1. Major Global Web-Based Models

These are widely accessible models from major international tech companies, known for their robust performance and general-purpose capabilities.

OpenAI - ChatGPT (GPT-3.5)

As one of the most well-known conversational AIs, its free tier is excellent for a wide range of daily tasks, from content creation to code assistance.

Access URL: https://chat.openai.com
Free Usage Requirements: Requires registration and login with an OpenAI account (Email/Google/Microsoft/Apple supported).
Free Usage Limits:
- Model: Access to the GPT-3.5 model.
- Usage: No strict daily message count, but subject to rate limits during peak usage periods.
- Features: Does not include access to the more powerful GPT-4/GPT-4o models, DALL-E 3 image generation, advanced data analysis, web browsing, or custom GPTs.
Key Strengths: Well-rounded capabilities, user-friendly interface, and a mature ecosystem.

Google - Gemini (Gemini Pro)

Google's powerful competitor, which notably offers its very capable Gemini Pro model for free, with deep integration into the Google ecosystem.

Access URL: https://gemini.google.com
Free Usage Requirements: Requires login with a Google account.
Free Usage Limits:
- Model: Access to the Gemini Pro model.
- Usage: No explicit hard limits for standard chat, but governed by Google's "fair use" policy.
- Features: Does not include access to the top-tier Gemini Advanced model.
Key Strengths: Strong free model (Gemini Pro), excellent integration with Google services (Docs, Gmail, etc.).

Microsoft - Copilot

Microsoft's AI assistant, which stands out by providing free access to premium models like GPT-4 and GPT-4o, integrated with real-time web search.

Access URL: https://copilot.microsoft.com (also accessible via Bing, Edge sidebar, and Windows).
Free Usage Requirements: Limited use without login. Logging in with a Microsoft account unlocks significantly more conversations and features.
Free Usage Limits:
- Model: Free access to advanced models, including GPT-4 and GPT-4o.
- Usage: High daily conversation limits after login, sufficient for most users.
- Features: Includes free web search and DALL-E 3 image generation (with a "boost" or speed credit system).
Key Strengths: Provides free access to top-tier models, real-time web search capabilities.

Anthropic - Claude 3

Known for its sophisticated, safe, and ethical response style, Claude excels at handling and analyzing very long documents.

Access URL: https://claude.ai
Free Usage Requirements: Requires registration and login (Email/Google supported).
Free Usage Limits:
- Model: Access to the Claude 3 Sonnet or Haiku models.
- Usage: Free users have a message limit that resets every few hours. The limit is dynamic and depends on current system load. A typical user might get around 30-40 messages per day.
- Features: Does not include access to the most powerful Claude 3 Opus model. Message limits are significantly lower than the paid Pro version.
Key Strengths: Exceptional long-context window (up to 200K tokens), strong in academic writing, summarization, and code explanation.

2. Other Prominent & Regional Models

This list includes powerful models, many of which are from Chinese tech giants and have a strong focus on Chinese language and specific use cases.

Kimi Chat (Moonshot AI)

A standout model from China, renowned for its massive context window and document analysis capabilities.

Access URL: https://kimi.moonshot.cn
Free Usage Requirements: No registration required for unlimited web access.
Free Usage Limits: Very generous free tier for web use.
Key Strengths: Exceptional long-text processing (supports up to 200,000 Chinese characters), ideal for document analysis, summarization, and Q&A over large files.

DeepSeek

An open-source model with a powerful, publicly accessible web interface.

Access URL: https://www.deepseek.com
Free Usage Requirements: No registration needed for direct web use. API access requires an application but has a generous free quota.
Free Usage Limits: Generous free access on the web.
Key Strengths: Strong logical reasoning, supports parsing of large documents (up to 500 pages), and has outstanding code generation capabilities.

Baidu - ERNIE (Qianfan Platform)

Baidu's flagship model, available through its cloud platform with a focus on the Chinese market.

Access URL: https://cloud.baidu.com/product/wenxin
Free Usage Requirements: Requires account registration and real-name identity verification.
Free Usage Limits: The free tier for the ERNIE-Speed model is very generous, often around 300,000 tokens/minute via API.
Key Strengths: Highly optimized for Chinese language tasks, strong multi-task processing.

Tencent - Hunyuan

Tencent's versatile model, accessible via its cloud platform and integrated into its ecosystem.

Access URL: https://hunyuan.tencent.com
Free Usage Requirements: Requires login with a WeChat or QQ account.
Free Usage Limits: The Hunyuan-Lite model has a free tier that is typically limited by concurrent requests (e.g., 5 concurrent paths).
Key Strengths: Developer-friendly for small to medium-scale applications, good integration with the Tencent ecosystem.

ByteDance - Coze

A platform from ByteDance that allows users to build and deploy AI bots, offering access to powerful underlying models.

Access URL: https://www.coze.cn (for China) or https://www.coze.com (global)
Free Usage Requirements: Requires registration.
Free Usage Limits: High daily request limits (e.g., 3,000 requests/day).
Key Strengths: Focuses on combining function/API calls with text generation, making it great for creating specialized bots and agents.

iFlytek - Spark

A model from a leader in Chinese voice recognition and NLP.

Access URL: https://xinghuo.xfyun.cn
Free Usage Requirements: Requires a Chinese mobile number for registration.
Free Usage Limits: The free Spark-Lite model has no token limit but is rate-limited (e.g., 2 requests/second).
Key Strengths: Excellent for lightweight NLP tasks, especially in Chinese-language scenarios.

3. Developer-Focused & Local Deployment

Ollama

An open-source framework that allows developers to run powerful LLMs directly on their local machines.

Access URL: https://ollama.com
Free Usage Requirements: Completely free. Requires downloading the framework and desired open-source models (like Llama 3, Qwen, DeepSeek, etc.).
Free Usage Limits: Limited only by your local hardware (RAM, VRAM, CPU/GPU).
Key Strengths: Maximum privacy and data security as nothing leaves your machine. Highly customizable and ideal for developers building offline-capable applications.

Summary & Recommendations

Model Name	Access URL	Free Model	Registration Required?	Key Free Usage Limit	Standout Feature
ChatGPT	chat.openai.com	GPT-3.5	Yes	Cannot use latest models	Balanced capabilities, mature ecosystem
Google Gemini	gemini.google.com	Gemini Pro	Yes (Google Account)	Cannot use top-tier model	Strong free model, Google ecosystem integration
Microsoft Copilot	copilot.microsoft.com	GPT-4, GPT-4o	No (Better with login)	Image generation credits	Free access to top-tier models, web search
Anthropic Claude	claude.ai	Claude 3 Sonnet/Haiku	Yes	Message count limit	Excellent long-text processing
Perplexity AI	perplexity.ai	Proprietary/GPT-3.5	No (Better with login)	Limited "Pro" searches	Answers with citations, high accuracy
Kimi Chat	kimi.moonshot.cn	Proprietary	No	Very generous web use	Exceptional long-document analysis
DeepSeek	deepseek.com	DeepSeek-V2	No (Web)	Very generous web use	Strong logic and coding
Baidu ERNIE	cloud.baidu.com/product/wenxin	ERNIE-Speed	Yes (ID verification)	High token/minute rate limit	Optimized for Chinese language
Tencent Hunyuan	hunyuan.tencent.com	Hunyuan-Lite	Yes (WeChat/QQ)	Concurrent request limit	Good for app development
ByteDance Coze	coze.cn / coze.com	Proprietary	Yes	High daily request limit	Bot/agent creation, function calling
iFlytek Spark	xinghuo.xfyun.cn	Spark-Lite	Yes (CN mobile #)	Rate-limited (req/sec)	Strong in Chinese NLP
Ollama	ollama.com	Various Open Source	N/A (Local Install)	Limited by local hardware	Maximum privacy, developer control

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Free Use Large Language Models List 2025

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