{"slug": "glm-5-3-now-available-on-telnyx-inference", "title": "GLM-5.3 Now Available on Telnyx Inference", "summary": "Telnyx has launched GLM-5.3, a 753B-parameter reasoning model with a 1M token context window, on its Inference API, claiming it matches Kimi K3 on the Artificial Analysis Intelligence Index at roughly half the cost and twice the speed. The model, developed by Z.ai, runs on Telnyx-owned GPU infrastructure and supports low, high, and max reasoning effort, with max recommended for coding and complex analysis.", "body_md": "[Contact us](https://telnyx.com/contact-us)\n\n[Log in](https://portal.telnyx.com)\n\nGLM-5.3 is now available on the [Telnyx Inference API](https://telnyx.com/products/inference). It is a frontier-class reasoning model with intelligence comparable to Kimi K3, at roughly half the cost and twice the speed. The model runs on Telnyx-owned GPU infrastructure.\n\n`zai-org/GLM-5.3`\n\n. A 753B-parameter reasoning model with a 1M token context window, hosted on Telnyx-owned GPUs.`low`\n\n, `high`\n\n, and `max`\n\nreasoning effort. `max`\n\nis recommended for coding and complex analysis.Frontier intelligence has been locked behind premium pricing. GLM-5.3 changes that math. It matches Kimi K3 on the Artificial Analysis Intelligence Index while costing roughly half as much per token and generating output at twice the speed. Running on Telnyx-owned GPU infrastructure means inference stays on the same private backbone as your voice, messaging, and compute traffic. No cross-vendor hops, no reseller markup, no separate billing surface. For teams building AI agents that need frontier reasoning at production scale, the cost-per-task difference compounds fast.\n\n`zai-org/GLM-5.3`\n\nfrom the model dropdown.\n\n```\ncurl https://api.telnyx.com/v2/ai/chat/completions \\\n  -H \"Authorization: Bearer $TELNYX_API_KEY\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\n    \"model\": \"zai-org/GLM-5.3\",\n    \"messages\": [\n      {\"role\": \"user\", \"content\": \"Debug this Python function and explain the fix.\"}\n    ],\n    \"thinking\": {\"type\": \"enabled\"},\n    \"reasoning_effort\": \"max\"\n  }'\n```\n\n**Learn more** in the [Z.ai GLM-5.3 blog post](https://z.ai/blog/glm-5.3), the [Artificial Analysis model profile](https://artificialanalysis.ai/models/glm-5-3), or the [Inference API docs](https://developers.telnyx.com/docs/inference/models).", "url": "https://wpnews.pro/news/glm-5-3-now-available-on-telnyx-inference", "canonical_source": "https://telnyx.com/release-notes/glm-5-3-inference", "published_at": "2026-08-28 00:00:00+00:00", "updated_at": "2026-08-28 19:50:10.768551+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-products", "ai-infrastructure"], "entities": ["Telnyx", "GLM-5.3", "Z.ai", "Kimi K3", "Artificial Analysis Intelligence Index"], "alternates": {"html": "https://wpnews.pro/news/glm-5-3-now-available-on-telnyx-inference", "markdown": "https://wpnews.pro/news/glm-5-3-now-available-on-telnyx-inference.md", "text": "https://wpnews.pro/news/glm-5-3-now-available-on-telnyx-inference.txt", "jsonld": "https://wpnews.pro/news/glm-5-3-now-available-on-telnyx-inference.jsonld"}}