Quick Start
- 1
- 2Use the OpenRouter SDK or REST API to call
anthropic/claude-opus-4.8— see the documentation for request format. - 3
Code Examples
About OpenRouter
OpenRouter provides a unified interface for Large Language Models with better pricing, improved uptime, and no subscription requirements. Route across providers for cost optimization and reliability.
OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Pricing on OpenRouter
| Type | Price (per 1M) |
|---|---|
| Input tokens | $5.00 |
| Output tokens | $25.00 |
Capabilities
About Claude Opus 4.8
Claude Opus 4.8 is Anthropic's most capable generally-available model for complex reasoning, long-horizon agentic coding, and high-autonomy work. It improves on Opus 4.7 across agentic coding (SWE-bench Pro 69.2% vs 64.3%), agentic terminal coding (Terminal-Bench 2.1 74.6% vs 66.1%), multidisciplinary reasoning (HLE 57.9% with tools vs 54.7%), and agentic computer use (OSWorld-Verified 83.4%). Features a 1M-token context window (200k on Microsoft Foundry), 128k max output tokens, adaptive thinking with effort control defaulting to high, computer use, and a fast mode at 2.5× speed ($10/$50 per MTok). Approximately 4× less likely than Opus 4.7 to leave undetected code flaws. Deprecated Claude Opus 4 and Claude Sonnet 4 should migrate to Claude Opus 4.8.