Claude Opus 5.5 Benchmarks, Pricing & Rankings
Anthropic · 2026-09-22 · Closed · Current
Snapshot 2026-10-14 · updated weekly
Claude Opus 5.5 ranks #1 of 42 on the AMR leaderboard.
Claude Opus 5.5 benchmark scores
| GPQA Diamond | 95.8% | |
| MMLU-Pro | 91.2% | |
| SWE-Bench Verified | 81.4% | |
| AIME 2025 | 96.7% | |
| LiveCodeBench v6 | 84.2% | |
| Arena Elo | 1489 |
Claude Opus 5.5 price, speed & context
Input price
$8
per 1M tokens
Output price
$40
per 1M tokens
Speed
88
tok/s
Context
500K
tokens
About Claude Opus 5.5
Claude Opus 5.5 is the current #1 AI model on the AMR aggregate, leading SWE-Bench Verified coding agents and near-sweeping graduate-level reasoning while keeping Anthropic’s 500K context window.
Models around Claude Opus 5.5 in the rankings
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Claude Opus 5.5 FAQ
Where does Claude Opus 5.5 rank?
Claude Opus 5.5 ranks #1 of 42 tracked AI models on the AMR aggregate as of October 2026, with an aggregate score of 96.8. Its strongest dimension is AIME 2025 at 96.7%.
How much does Claude Opus 5.5 cost?
Claude Opus 5.5 costs $8 per million input tokens and $40 per million output tokens on the standard API. At a typical 1:3 input/output agent workload, that blends to roughly $32.00 per million tokens.
What is the Claude Opus 5.5 context window?
Claude Opus 5.5 supports a 500K token context window and generates at a median 88 output tokens per second. That context fits roughly 333 standard documents in a single prompt.
Is Claude Opus 5.5 open source?
No — Claude Opus 5.5 is a closed model available only through Anthropic’s official API and authorized cloud partners.