GLM / Z.ai (Zhipu AI) vs Codestral 2 (Mistral)
Which one should you pick? Here's the full breakdown.
GLM / Z.ai (Zhipu AI)
Zhipu AI's open-weights family -- GLM-5.1 (launched 2026-04-07) is 744B MoE / 40B active, topped SWE-Bench Pro at 58.4 (beating GPT-5.4 and Claude Opus 4.6), MIT licensed, 200K context. Trained entirely on 100K Huawei Ascend 910B chips -- first frontier model with zero Nvidia in the training stack
Codestral 2 (Mistral)
Mistral's dedicated code model -- Codestral 2 (launched 2026-04-08) relicensed under Apache 2.0, removing the commercial-use restrictions of the original. 22B dense, strong FIM (fill-in-middle), available via Mistral API + Hugging Face
| Category | GLM / Z.ai (Zhipu AI) | Codestral 2 (Mistral) |
|---|---|---|
| Ease of Use | 6.5 | 6.0 |
| Output Quality | 8.5 | 8.0 |
| Value | 9.0 | 9.0 |
| Features | 8.0 | 7.0 |
| Overall | 8.0 | 7.5 |
Pricing Comparison
| Feature | GLM / Z.ai (Zhipu AI) | Codestral 2 (Mistral) |
|---|---|---|
| Free Tier | Yes | Yes |
| Starting Price | $0 | $0 |
Benchmark Head-to-Head
GLM-5.1 (744B MoE / 40B active) benchmarks — Codestral 2 (Mistral) has no published benchmarks
| Benchmark | Description | Score |
|---|---|---|
| SWE-Bench Pro | 58.4% | |
| MMLU-Pro | Harder multi-subject reasoning | 81.2% |
| GPQA Diamond | Graduate-level science questions | 74.5% |
| HumanEval | Python code generation | 89.1% |
| SWE-Bench Verified | 64.2% | |
| BFCL (function calling) | 88% |
Which Should You Pick?
Pick GLM / Z.ai (Zhipu AI) if...
- ✓More features (8 vs 7)
Teams that need genuine MIT-licensed frontier open weights with no commercial strings. Especially strong for agentic workflows and vision (GLM-4.6V).
Visit GLM / Z.ai (Zhipu AI)Pick Codestral 2 (Mistral) if...
Developers and teams who want a legally-clean open-weights code model they can self-host OR hit via API, particularly those with EU data-residency requirements. Ideal for building in-house IDE extensions, code-review bots, or CI/CD AI integrations where the Apache 2.0 license removes procurement friction.
Visit Codestral 2 (Mistral)Our Verdict
GLM / Z.ai (Zhipu AI) edges out Codestral 2 (Mistral) with a 8.0 vs 7.5 overall score. Both are solid picks, but GLM / Z.ai (Zhipu AI) has the advantage in output quality.