Claude Fable 5 vs Claude Opus 4
Compare Claude Fable 5 and Claude Opus 4, 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?
Claude Fable 5 and Claude Opus 4 are both competitive models. Claude Fable 5 costs $10/M input tokens vs $15/M for Claude Opus 4. Context windows: 1000K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Fable 5 and Claude Opus 4
Claude Fable 5 is made by anthropic while Claude Opus 4 is from anthropic. Claude Fable 5 has a 1000K token context window compared to Claude Opus 4's 200K. On pricing, Claude Fable 5 costs $10/M input tokens vs $15/M for Claude Opus 4.
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 uses 5.6x more transitions
