Claude Fable 5 vs Claude Opus 4.1
Compare Claude Fable 5 and Claude Opus 4.1, both from Anthropic, context windows of 1.0M vs 200K, tested across 53 shared challenges. Updated June 2026.
Which is better, Claude Fable 5 or Claude Opus 4.1?
Claude Fable 5 and Claude Opus 4.1 are both competitive models. Claude Fable 5 costs $10/M input tokens vs $15/M for Claude Opus 4.1. Context windows: 1000K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Fable 5 and Claude Opus 4.1
Claude Fable 5 is made by anthropic while Claude Opus 4.1 is from anthropic. Claude Fable 5 has a 1000K token context window compared to Claude Opus 4.1's 200K. On pricing, Claude Fable 5 costs $10/M input tokens vs $15/M for Claude Opus 4.1.
Per 1M tokens
Claude Fable 5 is cheaper on both — 1.5× input, 1.5× output
No community votes yet. On paper, Claude Fable 5 has the edge — newer, bigger context window.
Style Comparison
Claude Opus 4.1 uses 3.9x more sentence length
