GLM-5.2 (Zhipu AI) is a 744B MoE open-weight model with 1M context, MIT license, and frontier-class performance. Hallucination rate 34% — lower than Claude Sonnet 4.5 (42%). SWE-bench 77.8%, Humanity Last Exam 50.4% (beats GPT-5.2).
Z.ai charges $1.40 input / $4.40 output per 1M tokens. Vynex offers the same GLM-5.2 at 65-80% of official price. Volume tier ($0.91/$2.86) is cheaper than DeepInfra ($0.95/$3.00). Plus multi-model access (GPT + Claude + Gemini) in one endpoint — with USDT and wire transfer for users without credit cards.
| Feature | Vynex API | Z.ai official |
|---|---|---|
| GLM-5.2 input / 1M tokens | $0.91 (volume) | $1.40 |
| GLM-5.2 output / 1M tokens | $2.86 (volume) | $4.40 |
| Discount vs Z.ai official | 65-80% off | baseline |
| Cheaper than DeepInfra | ✓ | N/A |
| Also GPT, Claude, Gemini in one key | ✓ | ✗ |
| USDT / crypto payment | ✓ | ✗ |
| Wire transfer + B2B invoice | ✓ | ✗ |
| OpenAI-compatible API | ✓ | ✓ |
| Volume custom pricing | ✓ | ✗ |
Vynex aggregates upstream capacity at bulk rates and passes the savings on. Standard pricing is 80% of official ($1.12/$3.52); volume pricing above 10B tokens/month reaches 65% ($0.91/$2.86). Above 50B tokens, custom pricing is available.
Yes. Vynex serves the same GLM-5.2 model weights via an OpenAI-compatible endpoint. The API is identical — set base_url to Vynex and use model name GLM-5.2.
Yes. Vynex supports USDT crypto payments and B2B wire transfer with commercial invoice — designed for users in Russia, MENA, and Southeast Asia where credit card access to OpenRouter or DeepInfra is limited.
GLM-5.2 has the lowest hallucination rate (34%) of any frontier model. On SWE-bench it scores 77.8%, close to GPT-5.2. For cost-sensitive high-volume workloads — especially Chinese-language generation — GLM-5.2 at 65% off is the best value available.