| Output $/MTok | $2.50 | $10.00 | $60.00 |
|---|---|---|---|
| Input $/MTok | $1.25 | $2.50 | $15.00 |
| Cached input $/MTok | $0.2000 | $1.2500 | $7.5000 |
| Context window | 1,000,000 | 128,000 | 200,000 |
| Output cap | 1,000,000 | 16,384 | 100,000 |
| Modalities | in: text, image / out: text | in: text, image / out: text | in: text, image / out: text |
| Tool use | ✓ | ✓ | ✓ |
| Structured output | ✓ | ✓ | ✓ |
| Family | Grok 4 | GPT-4o | o-series |
| Knowledge cutoff | — | 2023-10-01 | 2023-10-01 |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ |
| $/1M chars | — | $30.00 | $160.00 |
|---|---|---|---|
| Voice quality | neural | neural | neural |
| Voice cloning | ✓ included | — | — |
| Voice count | — | 94 | — |
| Languages | en | en | 40+ |
| SSML support | — | — | ✓ |
| TTFB | — | 37ms | — |
| Output formats | — | — | — |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ |