SPECS
| context window | 1,000,000 tokens |
|---|---|
| max output | 64,000 tokens |
| price in / out | $3 / $15 per 1M tokens |
| weights | closed |
openrouter.ai/api/v1/models (as of 2026-11-12)
MODEL / CLAUDE-SONNET-4-5
Claude Sonnet 4.5
Anthropic's coding-focused frontier model.
model
textvisioncode
Kindmodel
Access—
Pricing—
Free tier—
Caps3
PUBLISHED BENCHMARKS
| sweBenchVerified | 77.2 |
|---|---|
| aaIndex | 20.7 |
| aaCodingIndex | 52.1 |
| aaAgenticIndex | 15.8 |
Anthropic published · 2025-09
MACHINE-READABLE
GET /api/v1/resources/claude-sonnet-4-5Open JSON ↗