GPT-5.6 Terra & Luna vs Grok 4.6
Specs, per-token pricing, and live benchmark scores — refreshed daily from our benchmark database.
Specs & pricing
| GPT-5.6 Terra & Luna | Grok 4.6 | |
|---|---|---|
| Company | OpenAI | xAI |
| Released | Jul 2026 | Aug 2026 |
| Context window | — | 500K |
| Input /1M tokens | $2 | $2 |
| Output /1M tokens | $12 | $6 |
| Open weights | No | No |
Benchmarks
No published benchmark scores yet for either model — scores appear here automatically once measured.
Scores come from published leaderboards and official model cards (sources listed on the benchmarks page) and refresh daily. Pricing via vendor pages and OpenRouter.