| Output $/MTok | $10.00 | $30.00 |
|---|---|---|
| Input $/MTok | $2.50 | $5.00 |
| Cached input $/MTok | $1.2500 | $0.5000 |
| Context window | 128,000 | 1,050,000 |
| Output cap | 16,384 | 128,000 |
| Modalities | in: text, image / out: text | in: text, image / out: text |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Family | GPT-4o | GPT-5.5 |
| Knowledge cutoff | 2023-10-01 | 2025-12-01 |
| Verified | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ |
| $/min | $0.003300 |
|---|---|
| $/min batch | — |
| Streaming | — |
| Realtime | — |
| Languages | en |
| Diarization | included |
| TTFW | — |
| Verified | 2026-07-19 |
| Source | provider page ↗ |
| $/1M chars | — | $50.00 | $17.50 |
|---|---|---|---|
| Voice quality | neural | neural | neural |
| Voice cloning | ✓ included | ✓ included | ✓ included |
| Voice count | — | — | 217 |
| Languages | en | en, fr, de, es, pt, zh, ja, hi, ko | en, hi, es, mr, kn, ta, bn, gu, te, ml, pa, or |
| SSML support | — | — | — |
| TTFB | — | 40ms | 200ms |
| Output formats | — | — | pcm, mp3, wav, ulaw, alaw |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ |