GLM 5.1 is cheaper than GPT-4o (Omni) at $1.4/M vs $2.5/M input tokens.
| Spec | GLM 5.1 | GPT-4o (Omni) |
|---|---|---|
| Input price | $1.4/M tokens | $2.5/M tokens |
| Output price | $4.4/M tokens | $10/M tokens |
| Context window | 203K tokens | 128K tokens |
| Released | Apr 2026 | May 2024 |
Not enough votes to call it. On the specs, nothing separates them.
GLM 5.1 is cheaper on both — 1.8× input, 2.3× output
GPT-4o (Omni) uses 2.5x more emoji
GLM 5.1 is cheaper than GPT-4o (Omni) at $1.4/M vs $2.5/M input tokens.
| Spec | GLM 5.1 | GPT-4o (Omni) |
|---|---|---|
| Input price | $1.4/M tokens | $2.5/M tokens |
| Output price | $4.4/M tokens | $10/M tokens |
| Context window | 203K tokens | 128K tokens |
| Released | Apr 2026 | May 2024 |
Not enough votes to call it. On the specs, nothing separates them.
GLM 5.1 is cheaper on both — 1.8× input, 2.3× output
GPT-4o (Omni) uses 2.5x more emoji