Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...
Model details →Anthropic: Claude Sonnet 4.5 vs Sakana: Fugu Max
Sakana: Fugu Max wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
Fugu Max is the cost-performance model in Sakana AI's Fugu family. Rather than a single monolithic model, Fugu is a learned multi-agent orchestration system: a language model trained to route...
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Sonnet 4.5 | Sakana: Fugu Max | 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. | $3.00 | $2.00 | 🏆 Sakana: Fugu Max |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $15.00 | $6.00 | 🏆 Sakana: Fugu Max |
| 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 4.5 better than Sakana: Fugu Max?
Sakana: Fugu Max 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 4.5 and Sakana: Fugu Max?
Input: $3.00 vs $2.00 per 1M tokens. Output: $15.00 vs $6.00 per 1M tokens.
What context windows do Anthropic: Claude Sonnet 4.5 and Sakana: Fugu Max support?
Anthropic: Claude Sonnet 4.5 supports up to 1M tokens. Sakana: Fugu Max supports up to 1M tokens.
Do both Anthropic: Claude Sonnet 4.5 and Sakana: Fugu Max support tool calling?
Anthropic: Claude Sonnet 4.5: yes. Sakana: Fugu Max: yes.