Claude Mythos PreviewvsGPT-6 Astra

Claude Mythos Preview leads the overall Podium Score by 11.2 points (97.4 vs 86.2).Category wins: Claude Mythos Preview 5 — 0 GPT-6 Astra.Claude Mythos Preview is the cheaper pick ($15/M vs $50/M per 1M output tokens). GPT-6 Astra is faster (82 t/s vs 80 t/s).

Open in Compare Tool →View Claude MythosView GPT-6 Astra
Claude Mythos PreviewDrag slider or hover to compareGPT-6 Astra
GPT-6 Astra
86.2
Coding: 67.2 · Speed: 82 t/s
Output Price: $50/M
Claude Mythos Preview
97.4
Coding: 80.9 · Speed: 80 t/s
Output Price: $15/M
Quick VerdictAggregated 2026 Benchmark Analysis

Claude Mythos Preview is rated higher overall with a Podium Score of 97.4 (vs 86.2 for GPT-6 Astra). In head-to-head domain evaluations, Claude Mythos Preview outperforms in 5 of 7 benchmark categories.

Coding & Engineering
Claude Mythos Preview (80.9)
Inference Speed
GPT-6 Astra (82 t/s)
Cost Efficiency
Claude Mythos Preview ($15/M)
API Price / 1M (in · out)
Claude Mythos $3/M · $15/M — GPT-6 Astra $10/M · $50/M

Choose Claude Mythos Preview for math and quantitative work, and GPT-6 Astra for low-latency applications.

MetricClaude Mythos PreviewGPT-6 Astra
Podium Score97.4 ▲86.2
Arena Elo—1498
Intelligence Index—61.0
Coding80.9 ▲67.2
Math100.0 ▲97.6
Reasoning98.8 ▲96.0
Agentic—72.6
Knowledge100.0 ▲31.5
Multimodal100.0 ▲98.2
Long-context—100.0
Output speed80 t/s82 t/s ▲
Output price$15/M ▲$50/M
Context window1000K1100K ▲
Scores aggregated from five independent leaderboards. See Methodology. More head-to-heads: Claude Mythos vs Claude 5.5 Sonnet · Claude Mythos vs Kimi K3.1 Pro · Claude Mythos vs Eleven Multilingual v3 · Claude Mythos vs FLUX.2 Pro
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