GPT Image 1.5 (high) vs Nano Banana 2 (Gemini 3.1 Flash Image Preview): Which Text-to-Image Generation is Best?
Verdict: GPT Image 1.5 (high) wins by 8 points.
GPT Image 1.5 (high) takes the lead in this comparison, scoring 1268 points to Nano Banana 2 (Gemini 3.1 Flash Image Preview)'s 1260. This 8-point gap suggests that GPT Image 1.5 (high) outperforms its competitor in general image fidelity.
For users focused on photorealism, text rendering, GPT Image 1.5 (high) from OpenAI currently represents the state-of-the-art. Its higher Elo score indicates greater consistency across our benchmark set.
However, Nano Banana 2 (Gemini 3.1 Flash Image Preview) remains a formidable contender. Ranked #2, it is a top-tier choice. Depending on your specific needs—such as licensing (Proprietary) or ecosystem integration—Nano Banana 2 (Gemini 3.1 Flash Image Preview) may still be the right tool for your pipeline.
Comparison Data
| Feature | GPT Image 1.5 (high) | Nano Banana 2 (Gemini 3.1 Flash Image Preview) |
|---|---|---|
| Rank | #1 | #2 |
| Score | 1268 | 1260 |
| Developer | OpenAI | |
| License | Proprietary | Proprietary |
Conclusion
Both models are excellent choices within the Text-to-Image Generation landscape. We recommend checking the full leaderboard for the most up-to-date rankings as new models are released frequently.