #12 against #70.
Factuality: As of Oct 14, 2026, Claude Opus 5 leads O4 Mini in Factuality at #4 against #122.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5 leads O4 Mini in Abstraction (ARC) at #3 against #39.
Claude Opus 5 or O4 Mini?
As of Oct 14, 2026, Claude Opus 5 leads O4 Mini in 5 of 5 shared categories: General LLM, Reasoning, Science, Factuality, and Abstraction (ARC).
Claude Opus 5 or O4 Mini for General LLM?
As of Oct 14, 2026, Claude Opus 5 leads O4 Mini in General LLM at #11 against #125.
Claude Opus 5 or O4 Mini for Reasoning?
As of Oct 14, 2026, Claude Opus 5 leads O4 Mini in Reasoning at #9 against #129.
Claude Opus 5 or O4 Mini for Science?
As of Oct 14, 2026, Claude Opus 5 leads O4 Mini in Science at #12 against #70.