GPT-Image-2.5 (Sunburst) vs Space Bunny Alpha (Stealth)
A direct, empirical evaluation of GPT-Image-2.5 (Sunburst) (OpenAI) against Space Bunny Alpha (Stealth) (MiniMax (Unannounced Stealth Release via OpenRouter)).
GPT-Image-2.5 (Sunburst)
Developed by OpenAI · Proprietary Multimodal DiT parameters
High-fidelity typographic rendering, raytracing reflection accuracy, sketch-to-image conditioning, and localized comment inpainting.
Space Bunny Alpha (Stealth)
Developed by MiniMax (Unannounced Stealth Release via OpenRouter) · Proprietary Omni-Modal Frontier Architecture parameters
Massive 512K output codebases, single-shot 3D voxel world generation, native audio/video multimodal debugging, and high-context software synthesis.
| Metric | GPT-Image-2.5 (Sunburst) | Space Bunny Alpha (Stealth) |
|---|---|---|
| SWE-bench Verified | 62.4% | 65.4% |
| MMLU-Pro | 89.5% | 86.2% |
| MATH-500 | 91.2% | 92.8% |
| Context Window | Spatial Vector Token Canvas (1792×1024) | 1,000,000 tokens |
| Input Pricing (per 1M) | $2.50 | $0.00 |
| Output Pricing (per 1M) | $10.00 | $0.00 |