GLM 5.2 vs ChatGPT
Zhipu AI's GLM-5.2 — the top open-weight coding model of mid-2026. A ~750B sparse MoE (≈40B active) under an MIT license, with a 1-million-token context window and benchmarks (81.0 Terminal-Bench, 62.1 SWE-Bench Pro) sitting just behind Claude Opus 4.8.
🧠 Expert verdict
Our expert verdict: ChatGPT is the stronger all-round choice, scoring 4.9/5 versus 4.6/5 for GLM 5.2, and it stands out for "Now runs GPT-5.6 (free tier included)". Choose ChatGPT if you want the best writing tool overall, especially for writing & editing; pick GLM 5.2 if "Top open-weight coding model (81.0 Terminal-Bench)" matters more for your workflow.
GLM 5.2
Zhipu AI's GLM-5.2 — the top open-weight coding model of mid-2026. A ~750B sparse MoE (≈40B active) under an MIT license, with a 1-million-token context window and benchmarks (81.0 Terminal-Bench, 62.1 SWE-Bench Pro) sitting just behind Claude Opus 4.8.
ChatGPT
OpenAI's flagship assistant, now powered by GPT-5.6 (the Sol / Terra / Luna family, GA July 2026). The free tier defaults to GPT-5.6 with GPT-5.5 still available. Text, coding, reasoning, image generation, voice and a ChatGPT Work app — the largest all-in-one AI ecosystem.
GLM 5.2
✅ Pros
- +Top open-weight coding model (81.0 Terminal-Bench)
- +Huge 1M-token context window
- +Permissive MIT license for commercial use
- +Beats GPT-5.5 on cost (about 1/6th)
- +Two reasoning modes (High / Max)
❌ Cons
- −~750B params heavy to self-host
- −Less brand recognition outside China
- −Smaller third-party tooling
- −Top mode trades speed for depth
ChatGPT
✅ Pros
- +Now runs GPT-5.6 (free tier included)
- +Largest ecosystem & plugins
- +Built-in image generation & voice
- +ChatGPT Work app for teams
- +Largest user base and integrations
❌ Cons
- −Pro/advanced tiers are pricey
- −Data privacy considerations
- −Can still hallucinate facts
- −Best features behind paid plans
🎯 Best for — GLM 5.2
🎯 Best for — ChatGPT
🏷️ Tags — GLM 5.2
🏷️ Tags — ChatGPT
Our Verdict
After comparing ratings, pricing and features, ChatGPT comes out ahead with a 4.9/5 rating. It is the better choice for most users.
Expert take on each tool
📌 GLM 5.2
GLM-5.2 is the best open-weight model for coding in mid-2026: top open Terminal-Bench score, a 1M-token context window and an MIT license, at roughly a sixth of GPT-5.5's cost. It is the standout choice for teams that want to build on and ship open weights without restrictive licensing.
📌 ChatGPT
ChatGPT remains the best all-in-one AI assistant in 2026, now powered by GPT-5.6 even on the free tier, with image generation, voice and the widest plugin ecosystem. Ideal for general use, content creation and coding — the safe default for most people.
❓ Frequently Asked Questions
Which is better: GLM 5.2 or ChatGPT?
ChatGPT has the higher user rating (4.9/5 vs 4.6/5), making it the stronger overall pick. That said, GLM 5.2 can still be the better fit depending on your budget and specific needs — see the full comparison above.
Is GLM 5.2 or ChatGPT cheaper?
GLM 5.2 (Open weights (MIT) / GLM Coding Plan from $10/mo) and ChatGPT (Free / $20/mo) sit at a similar price point. The best way to compare actual cost is to check each tool's plans for the specific features and usage limits you need.
Can I switch from GLM 5.2 to ChatGPT?
Yes — switching between GLM 5.2 and ChatGPT is usually straightforward since both are writing tools with similar core workflows. Most users can export their data and get started with ChatGPT within a day; just check ChatGPT's free plan before committing to a paid tier.