Claude 5.5 SonnetvsGPT-6 Astra (xhigh)

Claude 5.5 Sonnet leads the overall Podium Score by 7.8 points (94.8 vs 87.0).Category wins: Claude 5.5 Sonnet 4 — 0 GPT-6 Astra (xhigh).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 76 t/s).

Open in Compare Tool →View Claude 5.5 SonnetView GPT-6 Astra (xhigh)
Claude 5.5 SonnetDrag slider or hover to compareGPT-6 Astra (xhigh)
GPT-6 Astra (xhigh)
87.0
Coding: 60.0 · Speed: 76 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 87.0 for GPT-6 Astra (xhigh)). In head-to-head domain evaluations, Claude 5.5 Sonnet 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 (xhigh) $10/M · $50/M

Choose Claude 5.5 Sonnet for vision and multimodal apps, and GPT-6 Astra (xhigh) for general-purpose workloads.

MetricClaude 5.5 SonnetGPT-6 Astra (xhigh)
Podium Score94.8 ▲87.0
Arena Elo1520—
Intelligence Index95.0—
Coding91.5 ▲60.0
Math94.2—
Reasoning95.0 ▲90.0
Agentic89.4—
Knowledge88.0 ▲45.0
Multimodal96.0 ▲95.0
Long-context98.0—
Output speed94 t/s ▲76 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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