| Output $/MTok | $4.40 | $10.00 | $60.00 | $1.25 |
|---|---|---|---|---|
| Input $/MTok | $1.10 | $1.25 | $15.00 | $0.20 |
| Cached input $/MTok | $0.2750 | $0.1250 | $7.5000 | $0.0200 |
| Context window | 200,000 | 400,000 | 200,000 | 400,000 |
| Output cap | 100,000 | 128,000 | 100,000 | 128,000 |
| Modalities | in: text, image / out: text | in: text, image / out: text | in: text, image / out: text | in: text, image / out: text |
| Tool use | ✓ | ✓ | ✓ | ✓ |
| Structured output | ✓ | ✓ | ✓ | ✓ |
| Family | o-series | GPT-5 | o-series | GPT-5.4 |
| Knowledge cutoff | 2024-06-01 | 2024-09-30 | 2023-10-01 | 2025-08-31 |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ | provider page ↗ |
| $/1M chars | — | $50.00 |
|---|---|---|
| Voice quality | neural | neural |
| Voice cloning | ✓ included | ✓ included |
| Voice count | — | — |
| Languages | en | 31+ |
| SSML support | — | — |
| TTFB | — | — |
| Output formats | — | — |
| Verified | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ |