ChatGPT vs GLM
Head-to-Head Performance Audit
ChatGPT
OpenAIOpenAI's versatile AI assistant with image generation, voice mode, and a vast plugin ecosystem
Full Audit →
Intelligence Fingerprint
GPT-5.5 (xhigh)
GPT-5.5 (xhigh) by OpenAI. Optimized for high intelligence.
GLM-5.1 (Reasoning)
GLM-5.1 (Reasoning) by Z AI. Optimized for high intelligence.
Competitive Edge
ChatGPT Verdict
Key Strengths
- Image generation built in
- Voice mode
- Largest plugin ecosystem
- Deep Microsoft 365 integration
Limitations
- Ads on Free and Go tiers
- Higher hallucination rate vs Claude
GLM Verdict
Key Strengths
- 94.6% of Claude coding performance
- 28% improvement in single update
- Open-source options
- Competitive pricing
Limitations
- China-based service
- Smaller community
- Less general capability
Where to Choose Which?
Select ChatGPT for:
- Creative work
- Image generation
- Microsoft 365 users
- Plugin-heavy workflows
Select GLM for:
- Coding tasks
- Chinese developers
- Budget-conscious teams
- SWE-Bench style problems
Frequently Asked Questions
Is ChatGPT better than GLM?
Based on our benchmark analysis, ChatGPT scores higher on average across key metrics (SWE-Bench, GPQA Diamond, ARC-AGI-2) with a composite average of 75.8% vs 61.0%. However, GLM may still be the better choice depending on your specific use case and budget.
Which is better for coding, ChatGPT or GLM?
ChatGPT scores 80.1% on SWE-Bench Verified compared to GLM's 77.8%. SWE-Bench measures real-world GitHub issue resolution, making it the most reliable coding benchmark. ChatGPT is the stronger choice for developers.
How does ChatGPT pricing compare to GLM?
ChatGPT starts at Free (freemium) while GLM starts at Free (freemium). Both require paid subscriptions for full access.
When should I choose ChatGPT over GLM?
Choose ChatGPT when you need Creative work or Image generation. Choose GLM when your priority is Coding tasks or Chinese developers. Both tools serve different strengths depending on your workflow.