Aurora Alpha vs Claude Opus 4
Compare Aurora Alpha by OpenRouter against Claude Opus 4 by Anthropic, context windows of 128K vs 200K, tested across 53 shared challenges. Updated May 2026.
Which is better, Aurora Alpha or Claude Opus 4?
Aurora Alpha and Claude Opus 4 are both competitive models. Aurora Alpha costs $0/M input tokens vs $15/M for Claude Opus 4. Context windows: 128K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between Aurora Alpha and Claude Opus 4
Aurora Alpha is made by openrouter while Claude Opus 4 is from anthropic. Aurora Alpha has a 128K token context window compared to Claude Opus 4's 200K. On pricing, Aurora Alpha costs $0/M input tokens vs $15/M for Claude Opus 4.
Per 1M tokens
No community votes yet. On paper, Claude Opus 4 has the edge — bigger model tier, bigger context window, major provider backing.
Style Comparison
Claude Opus 4 uses 4.2x more lists
