GLM 5.3 (batch)

Z.ai· released 18 Aug 2026

z-ai/glm-5.3:batch

Input / 1M tokens: $0.45
Output / 1M tokens: $2

Context window1M tokens

Longest answer: 131K tokens

reads textopen weightstool callingreasoning

About

GLM 5.3 (batch) is a Z.ai text reasoning model with tool support and open weights. It accepts text and returns text. Its context window is 1,048,576 tokens, and its maximum output is 131,072 tokens. The listed rates are USD 0.45 per 1M input tokens and USD 2 per 1M output tokens. The summary describes it as designed for complex software engineering and long-horizon agent tasks. Its model ID is z-ai/glm-5.3:batch, and its Hugging Face ID is zai-org/GLM-5.3. The listed release date is 2026-08-18. The model's text-only input and output, long context, reasoning, and tools define the listed scope for teams considering it in engineering or agent workflows. Open weights are also listed for this model.

Who it is for

It suits teams working on complex software engineering or long-running agent tasks that use text, reasoning, and tools. Open weights may also matter to builders selecting a model for their stack.

What is good

Open weights are listed
Tools and reasoning are supported
1,048,576-token context window
Maximum output is 131,072 tokens

What to know first

Accepts text input only
Output costs USD 2 per 1M tokens

Verdict

GLM 5.3 (batch) offers tools, reasoning, open weights, and a context window exceeding one million tokens for text workflows. Its listed rates are USD 0.45 per 1M input tokens and USD 2 per 1M output tokens.

Details

Lab: Z.aiopenrouter.ai · 3 Oct 2026
Context: 1,049Kopenrouter.ai · 3 Oct 2026
Input price: $0.45 / 1Mopenrouter.ai · 3 Oct 2026
Output price: $2 / 1Mopenrouter.ai · 3 Oct 2026
Max output: 131,072 tokensopenrouter.ai · 3 Oct 2026
Inputs: textopenrouter.ai · 3 Oct 2026
Open weights: Yesopenrouter.ai · 3 Oct 2026

More newest models

See the list

Ling 3.1 Flash ctx262KinFreeoutFree inclusionAI Apodex 1.1 Mini (free) ctx262KinFreeoutFree Apodex Pareto 26.10 Preview ctx1,049Kin$0.8 / 1Mout$3.2 / 1M unbiased GPT-6.1 Sol ctx1,050Kin$2 / 1Mout$10 / 1M OpenAI GPT-6.1 Sol Pro ctx1,050Kin$2 / 1Mout$10 / 1M OpenAI Claude Sonnet 5.5 ctx1,000Kin$2 / 1Mout$10 / 1M Anthropic

Listed on Inferse

Newest Models in 2026466 listed
Longest-Context Models in 2026466 listed
Cheapest Language Models in 2026437 listed
Models with Tool Calling in 2026395 listed
Reasoning Models in 2026332 listed
Open-Weight Models in 2026178 listed
Z.ai Models: Pricing per 1M Tokens and Context (2026)20 listed

Sources

openrouter.ai/z-ai/glm-5.3:batch· checked 3 Oct 2026