Claude 5.5 SonnetvsGPT-6 Astra

Claude 5.5 Sonnet leads the overall Podium Score by 8.6 points (94.8 vs 86.2).Category wins: Claude 5.5 Sonnet 3 — 4 GPT-6 Astra.Claude 5.5 Sonnet is the cheaper pick ($15/M vs $50/M per 1M output tokens). Claude 5.5 Sonnet is faster (94 t/s vs 82 t/s).

Open in Compare Tool →View Claude 5.5 SonnetView GPT-6 Astra
Claude 5.5 SonnetDrag slider or hover to compareGPT-6 Astra
GPT-6 Astra
86.2
Coding: 67.2 · Speed: 82 t/s
Output Price: $50/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 86.2 for GPT-6 Astra). In head-to-head domain evaluations, GPT-6 Astra outperforms in 4 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 — GPT-6 Astra $10/M · $50/M

Choose Claude 5.5 Sonnet for coding and software engineering, and GPT-6 Astra for long documents and large codebases.

MetricClaude 5.5 SonnetGPT-6 Astra
Podium Score94.8 ▲86.2
Arena Elo1520 ▲1498
Intelligence Index95.0 ▲61.0
Coding91.5 ▲67.2
Math94.297.6 ▲
Reasoning95.096.0 ▲
Agentic89.4 ▲72.6
Knowledge88.0 ▲31.5
Multimodal96.098.2 ▲
Long-context98.0100.0 ▲
Output speed94 t/s ▲82 t/s
Output price$15/M ▲$50/M
Context window1000K1100K ▲
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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