GLM-4.6 vs GPT-5.6 Sol
GLM-4.6 (Z.ai (Zhipu AI),Tsinghua University) and GPT-5.6 Sol (OpenAI) compared on benchmarks, pricing, context window, and use-case rankings.
- GPT-5.6 Sol leads on overall intelligence (ECI 162 vs 141).
- GLM-4.6 is cheaper on input tokens — $0.55 vs $5.00 per 1M.
- GPT-5.6 Sol has a larger context window (1.1M vs 205K tokens).
- GPT-5.6 Sol ranks higher for coding (95th vs 24th percentile).
| Attribute | GLM-4.6 | GPT-5.6 Sol |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 141 | 162 |
| Coding | 24 | 95 |
| Math | 21 | 97 |
| Reasoning & Knowledge | 30 | 95 |
| Agentic & Tools | 14 | 67 |
| Specifications | ||
| Developer | Z.ai (Zhipu AI),Tsinghua University | OpenAI |
| Family | — | GPT |
| Released | Sep 30, 2025 | Jul 9, 2026 |
| Parameters | 357B | — |
| Availability | Open weights (unrestricted) | API access |
| Context window | 205K | 1.1M |
| Price — $/M input | $0.55 | $5.00 |
| Price — $/M output | $2.20 | $30.00 |
| Inputs | text | file, image, text |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 86% | 100% |
| APEX | 4% | 40% |
| FrontierMath | 4% | — |
| FrontierMath Tier 4 | 2% | — |
| GPQA Diamond | 78% | 93% |
| Humanity's Last Exam | 13% | 47% |
| LiveCodeBench | 70% | — |
| MMLU-Pro | 83% | — |
| SciCode | 38% | 56% |
| Terminal-Bench | 25% | — |
| WebDev Arena | 1366 | — |
| τ²-bench | 70% | 85% |
| ARC-AGI | — | 98% |
| ARC-AGI-2 | — | 93% |
| SimpleBench | — | 72% |
| SimpleQA Verified | — | 72% |
| WeirdML | — | 89% |
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
Is GLM-4.6 better than GPT-5.6 Sol?
On Epoch AI's Capabilities Index, GPT-5.6 Sol scores higher (162) than GLM-4.6 (141). The right pick depends on your task — compare their coding, math, and reasoning scores in the table above.
Which is cheaper, GLM-4.6 or GPT-5.6 Sol?
GLM-4.6 is cheaper on input tokens at $0.55 per million, versus $5.00 (representative OpenRouter pricing).
Which has a larger context window, GLM-4.6 or GPT-5.6 Sol?
GPT-5.6 Sol supports up to 1.1M tokens, compared with 205K for the other.
Which is better for coding, GLM-4.6 or GPT-5.6 Sol?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, GPT-5.6 Sol ranks higher — 95th vs 24th 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.