Codebase test: Telnyx-hosted GLM runs 9% cheaper, 5% faster than OpenAI
SucceededMind · x · 2026-10-11
A cited single-run test queried the same large codebase (55 FastAPI files, 792K characters) about dependency injection resolution and caching on two providers:
- OpenAI GPT-5-mini: $0.005406, 11.66s
- Telnyx-hosted GLM-5.3 Flash: $0.004905, 11.06s
That's roughly 9% cheaper and 5% faster on Telnyx. The practical takeaway: Telnyx offers an OpenAI-compatible API, so you can swap in hosted open-weight models without rewriting client code, and it runs models on its own GPUs to avoid cloud token markups.
Caveats flagged upfront: different models, heavy input caching, and a single recorded run.
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