Z.ai (ChatGLM)
Z.ai is Zhipu AI's chat and developer platform built on the GLM model family (formerly ChatGLM), and one of the fastest-moving labs of 2026. Basic chat on GLM Flash models is free and unlimited, while the flagship GLM-5.x reasoning models -- which rival Opus-class systems on agentic and coding tasks -- come via cheap coding-plan subscriptions (from ~$10/mo) or a very low-cost API. Developers get a strong, English, OpenAI-compatible platform with genuinely free Flash models, not just trial credits. The catch is China jurisdiction and PRC-aligned content rules, plus fast-shifting pricing.
Qwen Chat
Qwen Chat is Alibaba's free conversational app built on the Qwen model family, one of the most capable open-weight model lines in the world. The consumer app is permanently free with no obvious message caps -- web, mobile, and desktop -- which undercuts every Western rival on price. Developers can call the same models cheaply through Alibaba's DashScope API (OpenAI-compatible), though the always-free dev tier was replaced by a finite trial in 2026. Its main drawbacks are China hosting, a compliance concern for Western firms, and a consumer UX that trails ChatGPT.
Z.ai (ChatGLM) edges Qwen Chat on aggregate — 88 vs 87.
The best price-to-performance AI chat and API of 2026 -- free unlimited Flash chat and near-frontier paid models for cents, if your org is comfortable with a China-based provider. Qwen Chat still wins for buyers who prioritise free, unlimited-feeling consumer chat app. Both tools are independently scored — the right pick depends on which dimensions matter most for your workflow.
Side-by-side, every cell sourced.
Pricing pulled from each tool's public site. Scores follow the BigBang Score rubric — pricing transparency, free tier, API support, update frequency, unique factor, documentation, and community.
Use-case picks.
Cut through the spec sheet. Here's what we'd recommend depending on what matters most.
Pick Z.ai (ChatGLM) if…
You prioritise unlimited free chat plus genuinely free api models and flagship glm-5.x rivals opus-class at a fraction of the cost.
Pick Qwen Chat if…
You prioritise free, unlimited-feeling consumer chat app and best-in-class open-weight models to self-host.
Editorial pick
Z.ai (ChatGLM) wins our composite score (88/100). It edges ahead on aggregate — but the right tool depends on which dimensions matter most.
Related head-to-heads in AI chat.
Z.ai (ChatGLM) vs ChatGPT — AI chat
BigBang Scores 88/100 vs 91/100. Pricing, capabilities, and editorial verdict inside.
Z.ai (ChatGLM) vs Google Gemini — AI chat
BigBang Scores 88/100 vs 90/100. Pricing, capabilities, and editorial verdict inside.
Z.ai (ChatGLM) vs DeepSeek — AI chat
BigBang Scores 88/100 vs 88/100. Pricing, capabilities, and editorial verdict inside.
Z.ai (ChatGLM) vs Qwen Chat - frequently asked.
Direct answers tuned for AI search engines (ChatGPT, Perplexity, Claude) and Google's People Also Ask.
The short answer.
Z.ai (ChatGLM) wins on aggregate, but Qwen Chat pulls ahead on specific axes - the spec sheet above shows where each one earns its keep.