Compare models
Put up to 4 models beside each other — token prices, context windows, capabilities and provider, from the same catalogue the model pages read.
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| Attribute | Claude Sonnet 5.5claude-sonnet-5.5 | Nova-3nova-3 | GPT-6 Astragpt-6-astra | S1s1 |
|---|---|---|---|---|
| Pricing | ||||
| Input | $2.00 / 1M | $0 / 1M | $10.00 / 1M | $0 / 1M |
| Output | $10.00 / 1M | $0 / 1M | $50.00 / 1M | $0 / 1M |
| Cache Write (5m) | $2.50 / 1M | Not applicable | $10.00 / 1M | Not applicable |
| Cache Write (1h) | $4.00 / 1M | Not applicable | $10.00 / 1M | Not applicable |
| Cache Read | $0.20 / 1M | Not applicable | $10.00 / 1M | Not applicable |
| Web Search | $0 / 1M | $0 / 1M | $0 / 1M | $0 / 1M |
| Context | ||||
| Max context | 1M | N/A | 1M | N/A |
| Max output | N/A | N/A | N/A | N/A |
| Capabilities | ||||
| Vision | Yes | No | Yes | No |
| Function Calling | Yes | No | Yes | No |
| JSON Mode | Yes | No | Yes | No |
| Streaming | Yes | No | Yes | No |
| Catalogue | ||||
| Provider | Anthropic | Deepgram | OpenAI | Fish Audio |
| Category | chat | voice | chat | voice |
| Charge type | Pay As You Go | Pay As You Go | Pay As You Go | Pay As You Go |
| Released | — | 2026-07-15 | — | 2026-07-29 |
| Description | ||||
| Summary | Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, serving as a direct upgrade to Sonnet 5. It excels at feature development, bug fixing, and creating polished documents, presentations, and spreadsheets, while offering clearer writing and communication than its predecessor. | Deepgram Nova-3 speech-to-text. Billed per second of audio. | GPT-6 Astra is OpenAI's flagship model for demanding end-to-end professional work, designed for advanced analysis, software engineering, deep research, scientific tasks, and document creation. It is particularly strong in long-horizon agentic workflows, including tasks that require sustained reasoning, tool orchestration, and computer and browser use, making it well suited for complex autonomous workflows and production-grade knowledge work. | Fish Audio S1 text-to-speech. Billed per UTF-8 byte of input text. |