GLM vs Windsurf
Head-to-Head Performance Audit
Intelligence Fingerprint
GLM-5.1 (Reasoning)
GLM-5.1 (Reasoning) by Z AI. Optimized for high intelligence.
Competitive Edge
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
Windsurf Verdict
Key Strengths
- Extremely fast context indexing
- Cascade autonomous agent modes
- Personalized developer memory
- Native MCP integration
Limitations
- Newer ecosystem than VS Code
- Closed source agent engine
Where to Choose Which?
Select GLM for:
- Coding tasks
- Chinese developers
- Budget-conscious teams
- SWE-Bench style problems
Select Windsurf for:
- "Flow-state" coding
- Large codebase exploration
- Speed-focused developers
Frequently Asked Questions
Is GLM better than Windsurf?
Based on our benchmark analysis, GLM scores higher on average across key metrics (SWE-Bench, GPQA Diamond, ARC-AGI-2) with a composite average of 61.0% vs 60.0%. However, Windsurf may still be the better choice depending on your specific use case and budget.
Which is better for coding, GLM or Windsurf?
GLM scores 77.8% on SWE-Bench Verified compared to Windsurf's 65%. SWE-Bench measures real-world GitHub issue resolution, making it the most reliable coding benchmark. GLM is the stronger choice for developers.
How does GLM pricing compare to Windsurf?
GLM starts at Free (freemium) while Windsurf starts at Free (freemium). Both require paid subscriptions for full access.
When should I choose GLM over Windsurf?
Choose GLM when you need Coding tasks or Chinese developers. Choose Windsurf when your priority is "Flow-state" coding or Large codebase exploration. Both tools serve different strengths depending on your workflow.