SPECS
| context window | 1,000,000 tokens |
|---|---|
| max output | 128,000 tokens |
| price in / out | $4 / $20 per 1M tokens |
| weights | closed |
openrouter.ai/api/v1/models (as of 2026-11-15)
MODEL / CLAUDE-OPUS-5-5
Claude Opus 5.5
Anthropic's 5.5 flagship — SOTA Terminal-Bench 4.0 (vendor-run 66.4% xhigh; independent 59.6%).
model
textvisioncodereasoning
Kindmodel
Access—
Pricing—
Free tier—
Caps4
PUBLISHED BENCHMARKS
| terminalBench4 | 66.4 |
|---|---|
| gdpvalAA | 1846 Elo |
| aaIndex | 59.1 |
Anthropic published · 2026-09
MACHINE-READABLE
GET /api/v1/resources/claude-opus-5-5Open JSON ↗