GPT-Image-2.5 (Sunburst) vs Aleph Alpha Kolibri
A direct, empirical evaluation of GPT-Image-2.5 (Sunburst) (OpenAI) against Aleph Alpha Kolibri (Aleph Alpha).
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.
Aleph Alpha Kolibri
Developed by Aleph Alpha · 78.2 Billion Total Parameters (32 routed experts + 2 shared experts) parameters
EU AI Act and GDPR compliant enterprise deployments, European legal and technical translation, 1M context long-document analysis, and 3.46B parameter active inference efficiency.
| Metric | GPT-Image-2.5 (Sunburst) | Aleph Alpha Kolibri |
|---|---|---|
| SWE-bench Verified | 62.4% | 62.8% |
| MMLU-Pro | 89.5% | 86.4% |
| MATH-500 | 91.2% | 92.4% |
| Context Window | Spatial Vector Token Canvas (1792×1024) | 1,048,576 tokens (1M) |
| Input Pricing (per 1M) | $2.50 | $0.18 |
| Output Pricing (per 1M) | $10.00 | $0.55 |