Claude Sonnet 4.5
Claude Sonnet 4.5 is an AI model from Anthropic. Claude Sonnet 4.5 with extended thinking mode enabled for enhanced step-by-step reasoning on complex tasks.
| Specifications | |
|---|---|
anthropic-claude-4-5-sonnet-thinking | |
| Active | |
| Anthropic | |
Capabilities
Input0/5
Text·
Image·
Audio·
Video·
PDF·
Output0/5
Text·
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| Claude Sonnet 5.3 | — | — | — | — | Available |
| Claude Sonnet 5 | 1.0M | $1.00 | $5.00 | Available | |
| Claude Sonnet 4.6 | 1.0M | $1.50 | $7.50 | Available | |
| Claude Sonnet 4.5 | 1.0M | $1.50 | $7.50 | Available | |
| Claude Sonnet 4 | 1.0M | $3.00 | $15.00 | Deprecated | |
| Claude Sonnet 4.5 | — | — | — | — | Current |
| Claude Sonnet 4.6 Adaptive | — | — | — | — | Available |
| Claude Sonnet 4.6 Non-Reasoning Low Effort | — | — | — | — | Available |
| Claude Sonnet 4 | — | — | — | — | Available |
| Claude Sonnet 4.1 | — | 200K | $3.00 | $15.00 | Available |
| Claude Sonnet 3.7 | 200K | — | — | Available |
Other Models
| Model | Tier | Released | Context | Input / 1M | Output / 1M |
|---|---|---|---|---|---|
| Claude Opus 5.3 | Opus | — | — | — | — |
| Claude Opus 5 | Opus | 1.0M | $2.50 | $12.50 | |
| Claude Opus 5 Fast | Opus | 1.0M | $10.00 | $50.00 | |
| Claude Fable 5 | Fable | 1.0M | $5.00 | $25.00 | |
| Claude Fable 5.3 | Fable | — | — | — | — |
| Claude Mythos 5 | Mythos | — | 1.0M | $10.00 | $50.00 |
| Claude Opus 5 Claude Opus 4.8 | Opus | — | — | — | $50.00 |
| Claude Opus 4.8 | Opus | 1.0M | $2.50 | $12.50 | |
| Claude Opus 4.8 Fast | Opus | 1.0M | $10.00 | $50.00 | |
| Claude Opus 4.7 Fast | Opus | 1.0M | $30.00 | $150.00 |