Claude Sonnet 5.3
Claude Sonnet 5.3 is Anthropic's language model. A Sonnet-tier LLM from Anthropic representing the 5.3 generation, balancing strong reasoning and instruction-following with efficient performance.
Capabilities
Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
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 | — | — | — | — | Current |
| Claude Sonnet 5 | 1.0M | $2.00 | $10.00 | Available | |
| Claude Sonnet 4.6 | 1.0M | $3.00 | $15.00 | Available | |
| Claude Sonnet 4.5 | 1.0M | $3.00 | $15.00 | Available | |
| Claude Sonnet 4 | 1.0M | $3.00 | $15.00 | Deprecated | |
| Claude Sonnet 4.6 Adaptive | — | — | — | — | Available |
| Claude Sonnet 4.5 | — | — | — | — | 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 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 Opus 4.8 | Opus | 1.0M | $5.00 | $25.00 | |
| Claude Opus 4.8 Fast | Opus | 1.0M | $10.00 | $50.00 | |
| Claude Opus 4.7 Fast | Opus | 1.0M | $30.00 | $150.00 | |
| 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 | |
| Claude Haiku 4.5 | Haiku | 200K | $1.00 | $5.00 |