| Output $/MTok | $15.00 | $6.00 | $1.00 |
|---|---|---|---|
| Input $/MTok | $2.50 | $2.00 | $1.00 |
| Cached input $/MTok | $0.2500 | $0.3000 | — |
| Context window | 1,050,000 | 500,000 | 128,000 |
| Output cap | 128,000 | 500,000 | 8,000 |
| Modalities | in: text, image / out: text | in: text, image / out: text | in: text / out: text |
| Tool use | ✓ | ✓ | — |
| Structured output | ✓ | ✓ | ✓ |
| Family | GPT-5.4 | Grok 4 | Sonar |
| Knowledge cutoff | 2025-08-31 | 2026-02-01 | — |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ |
| $/1M chars | $4.00 | $50.00 | $50.00 |
|---|---|---|---|
| Voice quality | neural | neural | neural |
| Voice cloning | — | ✓ included | ✓ included |
| Voice count | — | — | — |
| Languages | 40+ | en, fr, de, es, pt, zh, ja, hi, ko | 31+ |
| SSML support | ✓ | — | — |
| TTFB | — | 40ms | — |
| Output formats | — | — | — |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ |