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 | |
| Benchmarks | |
|---|---|
| Intelligence Index | #82 |
| Coding Index | #60 |
| Math Index | #50 |
| MMLU-Pro | #10 |
| GPQA | #119 |
| HLE | #133 |
| LiveCodeBench | #72 |
| IFBench | #133 |
| Time to First Token | #68 |
| SciCode | #77 |
| AIME 2025 | #50 |
| LCR | #113 |
| TerminalBench Hard | #61 |
| TAU2 | #129 |
| Output TPS | #310 |
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 | 1.0M | $2.00 | $10.00 | Deprecating | |
| Claude Sonnet 4.6 | 1.0M | $3.00 | $15.00 | Deprecating | |
| Claude Sonnet 4.5 | 1.0M | $3.00 | $15.00 | Deprecating | |
| 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 | |
| Claude Sonnet 3.7 | 200K | $3.00 | $15.00 | Deprecated |
Other Models
| Model | Tier | Released | Context | Input / 1M | Output / 1M |
|---|---|---|---|---|---|
| Claude Fable 5.1 | — | 1.0M | $10.00 | $50.00 | |
| Claude Opus 5 | Opus | 1.0M | $5.00 | $25.00 | |
| Claude Fable 5 | Fable | 1.0M | $10.00 | $50.00 | |
| Claude Fable 5.3 | Fable | — | — | — | — |
| Claude Mythos 5 | Mythos | — | 1.0M | $10.00 | $50.00 |
| Claude Mythos 5.1 | Mythos | — | — | $10.00 | $50.00 |
| Claude Opus 4.8 | Opus | 1.0M | $5.00 | $25.00 | |
| Claude Opus 4.7 | Opus | 1.0M | $5.00 | $25.00 | |
| Claude Opus 4.6 | Opus | 1.0M | $5.00 | $25.00 | |
| Claude Opus 4.5 | Opus | 410K | $5.00 | $25.00 |