| Output $/MTok | $14.00 | $10.00 | $8.00 | $6.00 |
|---|---|---|---|---|
| Input $/MTok | $1.75 | $1.25 | $2.00 | $2.00 |
| Cached input $/MTok | $0.1750 | $0.1250 | $0.5000 | $0.3000 |
| Context window | 400,000 | 400,000 | 200,000 | 500,000 |
| Output cap | 128,000 | 128,000 | 100,000 | 500,000 |
| Modalities | in: text, image / out: text | in: text, image / out: text | in: text, image / out: text | in: text, image / out: text |
| Tool use | ✓ | ✓ | ✓ | ✓ |
| Structured output | ✓ | ✓ | ✓ | ✓ |
| Family | Codex | GPT-5 | o-series | Grok 4 |
| Knowledge cutoff | 2025-08-31 | 2024-09-30 | 2024-06-01 | 2026-02-01 |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ | provider page ↗ |
| $/1M chars | $30.00 | $15.00 |
|---|---|---|
| Voice quality | neural | neural |
| Voice cloning | — | — |
| Voice count | 94 | — |
| Languages | en | en |
| SSML support | — | — |
| TTFB | 37ms | — |
| Output formats | — | — |
| Verified | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ |