GLM-5.3 vs GPT-5.6 Sol
GLM-5.3 (Z.ai (Zhipu AI)) and GPT-5.6 Sol (OpenAI) compared on benchmarks, pricing, context window, and use-case rankings.
- GLM-5.3 is cheaper on input tokens — $1.40 vs $5.00 per 1M.
- GPT-5.6 Sol has a larger context window (1.1M vs 1M tokens).
- GLM-5.3 ranks higher for coding (96th vs 94th percentile).
| Attribute | GLM-5.3 | GPT-5.6 Sol |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | — | 161 |
| Coding | 96 | 94 |
| Math | — | 97 |
| Reasoning & Knowledge | 85 | 94 |
| Agentic & Tools | — | 64 |
| Specifications | ||
| Developer | Z.ai (Zhipu AI) | OpenAI |
| Family | — | GPT |
| Released | Aug 14, 2026 | Jul 9, 2026 |
| Parameters | 744B | — |
| Availability | API access | API access |
| Context window | 1M | 1.1M |
| Price — $/M input | $1.40 | $5.00 |
| Price — $/M output | $4.40 | $30.00 |
| Inputs | text | file, image, text |
| Outputs | text | text |
| Benchmarks | ||
| GPQA Diamond | 92% | 93% |
| Humanity's Last Exam | 42% | 50% |
| SciCode | 56% | 56% |
| AIME 2024/2025 | — | 100% |
| APEX | — | 40% |
| ARC-AGI | — | 98% |
| ARC-AGI-2 | — | 93% |
| SimpleBench | — | 72% |
| SimpleQA Verified | — | 72% |
| WebDev Arena | — | 1620 |
| WeirdML | — | 89% |
| τ²-bench | — | 85% |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Frequently asked questions
Which is cheaper, GLM-5.3 or GPT-5.6 Sol?
GLM-5.3 is cheaper on input tokens at $1.40 per million, versus $5.00 (representative OpenRouter pricing).
Which has a larger context window, GLM-5.3 or GPT-5.6 Sol?
GPT-5.6 Sol supports up to 1.1M tokens, compared with 1M for the other.
Which is better for coding, GLM-5.3 or GPT-5.6 Sol?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, GLM-5.3 ranks higher — 96th vs 94th percentile among the models tracked on Model Beat.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.