Workers AI - Z.ai GLM-5.3 now available on Workers AI

<p><a href="https://developers.cloudflare.com/workers-ai/models/glm-5.3/"><code>@cf/zai-org/glm-5.3</code></a> is now available on Workers AI. It is Z.ai's flagship agentic coding model, built for long-running, tool-driven development workflows rather than single-turn chat.</p> <p>GLM-5.3 uses the same base model as GLM-5.2, with every gain coming from post-training. The results are substantial on coding and agentic benchmarks: <a href="https://huggingface.co/zai-org/GLM-5.3" target="_blank" rel="noopener">Z.ai reports<span class="external-link"> ↗︎</span></a> a 50% improvement over GLM-5.2 on its in-house Z.ai Code Bench, and calls GLM-5.3 the most capable open-weights model for coding. On public benchmarks, it scores 88.2 on Terminal Bench 2.1 (up from 81.0), 28.3 on Terminal Bench 3.0 — open-source state of the art, up from 4.6 — 66.9 on DeepSWE (up from 46.2), 78.1 on FrontierSWE (up from 67.5), and 42.5 on SWE-Marathon (up from 19.4). It is also the top-scoring model in Z.ai's comparisons on CyberGym for vulnerability discovery (84.5) and on long-horizon automation tasks like AutomationBench (48.2).</p> <p>The price-to-performance ratio is the compelling part. On Workers AI, GLM-5.3 costs the same as GLM-5.2 — $1.40 per M input tokens, $0.26 per M cached input tokens, and $4.40 per M output tokens — while roughly doubling GLM-5.2's scores on long-horizon benchmarks like SWE-Marathon, and improving them by more than 6x on Terminal Bench 3.0.</p> <p>GLM-5.3 requires the <a href="https://developers.cloudflare.com/workers/platform/pricing/#workers">Workers Paid plan</a> or prepaid <a href="https://developers.cloudflare.com/ai-gateway/features/unified-billing/">AI Gateway credits</a>.</p> <p>Use GLM-5.3 through the <a href="https://developers.cloudflare.com/workers-ai/configuration/bindings/">Workers AI binding</a> (<code>env.AI.run()</code>), the REST API, the <a href="https://developers.cloudflare.com/workers-ai/configuration/open-ai-compatibility/">OpenAI-compatible endpoint</a>, or <a href="https://developers.cloudflare.com/ai-gateway/">AI Gateway</a>.</p> <p>For more information, refer to the <a href="https://developers.cloudflare.com/workers-ai/models/glm-5.3/">GLM-5.3 model page</a> and <a href="https://developers.cloudflare.com/workers-ai/platform/pricing/">pricing</a>.</p>