GPT-5.1 is cheaper than Gemini 3.5 Flash at $1.25/M vs $1.5/M input tokens.
| Spec | Gemini 3.5 Flash | GPT-5.1 |
|---|---|---|
| Input price | $1.5/M tokens | $1.25/M tokens |
| Output price | $9/M tokens | $10/M tokens |
| Context window | 1.0M tokens | 400K tokens |
| Released | May 2026 | Nov 2025 |
Not enough votes to call it. On the specs, nothing separates them.
GPT-5.1 wins input (1.2× cheaper)·Gemini 3.5 Flash wins output (1.1× cheaper)
Gemini 3.5 Flash uses 3.9x more transitions
GPT-5.1 is cheaper than Gemini 3.5 Flash at $1.25/M vs $1.5/M input tokens.
| Spec | Gemini 3.5 Flash | GPT-5.1 |
|---|---|---|
| Input price | $1.5/M tokens | $1.25/M tokens |
| Output price | $9/M tokens | $10/M tokens |
| Context window | 1.0M tokens | 400K tokens |
| Released | May 2026 | Nov 2025 |
Not enough votes to call it. On the specs, nothing separates them.
GPT-5.1 wins input (1.2× cheaper)·Gemini 3.5 Flash wins output (1.1× cheaper)
Gemini 3.5 Flash uses 3.9x more transitions