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 (batch) vs Pareto 26.10 Preview
Pareto 26.10 Preview wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
Pareto is a multimodal composite model built for research, coding, and agentic workflows, while delivering frontier-level performance across a broad range of general-purpose tasks. This is a preview of the...
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Sonnet 4.5 (batch) | Pareto 26.10 Preview | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1M | 1.0M | 🏆 Pareto 26.10 Preview |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $1.50 | $0.80 | 🏆 Pareto 26.10 Preview |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $7.50 | $3.20 | 🏆 Pareto 26.10 Preview |
| 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 4.5 (batch) |
Frequently asked questions
Is Anthropic: Claude Sonnet 4.5 (batch) better than Pareto 26.10 Preview?
Pareto 26.10 Preview 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 4.5 (batch) and Pareto 26.10 Preview?
Input: $1.50 vs $0.80 per 1M tokens. Output: $7.50 vs $3.20 per 1M tokens.
What context windows do Anthropic: Claude Sonnet 4.5 (batch) and Pareto 26.10 Preview support?
Anthropic: Claude Sonnet 4.5 (batch) supports up to 1M tokens. Pareto 26.10 Preview supports up to 1.0M tokens.
Do both Anthropic: Claude Sonnet 4.5 (batch) and Pareto 26.10 Preview support tool calling?
Anthropic: Claude Sonnet 4.5 (batch): yes. Pareto 26.10 Preview: yes.