Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...
Model details →Anthropic: Claude Sonnet 5 vs OpenAI: GPT-4o (2024-11-20)
Anthropic: Claude Sonnet 5 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
The 2024-11-20 version of GPT-4o offers a leveled-up creative writing ability with more natural, engaging, and tailored writing to improve relevance & readability. It’s also better at working with uploaded...
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Sonnet 5 | OpenAI: GPT-4o (2024-11-20) | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1M | 128K | 🏆 Anthropic: Claude Sonnet 5 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $2.00 | $2.50 | 🏆 Anthropic: Claude Sonnet 5 |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $10.00 | $10.00 | Tie |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | — | 🏆 Anthropic: Claude Sonnet 5 |
Frequently asked questions
Is Anthropic: Claude Sonnet 5 better than OpenAI: GPT-4o (2024-11-20)?
Anthropic: Claude Sonnet 5 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Anthropic: Claude Sonnet 5 and OpenAI: GPT-4o (2024-11-20)?
Input: $2.00 vs $2.50 per 1M tokens. Output: $10.00 vs $10.00 per 1M tokens.
What context windows do Anthropic: Claude Sonnet 5 and OpenAI: GPT-4o (2024-11-20) support?
Anthropic: Claude Sonnet 5 supports up to 1M tokens. OpenAI: GPT-4o (2024-11-20) supports up to 128K tokens.
Do both Anthropic: Claude Sonnet 5 and OpenAI: GPT-4o (2024-11-20) support tool calling?
Anthropic: Claude Sonnet 5: yes. OpenAI: GPT-4o (2024-11-20): yes.