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GLM-Image vs GPT Image 2

Comparing GLM-Image and GPT Image 2 across benchmarks, pricing, and capabilities.

Zhipu AI · OpenAI · Updated for 2026

Which is better?

GLM-Image and GPT Image 2 trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

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 GPT Image 2

  • you want the most recent training data — it shipped Apr 2026

At a glance

The differences that matter most.

Benchmark wins
Input price
— / M
$5.00 / M
Output price
— / M
$30.00 / M
Context window
4,096
Released
Jan 2026
Apr 2026
License
MIT
Proprietary

Arena Performance

Human preference votes

License

Usage and distribution terms

GLM-Image is licensed under MIT, while GPT Image 2 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

GPT Image 2

Proprietary

Closed source

Release Timeline

When each model was launched

GLM-Image was released on 2026-01-14, while GPT Image 2 was released on 2026-04-21.

GPT Image 2 is 3 months newer than GLM-Image.

GLM-Image

Jan 14, 2026

7 months ago

GPT Image 2

Apr 21, 2026

4 months ago

3mo newer

Provider Availability

GLM-Image is available from ZAI, Fal. GPT Image 2 is available from OpenAI.

GLM-Image

z logo
Unknown Organization
fal logo
Fal

GPT Image 2

openai logo
OpenAI
Input Price:Input: $5.00/1MOutput Price:Output: $30.00/1M
* 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 GPT Image 2 side-by-side, then vote on the output you prefer.

GLM-Image
✓ Preferred
GPT Image 2
Open in Playground

FAQ

Common questions about GLM-Image vs GPT Image 2.

Which is better, GLM-Image or GPT Image 2?

GLM-Image (Zhipu AI) and GPT Image 2 (OpenAI) 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 GPT Image 2 in benchmarks?

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

What are the context window sizes for GLM-Image and GPT Image 2?

GLM-Image supports 4K tokens and GPT Image 2 supports an unknown number of 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 GPT Image 2?

Key differences include multimodal support (no vs yes), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes GLM-Image and GPT Image 2?

GLM-Image is developed by Zhipu AI and GPT Image 2 is developed by OpenAI.