Claude 3.7 Sonnet vs Claude Fable 5
Compare Claude 3.7 Sonnet and Claude Fable 5, both from Anthropic, context windows of 200K vs 1.0M, tested across 54 shared challenges. Updated June 2026.
Which is better, Claude 3.7 Sonnet or Claude Fable 5?
Claude 3.7 Sonnet and Claude Fable 5 are both competitive models. Claude 3.7 Sonnet costs $3/M input tokens vs $10/M for Claude Fable 5. Context windows: 200K vs 1000K tokens. Compare their real outputs side by side below.
Key Differences Between Claude 3.7 Sonnet and Claude Fable 5
Claude 3.7 Sonnet is made by anthropic while Claude Fable 5 is from anthropic. Claude 3.7 Sonnet has a 200K token context window compared to Claude Fable 5's 1000K. On pricing, Claude 3.7 Sonnet costs $3/M input tokens vs $10/M for Claude Fable 5.
Per 1M tokens
Claude 3.7 Sonnet is cheaper on both — 3.3× input, 3.3× output
No community votes yet. On paper, Claude Fable 5 has the edge — bigger model tier, newer, bigger context window.
Claude 3.7 Sonnet is 3.3x cheaper per token — worth considering if cost matters.
Style Comparison
Claude Fable 5 uses 58.2x more emoji
