| Output $/MTok | $15.00 | $1.00 | $8.00 |
|---|---|---|---|
| Input $/MTok | $2.50 | $1.00 | $2.00 |
| Cached input $/MTok | $0.2500 | — | $0.5000 |
| Context window | 1,050,000 | 128,000 | 1,047,576 |
| Output cap | 128,000 | 8,000 | 32,768 |
| Modalities | in: text, image / out: text | in: text / out: text | in: text, image / out: text |
| Tool use | ✓ | — | ✓ |
| Structured output | ✓ | ✓ | ✓ |
| Family | GPT-5.4 | Sonar | GPT-4.1 |
| Knowledge cutoff | 2025-08-31 | — | 2024-06-01 |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ |
| $/1M chars | $4.00 | — | $30.00 |
|---|---|---|---|
| Voice quality | neural | neural | neural |
| Voice cloning | — | ✓ included | — |
| Voice count | — | — | 94 |
| Languages | 40+ | en | en |
| SSML support | ✓ | — | — |
| TTFB | — | — | 37ms |
| Output formats | — | — | — |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ |