BigModel

Zhipu AI's platform for GLM models and APIs

About BigModel

BigModel is Zhipu AI's open platform for building with its GLM family of large language models. Developers register for an API key and call chat, vision, image and video models through an OpenAI-compatible interface, with model fine-tuning, knowledge bases, agent tooling and a coding-plan subscription also offered. Several Flash-series models are documented as free, while flagship models are billed per token.

BigModel website preview

Live preview of bigmodel.cn via the WordPress mShots service — it can take a few seconds to generate on a first visit.

BigModel: strengths & things to check

Strengths

Free tier available — you can start without paying (freemium model).
Covers llm, api, glm, developer platform — see the focus areas listed in its key facts.
Has 6 close alternatives in the same category on this page, so switching or comparing is easy.

Things to check

The full feature set sits behind a paid plan — check which limits the free tier carries on the official site before committing.
Current plan prices are not listed here (they change too often to print reliably) — confirm the exact price on the official site.
It is one of 225 tools in the AI Chat & Assistants category here — compare it against the alternatives below before you commit.

Derived from this listing's own data (pricing model, focus areas and category) — not a hands-on review score.

BigModel pricing

Pricing model	Freemium — a free tier lets you start, and paid plans are available if you need more.
Free access	Yes — free tier, paid upgrades available
Current plan prices	Listed on the official site — prices change, so this directory links out instead of printing a number that may already be stale.
Official site	bigmodel.cn

BigModel key facts

Category: AI Chat & Assistants
Pricing: Freemium — a free tier lets you start, and paid plans are available if you need more.
Focus areas: llm, api, glm, developer platform
Official site: bigmodel.cn

BigModel FAQ

How much does BigModel cost?

Freemium — a free tier lets you start, and paid plans are available if you need more. Current plans and prices are listed on the official site (bigmodel.cn).

What is BigModel used for?

Zhipu AI's platform for GLM models and APIs Its focus areas in the AI Chat & Assistants category: llm, api, glm, developer platform.

Where can I try BigModel?

On its official site, bigmodel.cn — the Visit Official Site button above goes straight there.

BigModel vs alternatives

	BigModel	Mistral AI	ChatGPT	Claude
Pricing	Freemium — a free tier lets you start, and paid plans are available if you need more.	Freemium — a free tier lets you start, and paid plans are available if you need more.	Freemium — a free tier lets you start, and paid plans are available if you need more.	Freemium — a free tier lets you start, and paid plans are available if you need more.
Focus areas	llm, api, glm, developer platform	llm, open models, api	chatbot, ai assistant, llm	chatbot, ai assistant, llm
Official site	bigmodel.cn	mistral.ai	chatgpt.com	claude.ai
Directory status	Listed	Listed	Featured listing	Featured listing

Side-by-side from each listing's own directory data. Full alternative cards are below.

About the AI Chat & Assistants category

Conversational AI assistants for writing, coding, research, and everyday questions. The AI Chat & Assistants category on Tools Hub currently lists 225 tools. Alongside BigModel, it includes DoaCam, Aidbase, Netus AI, LogicBalls.

FreemiumAI Chat & Assistantsllmapiglmdeveloper-platform

Alternatives to BigModel

Tools in the same AI Chat & Assistants category that share focus areas with BigModel — worth comparing before you commit:

AI Chat & Assistants

Mistral AI

Frontier open models you own, plus Studio and Vibe

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ChatGPT

The world's most popular AI chatbot.

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Claude

Anthropic's thoughtful AI assistant for writing, coding, and reasoning.

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1minAI

Free all-in-one AI app for text, image, audio and video — your AI super app

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Arena AI

The official AI ranking and LLM leaderboard

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ChatBotKit

Developer-friendly platform for building AI chat bots

Freemiumchatbot-builderapidevelopers

More in AI Chat & Assistants

Comparing tools in the AI Chat & Assistants category? These related listings are worth a look: DoaCam — Free 3D AI companions you can video call in your browser; Aidbase — AI-powered support for your SaaS startup; Netus AI — Humanize AI text, detect it, and chat with multiple models.