Kimi K3.1 ProvsGPT-6 Astra

Kimi K3.1 Pro leads the overall Podium Score by 8.0 points (94.2 vs 86.2).Category wins: Kimi K3.1 Pro 4 — 2 GPT-6 Astra.Kimi K3.1 Pro is the cheaper pick ($20/M vs $50/M per 1M output tokens). GPT-6 Astra is faster (82 t/s vs 45 t/s).

Open in Compare Tool →View Kimi K3.1 ProView GPT-6 Astra
Kimi K3.1 ProDrag slider or hover to compareGPT-6 Astra
GPT-6 Astra
86.2
Coding: 67.2 · Speed: 82 t/s
Output Price: $50/M
Kimi K3.1 Pro
94.2
Coding: 72.0 · Speed: 45 t/s
Output Price: $20/M
Quick VerdictAggregated 2026 Benchmark Analysis

Kimi K3.1 Pro is rated higher overall with a Podium Score of 94.2 (vs 86.2 for GPT-6 Astra). In head-to-head domain evaluations, Kimi K3.1 Pro outperforms in 4 of 7 benchmark categories.

Coding & Engineering
Kimi K3.1 Pro (72.0)
Inference Speed
GPT-6 Astra (82 t/s)
Cost Efficiency
Kimi K3.1 Pro ($20/M)
API Price / 1M (in · out)
Kimi K3.1 Pro $4/M · $20/M — GPT-6 Astra $10/M · $50/M

Choose Kimi K3.1 Pro for complex reasoning and analysis, and GPT-6 Astra for vision and multimodal apps.

MetricKimi K3.1 ProGPT-6 Astra
Podium Score94.2 ▲86.2
Arena Elo14901498 ▲
Intelligence Index68.0 ▲61.0
Coding72.0 ▲67.2
Math95.097.6 ▲
Reasoning98.0 ▲96.0
Agentic82.0 ▲72.6
Knowledge45.0 ▲31.5
Multimodal96.098.2 ▲
Long-context100.0100.0
Output speed45 t/s82 t/s ▲
Output price$20/M ▲$50/M
Context window1000K1100K ▲
Scores aggregated from five independent leaderboards. See Methodology. More head-to-heads: Kimi K3.1 Pro vs Claude Mythos · Kimi K3.1 Pro vs Claude 5.5 Sonnet · Kimi K3.1 Pro vs Eleven Multilingual v3 · Kimi K3.1 Pro vs FLUX.2 Pro
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