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| Model facts | AvailableView model ↗ | AvailableView model ↗ | Legacy · availableView model ↗ |
|---|---|---|---|
| Exact identifier | gpt-5.4-2026-03-05 | gpt-5.6-sol | claude-sonnet-4-6 |
| Provider | OpenAI | OpenAI | Anthropic |
| Access surface | OpenAI · Responses API | OpenAI · Responses API | Anthropic · Claude API |
| First availability | Mar 5, 2026 | Jul 9, 2026 | Feb 17, 2026 |
| Context window | 1.05M | 1.05M | 1M |
| Input modalities | Not verified | text, image | Not verified |
| Output modalities | Not verified | text | Not verified |
| Tool calling | Supported | Supported | Not verified |
| Structured output | Supported | Supported | Not verified |
| Training / knowledge cutoff | Not verified | Feb 16, 2026 | Not verified |
| Input / 1M tokens | $2.50 | $4.00 | $3.00 |
| Output / 1M tokens | $15.00 | $20.00 | $15.00 |