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GLM-Image vs Grok Imagine Image Pro

Comparing GLM-Image and Grok Imagine Image Pro across benchmarks, pricing, and capabilities.

Zhipu AI · xAI · Updated for 2026

Which is better?

GLM-Image and Grok Imagine Image Pro trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

Grok Imagine Image Pro also accepts a larger context window (131,072 input tokens), making it the stronger choice for long documents and large codebases.

Based on current benchmark, pricing, and model metadata for 2026.

Choose GLM-Image

  • you need open weights you can self-host or fine-tune

Choose Grok Imagine Image Pro

  • you process long inputs — it offers a 131,072 token context window
  • you want the most recent training data — it shipped Feb 2026

At a glance

The differences that matter most.

GLM-Image
Zhipu AI
Grok Imagine Image Pro
xAI
Benchmark wins
—
—
Input price
— / M
— / M
Output price
— / M
— / M
Context window
4,096
131,072
Released
Jan 2026
Feb 2026
License
MIT
Proprietary

Arena Performance

Human preference votes

License

Usage and distribution terms

GLM-Image is licensed under MIT, while Grok Imagine Image Pro uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

GLM-Image

MIT

Open weights

Grok Imagine Image Pro

Proprietary

Closed source

Release Timeline

When each model was launched

GLM-Image was released on 2026-01-14, while Grok Imagine Image Pro was released on 2026-02-01.

Grok Imagine Image Pro is 1 month newer than GLM-Image.

GLM-Image

Jan 14, 2026

7 months ago

Grok Imagine Image Pro

Feb 1, 2026

6 months ago

2w newer

Provider Availability

GLM-Image is available from ZAI, Fal. Grok Imagine Image Pro is available from xAI.

GLM-Image

z logo
Unknown Organization
fal logo
Fal

Grok Imagine Image Pro

xai logo
xAI
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against GLM-Image and Grok Imagine Image Pro side-by-side, then vote on the output you prefer.

GLM-Image
✓ Preferred
Grok Imagine Image Pro
Open in Playground

FAQ

Common questions about GLM-Image vs Grok Imagine Image Pro.

Which is better, GLM-Image or Grok Imagine Image Pro?

GLM-Image (Zhipu AI) and Grok Imagine Image Pro (xAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does GLM-Image compare to Grok Imagine Image Pro in benchmarks?

GLM-Image scores LongText-Bench: 96.6%, CVTG-2K: 91.2%.

What are the context window sizes for GLM-Image and Grok Imagine Image Pro?

GLM-Image supports 4K tokens and Grok Imagine Image Pro supports 131K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GLM-Image and Grok Imagine Image Pro?

Key differences include context window (4K vs 131K), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes GLM-Image and Grok Imagine Image Pro?

GLM-Image is developed by Zhipu AI and Grok Imagine Image Pro is developed by xAI.

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