| Output $/MTok | $6.00 | $0.40 | $15.00 |
|---|---|---|---|
| Input $/MTok | $2.00 | $0.05 | $2.50 |
| Cached input $/MTok | $0.3000 | $0.0050 | $0.2500 |
| Context window | 500,000 | 400,000 | 1,050,000 |
| Output cap | 500,000 | 128,000 | 128,000 |
| Modalities | in: text, image / out: text | in: text, image / out: text | in: text, image / out: text |
| Tool use | ✓ | ✓ | ✓ |
| Structured output | ✓ | ✓ | ✓ |
| Family | Grok 4 | GPT-5 | GPT-5.4 |
| Knowledge cutoff | 2026-02-01 | 2024-05-31 | 2025-08-31 |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ |
| $/1M chars | $17.50 | $50.00 | $30.00 |
|---|---|---|---|
| Voice quality | neural | neural | neural |
| Voice cloning | ✓ included | ✓ included | — |
| Voice count | 217 | — | 94 |
| Languages | en, hi, es, mr, kn, ta, bn, gu, te, ml, pa, or | 31+ | en |
| SSML support | — | — | — |
| TTFB | 200ms | — | 37ms |
| Output formats | pcm, mp3, wav, ulaw, alaw | — | — |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ |