GPT-5.6 SolvsKimi K2.5 Instant
GPT-5.6 Sol leads the overall Podium Score by 8.8 points (80.8 vs 72.0).Category wins: GPT-5.6 Sol 0 — 0 Kimi K2.5 Instant.Kimi K2.5 Instant is the cheaper pick ($3/M vs $30/M per 1M output tokens). GPT-5.6 Sol is faster (72 t/s vs 50 t/s).
Key VerdictAggregated 2026 Benchmark Analysis
GPT-5.6 Sol is rated higher overall with a Podium Score of 80.8 (vs 72.0 for Kimi K2.5 Instant). Both models show closely matched capabilities across domain benchmarks.
Coding & Engineering
Comparable
Inference Speed
GPT-5.6 Sol (72 t/s)
Cost Efficiency
Kimi K2.5 Instant ($3/M/M)
| Metric | GPT-5.6 Sol | Kimi K2.5 Instant |
|---|---|---|
| Podium Score | 80.8 ▲ | 72.0 |
| Arena Elo | 1483 | — |
| Intelligence Index | 59.0 | — |
| Coding | 64.8 | — |
| Math | 70.7 | — |
| Reasoning | 87.6 | — |
| Agentic | 33.9 | — |
| Knowledge | 22.0 | — |
| Multimodal | 97.4 | — |
| Long-context | 100.0 | — |
| Output speed | 72 t/s ▲ | 50 t/s |
| Output price | $30/M | $3/M ▲ |
| Context window | 1100K ▲ | 128K |
Scores aggregated from five independent leaderboards. See Methodology. More head-to-heads: GPT-5.6 Sol vs Claude Mythos · GPT-5.6 Sol vs Claude Fable 5 · GPT-5.6 Sol vs Kimi K3 · GPT-5.6 Sol vs Claude Opus 5