GPT-5.6 Sol vs GLM 5.3 Flash
GPT-5.6 Sol vs GLM 5.3 Flash: which AI model is cheaper, has the larger context window and more capabilities? Side-by-side comparison updated daily.
Quick verdict
- GLM 5.3 Flash is 17× cheaper than GPT-5.6 Sol for the same mix of input and output tokens.
- GPT-5.6 Sol has the larger context window (1.1M), useful for long documents and big codebases.
- GLM 5.3 Flash is the more recent release (Aug 26, 2026).
- Only GLM 5.3 Flash has openly published weights you can run yourself.
- GPT-5.6 Sol scores higher on independent tests (overall index 162.0 vs 151.9).
- Choose GLM 5.3 Flash if cost matters most; choose GPT-5.6 Sol if you need its specific strengths above. For the best results, test both on your own prompts.
| GPT-5.6 Sol | GLM 5.3 Flash | |
|---|---|---|
| Company | OpenAI | Z.ai (Zhipu) |
| Released | Jul 9, 2026 | Aug 26, 2026 ● |
| Overall index | 162.0 ● | 151.9 |
| GPQA Diamond | 93.5% ● | 90.2% |
| AIME math | 100% ● | 93.9% |
| FrontierMath | 89.1% ● | 55.8% |
| SimpleQA Verified | 69.7% | — |
| Input (per 1M tokens) | $2 | $0.15 ● |
| Output (per 1M tokens) | $10 | $0.50 ● |
| Cost for 1M input + 1M output tokens | $12.00 | $0.65 ● |
| Providers | 7 | 33 ● |
| Context | 1.1M ● | 1M |
| Max output | 128K | 944K ● |
| Inputs | Files, Image, Text | Text, Image, Video |
| Outputs | Text | Text |
| Reasoning | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Open weights | — | ✓ |