Claude Opus 5.5 Fast
Claude Opus 5.5 Fast is Anthropic's language model with a 1.0M context window and up to 128K output tokens, starting at $8.00 / 1M input and $40.00 / 1M output. A high-capability Claude Opus model tuned for faster response latency while retaining strong reasoning performance.
Capabilities
Input2/5
Text·
Image✓
Audio·
Video·
PDF✓
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities6/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling·
Structured Outputs✓
Native JSON Schema✓
Web Search·
URL Context·
Computer Use✓
Code Execution·
File Search·
Prompt Caching✓
Assistant Prefill·
Pricing by Provider
US Dollar ($)
Per 1M tokens
| Provider | Standard | ||||
|---|---|---|---|---|---|
| Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | Cache Write 5m $ / 1M | Cache Write 1h $ / 1M | |
| $8.00 | $40.00 | $0.4 | $10.00 | $16.00 | |
Cost Calculator
US Dollar ($)
Preset:
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| Claude Opus 5.5 | 1.0M | $4.00 | $20.00 | Available | |
| Claude Opus 5.5 | 1.0M | $2.00 | $10.00 | Available | |
| Claude Opus 5 | 1.0M | $5.00 | $25.00 | Deprecating | |
| Claude Opus 5 | 1.0M | $2.50 | $12.50 | Available | |
| Claude Opus 5.5 Fast | — | 1.0M | $8.00 | $40.00 | Current |
| Claude Opus 4.8 | 1.0M | $5.00 | $25.00 | Available | |
| Claude Opus 4.8 | 1.0M | $2.50 | $12.50 | Available | |
| Claude Opus 4.7 | 1.0M | $5.00 | $25.00 | Deprecating | |
| Claude Opus 4.7 | 1.0M | $2.50 | $12.50 | Available | |
| Claude Opus 4.6 | 1.0M | $5.00 | $25.00 | Deprecated | |
| Claude Opus 4.6 | 1.0M | $2.50 | $12.50 | Available |
Other Models
| Model | Tier | Released | Context | Input / 1M | Output / 1M |
|---|---|---|---|---|---|
| Claude Haiku 5.5 | Haiku | 1.0M | $0.100 | $0.500 | |
| Claude Haiku 5.5 Batch | Haiku | 1.0M | $0.050 | $0.250 | |
| Claude Sonnet 5.5 | Sonnet | 1.0M | $2.00 | $10.00 | |
| Claude Sonnet 5.5 Batch | Sonnet | 1.0M | $1.00 | $5.00 | |
| Claude Fable 5.1 | — | 1.0M | $10.00 | $50.00 | |
| Claude Fable 5.1 | Fable | 1.0M | $5.00 | $25.00 | |
| Claude Fable 5 | Fable | 1.0M | $5.00 | $25.00 | |
| Claude Sonnet 5 | Sonnet | 1.0M | $2.00 | $10.00 | |
| Claude Sonnet 5 | Sonnet | 1.0M | $1.00 | $5.00 | |
| Claude Fable 5 | Fable | 1.0M | $10.00 | $50.00 |