AI Observatory / Model Radar
Anthropic / anthropic/claude-sonnet-4.5
Anthropic: Claude Sonnet 4.5
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...
1,000,000
Context
64,000
Max output
$3.00 / 1M
Prompt price
2025-09-29
Created
01 / Snapshot
Pricing, context, modalities, and parameters.
Model Radar detail pages stay neutral and operator-readable: core metadata first, then workflow fit.
| Provider | Anthropic | Input modalities | text, image, file |
|---|---|---|---|
| Output modalities | text | Prompt price | $3.00 / 1M |
| Completion price | $15.00 / 1M | Request price | N/A |
| Context length | 1,000,000 | Max completion tokens | 64,000 |
| Supported parameters | include_reasoning, max_tokens, reasoning, response_format, stop, structured_outputs, temperature, tool_choice, tools, top_k, top_p | ||
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anthropic/claude-sonnet-4.5
Anthropic: Claude Sonnet 4.5
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...
Coding workflows
Cross-modal work
Long context
vision
tool-capable
long-context
03 / Colophon
Routes and exits.
Each model page stays simple: overview, compare, related models, then back to the public hub.