Claude Opus 5 vs GPT-5.4 Nano
As of Oct 15, 2026, Claude Opus 5 leads GPT-5.4 Nano in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Opus 5
Close. Near-SOTA in Factuality, rank #4.
GPT-5.4 Nano
#43 Best recorded rank: #43 in Abstraction (ARC), as of Oct 15, 2026.
| Category | Claude Opus 5 | GPT-5.4 Nano |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 5.851063829787236 LMArena leaderboard dataset · Oct 13, 2026 | #149 · #149 in General LLM Margin 79.25531914893617 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 5.319148936170208 LMArena leaderboard dataset · Oct 13, 2026 | #143 · #143 in Reasoning Margin 76.59574468085106 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 | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #73 · #73 in Science Margin — Epoch AI benchmarking hub · Mar 17, 2026 |
| 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 | #157 · #157 in Long context Margin 83.51063829787233 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 | #126 · #126 in Factuality Margin 73.83720930232558 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #43 · #43 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Mar 17, 2026 |
Claude Opus 5: $10 per 1M blended tokens.
GPT-5.4 Nano: $0.4625 per 1M blended tokens.
Claude Opus 5: closed weights.
GPT-5.4 Nano: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 5 leads GPT-5.4 Nano in General LLM at #11 against #149.
Reasoning: As of Oct 15, 2026, Claude Opus 5 leads GPT-5.4 Nano in Reasoning at #9 against #143.
Science: As of Oct 15, 2026, Claude Opus 5 leads GPT-5.4 Nano in Science at #12 against #73.
Long context: As of Oct 15, 2026, Claude Opus 5 leads GPT-5.4 Nano in Long context at #9 against #157.
Factuality: As of Oct 15, 2026, Claude Opus 5 leads GPT-5.4 Nano in Factuality at #4 against #126.
Abstraction (ARC): As of Oct 15, 2026, Claude Opus 5 leads GPT-5.4 Nano in Abstraction (ARC) at #3 against #43.
Claude Opus 5 or GPT-5.4 Nano?
As of Oct 15, 2026, Claude Opus 5 leads GPT-5.4 Nano in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Opus 5 or GPT-5.4 Nano for General LLM?
As of Oct 15, 2026, Claude Opus 5 leads GPT-5.4 Nano in General LLM at #11 against #149.
Claude Opus 5 or GPT-5.4 Nano for Reasoning?
As of Oct 15, 2026, Claude Opus 5 leads GPT-5.4 Nano in Reasoning at #9 against #143.
Claude Opus 5 or GPT-5.4 Nano for Science?
As of Oct 15, 2026, Claude Opus 5 leads GPT-5.4 Nano in Science at #12 against #73.