| Output $/MTok | $15.00 | $30.00 |
|---|---|---|
| Input $/MTok | $3.00 | $5.00 |
| Cached input $/MTok | $0.7500 | $0.5000 |
| Context window | 131,072 | 1,050,000 |
| Output cap | 131,072 | 128,000 |
| Modalities | in: text / out: text | in: text, image / out: text |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Family | Grok 3 | GPT-5.5 |
| Knowledge cutoff | 2024-11-30 | 2025-12-01 |
| Verified | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ |
| $/1M chars | $15.00 | $17.50 | $30.00 | $30.00 |
|---|---|---|---|---|
| Voice quality | neural | neural | neural | neural |
| Voice cloning | — | ✓ included | — | — |
| Voice count | — | 217 | 94 | — |
| Languages | en | en, hi, es, mr, kn, ta, bn, gu, te, ml, pa, or | en | en, es, de, fr, nl, it, ja |
| SSML support | — | — | — | — |
| TTFB | — | 200ms | 37ms | — |
| Output formats | — | pcm, mp3, wav, ulaw, alaw | — | wav, mp3, linear16, mulaw, alaw, opus |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ | provider page ↗ |