GPT-5.1 Codex Max is the newer model, released after Sonar Pro Search.
| Spec | GPT-5.1 Codex Max | Sonar Pro Search |
|---|---|---|
| Input price | — | $3/M tokens |
| Output price | — | $15/M tokens |
| Context window | — | 200K tokens |
| Released | Dec 2025 | Oct 2025 |
Not enough votes to call it. On the specs, GPT-5.1 Codex Max has the edge: bigger model tier, newer, major provider backing.
Sonar Pro Search uses 16.9x more headings
GPT-5.1 Codex Max is the newer model, released after Sonar Pro Search.
| Spec | GPT-5.1 Codex Max | Sonar Pro Search |
|---|---|---|
| Input price | — | $3/M tokens |
| Output price | — | $15/M tokens |
| Context window | — | 200K tokens |
| Released | Dec 2025 | Oct 2025 |
Not enough votes to call it. On the specs, GPT-5.1 Codex Max has the edge: bigger model tier, newer, major provider backing.
Sonar Pro Search uses 16.9x more headings