Google's Gemini and OpenAI's GPT, compared through their current models on the Respan Index. The strongest Gemini model today is Gemini 4 Argon (#3 on the Respan Index, 70.3); the strongest GPT model is GPT-6 Astra (#2, 70.5). Gemini's best models lead in coding; GPT's lead in agents, reasoning, knowledge and human preference.
| Category | Gemini | GPT |
|---|---|---|
| coding | Gemini 4 Argon 64.4 | GPT-6 Astra 61.8 |
| agents | Gemini 4 Argon 75.9 | GPT-6 Astra 77.0 |
| reasoning | Gemini 4 Argon 78.0 | GPT-6.1 Sol 78.6 |
| knowledge | Gemini 3.1 Pro Preview 72.9 | GPT-6 Astra 75.8 |
| human preference | Gemini 4 Argon 57.4 | GPT-6 Astra 59.7 |
Each family's highest Respan Index category score; the higher one is bold. * Estimated: no published scores in that category.
Respan Index rank and score, blended list price per 1M tokens.
Respan Index rank and score, blended list price per 1M tokens.
The cheapest ranked Gemini model is Gemini 3.1 Flash-Lite at $0.563 per 1M tokens blended; the cheapest GPT model is GPT-5 nano at $0.138.