Claude Opus 4.7 vs Claude Sonnet 5.5
As of Oct 15, 2026, Claude Opus 4.7 leads Claude Sonnet 5.5 in 4 of 8 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.7
Close. Near-SOTA in Reasoning, rank #4.
Claude Sonnet 5.5
Yes. SOTA in Coding (tied), Coding › Agentic (tied), and Vision (tied).
| Category | Claude Opus 4.7 | Claude Sonnet 5.5 |
|---|---|---|
| General LLM | #5 · Near-SOTA · General LLM Margin 2.659574468085111 LMArena leaderboard dataset · Oct 13, 2026 | #29 · #29 in General LLM Margin 15.425531914893611 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #4 · Near-SOTA · Reasoning Margin 2.659574468085111 LMArena leaderboard dataset · Oct 13, 2026 | #18 · #18 in Reasoning Margin 10.106382978723403 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #10 · #10 in Math Margin 20 Epoch AI benchmarking hub · Apr 16, 2026 | #4 · #4 in Math Margin 6.666666666666671 Epoch AI benchmarking hub · Sep 28, 2026 |
| Science | #34 · #34 in Science Margin — Epoch AI benchmarking hub · Apr 16, 2026 | #3 · #3 in Science Margin — Epoch AI benchmarking hub · Sep 28, 2026 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | — | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #34 · Was SOTA · Coding › Web dev Margin 26.400000000000006 LMArena leaderboard dataset · Oct 13, 2026 | #3 · Near-SOTA · Coding › Web dev Margin 1.5999999999999943 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #4 · Near-SOTA · Long context Margin 2.1276595744680833 LMArena leaderboard dataset · Oct 13, 2026 | #11 · #11 in Long context Margin 5.851063829787236 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #20 · Was SOTA · Vision Margin 55.26315789473684 Epoch AI benchmarking hub · Apr 16, 2026 | #1 · Co-SOTA · Vision Margin 0 Epoch AI benchmarking hub · Sep 28, 2026 |
| Factuality | #13 · #13 in Factuality Margin 8.139534883720927 LMArena leaderboard dataset · Oct 13, 2026 | #17 · #17 in Factuality Margin 10.465116279069761 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #11 · #11 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 16, 2026 | — |
Claude Opus 4.7: $10 per 1M blended tokens.
Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.
Claude Opus 4.7: closed weights.
Claude Sonnet 5.5: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 4.7 leads Claude Sonnet 5.5 in General LLM at #5 against #29.
Reasoning: As of Oct 15, 2026, Claude Opus 4.7 leads Claude Sonnet 5.5 in Reasoning at #4 against #18.
Math: As of Oct 15, 2026, Claude Sonnet 5.5 leads Claude Opus 4.7 in Math at #4 against #10.
Science: As of Oct 15, 2026, Claude Sonnet 5.5 leads Claude Opus 4.7 in Science at #3 against #34.
Coding › Web dev: As of Oct 15, 2026, Claude Sonnet 5.5 leads Claude Opus 4.7 in Coding › Web dev at #3 against #34.
Long context: As of Oct 15, 2026, Claude Opus 4.7 leads Claude Sonnet 5.5 in Long context at #4 against #11.
Vision: As of Oct 15, 2026, Claude Sonnet 5.5 leads Claude Opus 4.7 in Vision at #1 against #20.
Factuality: As of Oct 15, 2026, Claude Opus 4.7 leads Claude Sonnet 5.5 in Factuality at #13 against #17.
Claude Opus 4.7 · Claude Sonnet 5.5
Claude Opus 4.7 or Claude Sonnet 5.5?
As of Oct 15, 2026, Claude Opus 4.7 leads Claude Sonnet 5.5 in 4 of 8 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.7 or Claude Sonnet 5.5 for General LLM?
As of Oct 15, 2026, Claude Opus 4.7 leads Claude Sonnet 5.5 in General LLM at #5 against #29.
Claude Opus 4.7 or Claude Sonnet 5.5 for Reasoning?
As of Oct 15, 2026, Claude Opus 4.7 leads Claude Sonnet 5.5 in Reasoning at #4 against #18.
Claude Opus 4.7 or Claude Sonnet 5.5 for Math?
As of Oct 15, 2026, Claude Sonnet 5.5 leads Claude Opus 4.7 in Math at #4 against #10.