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 Anthropic: Claude Fable Latest
Anthropic: Claude Sonnet 5 wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
This model always redirects to the latest model in the Claude Fable family.
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Sonnet 5 | Anthropic: Claude Fable Latest | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1M | 1M | Tie |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $2.00 | $10.00 | 🏆 Anthropic: Claude Sonnet 5 |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $10.00 | $50.00 | 🏆 Anthropic: Claude Sonnet 5 |
| 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 | Yes | Tie |
Frequently asked questions
Is Anthropic: Claude Sonnet 5 better than Anthropic: Claude Fable Latest?
Anthropic: Claude Sonnet 5 wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Anthropic: Claude Sonnet 5 and Anthropic: Claude Fable Latest?
Input: $2.00 vs $10.00 per 1M tokens. Output: $10.00 vs $50.00 per 1M tokens.
What context windows do Anthropic: Claude Sonnet 5 and Anthropic: Claude Fable Latest support?
Anthropic: Claude Sonnet 5 supports up to 1M tokens. Anthropic: Claude Fable Latest supports up to 1M tokens.
Do both Anthropic: Claude Sonnet 5 and Anthropic: Claude Fable Latest support tool calling?
Anthropic: Claude Sonnet 5: yes. Anthropic: Claude Fable Latest: yes.
Compare Anthropic: Claude Sonnet 5 with other models
vs Anthropic Claude Haiku Latestvs Anthropic Claude Sonnet Latestvs Anthropic: Claude Fable Latestvs Anthropic: Claude Opus Latest