GPT 5.6 Terra XhighvsClaude Sonnet 4 5 20250929
GPT 5.6 Terra Xhigh is tied with Claude Sonnet 4 5 20250929 on the Podium Score (73.0).Category wins: GPT 5.6 Terra Xhigh 0 — 0 Claude Sonnet 4 5 20250929.GPT 5.6 Terra Xhigh is the cheaper pick ($10/M vs $15/M per 1M output tokens). GPT 5.6 Terra Xhigh is faster (50 t/s vs 50 t/s).
| Metric | GPT 5.6 Terra Xhigh | Claude Sonnet 4 5 20250929 |
|---|---|---|
| Podium Score | 73.0 | 73.0 |
| Arena Elo | — | — |
| Intelligence Index | — | — |
| Coding | — | — |
| Math | — | — |
| Reasoning | — | — |
| Agentic | — | — |
| Knowledge | — | — |
| Multimodal | — | — |
| Long-context | — | — |
| Output speed | 50 t/s | 50 t/s |
| Output price | $10/M ▲ | $15/M |
| Context window | 128K | 128K |
Scores aggregated from five leaderboards on 2026-08-05. See Methodology. More head-to-heads: GPT 5.6 Terra Xhigh vs Claude Mythos Preview · GPT 5.6 Terra Xhigh vs Claude Fable 5 · GPT 5.6 Terra Xhigh vs Kimi K3 · GPT 5.6 Terra Xhigh vs Claude Opus 5