Claude Sonnet 4 vs Inception: Mercury 2
Compare Claude Sonnet 4 by Anthropic against Inception: Mercury 2 by Inception, context windows of 200K vs 128K, tested across 53 shared challenges. Updated June 2026.
Which is better, Claude Sonnet 4 or Inception: Mercury 2?
Claude Sonnet 4 and Inception: Mercury 2 are both competitive models. Claude Sonnet 4 costs $3/M input tokens vs $0.25/M for Inception: Mercury 2. Context windows: 200K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Sonnet 4 and Inception: Mercury 2
Claude Sonnet 4 is made by anthropic while Inception: Mercury 2 is from inception. Claude Sonnet 4 has a 200K token context window compared to Inception: Mercury 2's 128K. On pricing, Claude Sonnet 4 costs $3/M input tokens vs $0.25/M for Inception: Mercury 2.
Per 1M tokens
Inception: Mercury 2 is cheaper on both — 12× input, 20× output
No community votes yet. On paper, Claude Sonnet 4 has the edge — bigger model tier, bigger context window, major provider backing.
Inception: Mercury 2 is 20x cheaper per token — worth considering if cost matters.
Style Comparison
Claude Sonnet 4 uses 10.7x more emoji
