Claude 5.5 SonnetvsClaude Opus 5

Claude 5.5 Sonnet leads the overall Podium Score by 13.4 points (94.8 vs 81.4).Category wins: Claude 5.5 Sonnet 3 — 1 Claude Opus 5.Claude 5.5 Sonnet is the cheaper pick ($15/M vs $25/M per 1M output tokens). Claude 5.5 Sonnet is faster (94 t/s vs 60 t/s).

Open in Compare Tool →View Claude 5.5 SonnetView Claude Opus 5
Claude 5.5 SonnetDrag slider or hover to compareClaude Opus 5
Claude Opus 5
81.4
Coding: 70.4 · Speed: 60 t/s
Output Price: $25/M
Claude 5.5 Sonnet
94.8
Coding: 91.5 · Speed: 94 t/s
Output Price: $15/M
Quick VerdictAggregated 2026 Benchmark Analysis

Claude 5.5 Sonnet is rated higher overall with a Podium Score of 94.8 (vs 81.4 for Claude Opus 5). In head-to-head domain evaluations, Claude 5.5 Sonnet outperforms in 3 of 7 benchmark categories.

Coding & Engineering
Claude 5.5 Sonnet (91.5)
Inference Speed
Claude 5.5 Sonnet (94 t/s)
Cost Efficiency
Claude 5.5 Sonnet ($15/M)
API Price / 1M (in · out)
Claude 5.5 Sonnet $3/M · $15/M — Claude Opus 5 $5/M · $25/M

Choose Claude 5.5 Sonnet for complex reasoning and analysis, and Claude Opus 5 for long documents and large codebases.

MetricClaude 5.5 SonnetClaude Opus 5
Podium Score94.8 ▲81.4
Arena Elo1520 ▲1492
Intelligence Index95.0 ▲61.0
Coding91.5 ▲70.4
Math94.2—
Reasoning95.0 ▲82.3
Agentic89.4—
Knowledge88.0 ▲37.1
Multimodal96.0—
Long-context98.099.2 ▲
Output speed94 t/s ▲60 t/s
Output price$15/M ▲$25/M
Context window1000K1000K
Scores aggregated from five independent leaderboards. See Methodology. More head-to-heads: Claude 5.5 Sonnet vs Claude Mythos · Claude 5.5 Sonnet vs Kimi K3.1 Pro · Claude 5.5 Sonnet vs Eleven Multilingual v3 · Claude 5.5 Sonnet vs FLUX.2 Pro
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