GPT-5.1-Codex is the newer model, released after Cypher Alpha (free).
| Spec | Cypher Alpha (free) | GPT-5.1-Codex |
|---|---|---|
| Input price | — | $1.25/M tokens |
| Output price | — | $10/M tokens |
| Context window | — | 400K tokens |
| Released | Jul 2025 | Nov 2025 |
Not enough votes to call it. On the specs, GPT-5.1-Codex has the edge: bigger model tier, newer, bigger context window, major provider backing.
GPT-5.1-Codex uses 50.1x more headings
GPT-5.1-Codex is the newer model, released after Cypher Alpha (free).
| Spec | Cypher Alpha (free) | GPT-5.1-Codex |
|---|---|---|
| Input price | — | $1.25/M tokens |
| Output price | — | $10/M tokens |
| Context window | — | 400K tokens |
| Released | Jul 2025 | Nov 2025 |
Not enough votes to call it. On the specs, GPT-5.1-Codex has the edge: bigger model tier, newer, bigger context window, major provider backing.
GPT-5.1-Codex uses 50.1x more headings