[Workers AI] Add GLM 5.3 Flash model (#33041)

Author: mchenco

src/content/changelog/workers-ai/2026-08-26-glm-5.3-flash-workers-ai.mdx

@@ -0,0 +1,17 @@
+---
+title: "Z.ai GLM-5.3 Flash now available on Workers AI"
+description: GLM-5.3 Flash is now available on Workers AI, a 320B MoE model with vision, reasoning, and function calling.
+products:
+  - workers-ai
+date: 2026-08-26
+---
+
+[`@cf/zai-org/glm-5.3-flash`](/workers-ai/models/glm-5.3-flash/) is now available on Workers AI. It is the first natively multimodal model in the GLM-5 series, built on a Mixture-of-Experts architecture with 320B total parameters and 18B active per token.
+
+GLM-5.3 Flash is the first GLM-family model on Workers AI to support multimodal inputs. It outperforms GLM-5.2 across benchmarks and real-world workloads at a lower price, while approaching Claude Opus 4.8 on coding and agentic benchmarks.
+
+GLM-5.3 Flash requires the [Workers Paid plan](/workers/platform/pricing/#workers) or prepaid [AI Gateway credits](/ai-gateway/features/unified-billing/).
+
+Use GLM-5.3 Flash through the [Workers AI binding](/workers-ai/configuration/bindings/) (`env.AI.run()`), the REST API, the [OpenAI-compatible endpoint](/workers-ai/configuration/open-ai-compatibility/), or [AI Gateway](/ai-gateway/).
+
+For more information, refer to the [GLM-5.3 Flash model page](/workers-ai/models/glm-5.3-flash/) and [pricing](/workers-ai/platform/pricing/).

src/content/docs/workers-ai/platform/pricing.mdx

@@ -26,7 +26,7 @@ All limits reset daily at 00:00 UTC. If you exceed any one of the above limits,
 | Workers Paid | 10,000 Neurons per day | $0.011 / 1,000 Neurons        |
 
 :::note
-Some models require a paid billing method. This applies to `@cf/moonshotai/kimi-k2.6`, `@cf/moonshotai/kimi-k2.7-code`, `@cf/zai-org/glm-5.2`, `@cf/deepseek-ai/deepseek-v4-flash-0731`, and `@cf/deepseek-ai/deepseek-v4-pro-0813`. You can access these models with either the [Workers Paid plan](/workers/platform/pricing/#workers) or prepaid [AI Gateway credits](/ai-gateway/features/unified-billing/).
+Some models require a paid billing method. This applies to `@cf/moonshotai/kimi-k2.6`, `@cf/moonshotai/kimi-k2.7-code`, `@cf/zai-org/glm-5.2`, `@cf/zai-org/glm-5.3-flash`, `@cf/deepseek-ai/deepseek-v4-flash-0731`, and `@cf/deepseek-ai/deepseek-v4-pro-0813`. You can access these models with either the [Workers Paid plan](/workers/platform/pricing/#workers) or prepaid [AI Gateway credits](/ai-gateway/features/unified-billing/).
 :::
 
 ## Pay with AI Gateway credits
@@ -77,6 +77,7 @@ The Price in Tokens column is equivalent to the Price in Neurons column - the di
 | @cf/ibm-granite/granite-4.0-h-micro          | $0.017 per M input tokens <br/> $0.112 per M output tokens                                        | 1542 neurons per M input tokens <br/> 10158 neurons per M output tokens                                                  |
 | @cf/zai-org/glm-4.7-flash                    | $0.060 per M input tokens <br/> $0.400 per M output tokens                                        | 5500 neurons per M input tokens <br/> 36400 neurons per M output tokens                                                  |
 | @cf/zai-org/glm-5.2                          | $1.400 per M input tokens <br/> $0.260 per M cached input tokens <br/> $4.400 per M output tokens | 127273 neurons per M input tokens <br/> 23636 neurons per M cached input tokens <br/> 400000 neurons per M output tokens |
+| @cf/zai-org/glm-5.3-flash                    | $0.150 per M input tokens <br/> $0.030 per M cached input tokens <br/> $0.500 per M output tokens | 13636 neurons per M input tokens <br/> 2727 neurons per M cached input tokens <br/> 45455 neurons per M output tokens |
 | @cf/nvidia/nemotron-3-120b-a12b              | $0.500 per M input tokens <br/> $1.500 per M output tokens                                        | 45455 neurons per M input tokens <br/> 136364 neurons per M output tokens                                                |
 | @cf/moonshotai/kimi-k2.5                     | $0.600 per M input tokens <br/> $0.100 per M cached input tokens <br/> $3.000 per M output tokens | 54545 neurons per M input tokens <br/> 9091 neurons per M cached input tokens <br/> 272727 neurons per M output tokens   |
 | @cf/moonshotai/kimi-k2.6                     | $0.950 per M input tokens <br/> $0.160 per M cached input tokens <br/> $4.000 per M output tokens | 86364 neurons per M input tokens <br/> 14545 neurons per M cached input tokens <br/> 363636 neurons per M output tokens  |