Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with memor…
Model details →Anthropic: Claude Sonnet 4.6 vs OpenAI: GPT-4o
Anthropic: Claude Sonnet 4.6 and OpenAI: GPT-4o are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
GPT-4o ("o" for "omni") is OpenAI's latest AI model, supporting both text and image inputs with text outputs. It maintains the intelligence level of [GPT-4 Turbo](/models/openai/gpt-4-turbo) while being twice as fast and 50% more cost-effec…
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Sonnet 4.6 | OpenAI: GPT-4o | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1M | 128K | 🏆 Anthropic: Claude Sonnet 4.6 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $3.00 | $2.50 | 🏆 OpenAI: GPT-4o |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $15.00 | $10.00 | 🏆 OpenAI: GPT-4o |
| 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 4.6 |
Frequently asked questions
Is Anthropic: Claude Sonnet 4.6 better than OpenAI: GPT-4o?
Anthropic: Claude Sonnet 4.6 and OpenAI: GPT-4o are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
What's the price difference between Anthropic: Claude Sonnet 4.6 and OpenAI: GPT-4o?
Input: $3.00 vs $2.50 per 1M tokens. Output: $15.00 vs $10.00 per 1M tokens.
What context windows do Anthropic: Claude Sonnet 4.6 and OpenAI: GPT-4o support?
Anthropic: Claude Sonnet 4.6 supports up to 1M tokens. OpenAI: GPT-4o supports up to 128K tokens.
Do both Anthropic: Claude Sonnet 4.6 and OpenAI: GPT-4o support tool calling?
Anthropic: Claude Sonnet 4.6: yes. OpenAI: GPT-4o: yes.