# GLM-4.6

GLM-4.6 is an AI model released by Z.ai on Sep 30 2025. It has 355B parameters, a 200k context window and open weight. Tracked results include 68% on SWE-Bench Verified.

## Facts

| Field | Value |
| --- | --- |
| Model | GLM-4.6 |
| Developer | Z.ai |
| Release date | Tuesday, Sep 30 2025 |
| Licensing | Open Weight |
| Parameters | 355B |
| Context window | 200k |

## API pricing

All rates in USD per 1,000,000 tokens, pay-as-you-go.

| Tier | Input | Cached input | Output |
| --- | --- | --- | --- |
| Standard | $0.60 | $0.11 | $2.20 |

Verified October 19, 2026 against the first-party source: https://docs.z.ai/guides/overview/pricing

## Tracked benchmark scores

| Benchmark | Score | Source | What it measures |
| --- | --- | --- | --- |
| SWE-Bench Verified | 68% | Lab | Real coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. |

## About GLM-4.6

GLM-4.6 was introduced in September 2025 as an update to Z.ai’s reasoning and agent model line. Its context window expanded from GLM-4.5’s 128K tokens to 200K, while post-training targeted coding, tool use and writing.

The release supported using tools during reasoning and emphasized more efficient progress through agent tasks. Z.ai published downloadable weights under the MIT License as well as hosted access. Its model card documented benchmark and coding-agent evaluations, which describe the stated setup rather than identical performance across every framework.

## Questions and answers

### When was GLM-4.6 released?

GLM-4.6 was released by Z.ai on Tuesday, Sep 30 2025.

### Who made GLM-4.6?

GLM-4.6 was built by Z.ai. Chinese AI lab spun out of Tsinghua University (formerly Zhipu AI), building the open-weight GLM family. Rebranded internationally as Z.ai in 2025.

### How much does GLM-4.6 cost?

GLM-4.6 costs $0.60 per million input tokens and $2.20 per million output tokens through the Z.ai API. Cached input is $0.11 per million tokens. Rates are pay-as-you-go API prices verified against Z.ai's published pricing on October 19, 2026.

### What benchmark scores did GLM-4.6 get?

GLM-4.6 reports 1 tracked benchmark score — SWE-Bench Verified: 68%. Tracked scores may come from lab reports or independent benchmarks; source details accompany the benchmark data.

### What is the context window of GLM-4.6?

GLM-4.6 has a context window of 200k. Providers may specify separate input and output token limits.

### How many parameters does GLM-4.6 have?

GLM-4.6 is reported at 355B parameters.

### Is GLM-4.6 open source?

Partly. GLM-4.6 is an open-weight model: the trained weights are free to download and run locally or on your own infrastructure, but the training data and code are not fully released and the license may restrict some commercial uses. It is not open source in the strict sense.

### What came before and after GLM-4.6?

Z.ai's previous tracked release was GLM-4.5-Air on Jul 28 2025, 64 days earlier. It was followed by GLM-4.7 on Dec 22 2025.


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Canonical page: https://aireleasetracker.com/model/zai/glm-4.6
Site index: https://aireleasetracker.com/llms.txt
Source: AI Release Tracker (https://aireleasetracker.com). Most benchmark scores come from lab launch material; gathered results identify the leaderboard that published them.