Mercury 2.5 Preview is cheaper than Claude Sonnet 4 at $0.04/M vs $3/M input tokens.
| Spec | Claude Sonnet 4 | Mercury 2.5 Preview |
|---|---|---|
| Input price | $3/M tokens | $0.04/M tokens |
| Output price | $15/M tokens | $0.15/M tokens |
| Context window | 200K tokens | 260K tokens |
| Released | May 2025 | Aug 2026 |
Not enough votes to call it. On the specs, Claude Sonnet 4 has the edge: bigger model tier, major provider backing.
Mercury 2.5 Preview costs 100x less per token.
Mercury 2.5 Preview is cheaper on both — 75× input, 100× output
Claude Sonnet 4 uses 70.1x more emoji
Mercury 2.5 Preview is cheaper than Claude Sonnet 4 at $0.04/M vs $3/M input tokens.
| Spec | Claude Sonnet 4 | Mercury 2.5 Preview |
|---|---|---|
| Input price | $3/M tokens | $0.04/M tokens |
| Output price | $15/M tokens | $0.15/M tokens |
| Context window | 200K tokens | 260K tokens |
| Released | May 2025 | Aug 2026 |
Not enough votes to call it. On the specs, Claude Sonnet 4 has the edge: bigger model tier, major provider backing.
Mercury 2.5 Preview costs 100x less per token.
Mercury 2.5 Preview is cheaper on both — 75× input, 100× output
Claude Sonnet 4 uses 70.1x more emoji