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-3.5 Turbo Instruct
Anthropic: Claude Sonnet 4.6 wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
This model is a variant of GPT-3.5 Turbo tuned for instructional prompts and omitting chat-related optimizations. Training data: up to Sep 2021.
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Sonnet 4.6 | OpenAI: GPT-3.5 Turbo Instruct | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1M | 4K | 🏆 Anthropic: Claude Sonnet 4.6 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $3.00 | $1.50 | 🏆 OpenAI: GPT-3.5 Turbo Instruct |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $15.00 | $2.00 | 🏆 OpenAI: GPT-3.5 Turbo Instruct |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | — | 🏆 Anthropic: Claude Sonnet 4.6 |
| Vision input Accepts image inputs alongside text. | Yes | — | 🏆 Anthropic: Claude Sonnet 4.6 |
| 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-3.5 Turbo Instruct?
Anthropic: Claude Sonnet 4.6 wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Anthropic: Claude Sonnet 4.6 and OpenAI: GPT-3.5 Turbo Instruct?
Input: $3.00 vs $1.50 per 1M tokens. Output: $15.00 vs $2.00 per 1M tokens.
What context windows do Anthropic: Claude Sonnet 4.6 and OpenAI: GPT-3.5 Turbo Instruct support?
Anthropic: Claude Sonnet 4.6 supports up to 1M tokens. OpenAI: GPT-3.5 Turbo Instruct supports up to 4K tokens.
Do both Anthropic: Claude Sonnet 4.6 and OpenAI: GPT-3.5 Turbo Instruct support tool calling?
Anthropic: Claude Sonnet 4.6: yes. OpenAI: GPT-3.5 Turbo Instruct: not advertised.