GPT-6 AstravsGPT-5.6 Sol
GPT-6 Astra leads the overall Podium Score by 5.4 points (86.2 vs 80.8).Category wins: GPT-6 Astra 6 — 0 GPT-5.6 Sol.GPT-5.6 Sol is the cheaper pick ($30/M vs $50/M per 1M output tokens). GPT-6 Astra is faster (82 t/s vs 72 t/s).
Key VerdictAggregated 2026 Benchmark Analysis
GPT-6 Astra is rated higher overall with a Podium Score of 86.2 (vs 80.8 for GPT-5.6 Sol). In head-to-head domain evaluations, GPT-6 Astra outperforms in 6 of 7 benchmark categories.
Coding & Engineering
GPT-6 Astra (67.2)
Inference Speed
GPT-6 Astra (82 t/s)
Cost Efficiency
GPT-5.6 Sol ($30/M/M)
| Metric | GPT-6 Astra | GPT-5.6 Sol |
|---|---|---|
| Podium Score | 86.2 ▲ | 80.8 |
| Arena Elo | 1498 ▲ | 1483 |
| Intelligence Index | 61.0 ▲ | 59.0 |
| Coding | 67.2 ▲ | 64.8 |
| Math | 97.6 ▲ | 70.7 |
| Reasoning | 96.0 ▲ | 87.6 |
| Agentic | 72.6 ▲ | 33.9 |
| Knowledge | 31.5 ▲ | 22.0 |
| Multimodal | 98.2 ▲ | 97.4 |
| Long-context | 100.0 | 100.0 |
| Output speed | 82 t/s ▲ | 72 t/s |
| Output price | $50/M | $30/M ▲ |
| Context window | 1100K | 1100K |
Scores aggregated from five independent leaderboards. See Methodology. More head-to-heads: GPT-6 Astra vs Claude Mythos · GPT-6 Astra vs Claude Fable 5 · GPT-6 Astra vs Claude Fable 5.1 · GPT-6 Astra vs Kimi K3