Sonar Pro Search is the newer model, released after Claude Sonnet 4.5.
| Spec | Claude Sonnet 4.5 | Sonar Pro Search |
|---|---|---|
| Input price | $3/M tokens | $3/M tokens |
| Output price | $15/M tokens | $15/M tokens |
| Context window | 200K tokens | 200K tokens |
| Released | Sep 2025 | Oct 2025 |
Not enough votes to call it. On the specs, nothing separates them.
Claude Sonnet 4.5 uses 45.2x more emoji
Sonar Pro Search is the newer model, released after Claude Sonnet 4.5.
| Spec | Claude Sonnet 4.5 | Sonar Pro Search |
|---|---|---|
| Input price | $3/M tokens | $3/M tokens |
| Output price | $15/M tokens | $15/M tokens |
| Context window | 200K tokens | 200K tokens |
| Released | Sep 2025 | Oct 2025 |
Not enough votes to call it. On the specs, nothing separates them.
Claude Sonnet 4.5 uses 45.2x more emoji