In 2025, I and many friends in the AI circle spent over $10,000 testing more than 200 AI tools. Finally, we have painstakingly compiled this most detailed ultimate guide to AI tools. Over the past year, the AI circle has been fiercely competitive — many of the magic tools I recommended last year have been surpassed. So in 2026, I will clarify the truly worthwhile AI tools for you according to different scenarios.
Scene 1: In-Depth Research — Gemini 3.1 Pro
Gemini 3.1 Pro is the king of deep research. Its Deep Research feature automatically searches, organizes, and analyzes information, generating complete reports with citations. For example, a financial analysis of AI industry investments in 2025 — it automatically searched 200+ reports and compiled a 30,000-word report in 5 minutes. Context window: 1,000,000 tokens (equivalent to 20 books). Gemini 3.0 is almost completely free.
Scene 2: Long-Form Writing — Claude 4.6 Opus
Claude 4.6 Opus writes the most "un-AI-like" text in terms of fluency, logic, and emotional expression. For a 10,000-word palace drama novel opening, the character shaping and writing style were indistinguishable from human writing. $20/month — worth it for those who make a living from writing.
Scene 3: Daily Assistant — ChatGPT
ChatGPT with GPT-5.4 offers the most comprehensive capabilities with memory that remembers your previous conversations. $20/month. Free alternatives: Doubao, Tongyi Qianwen, DeepSeek.
Scene 4: AI Image Generation — Nano Banana Pro
Nano Banana Pro from Google DeepMind tops all AI image generation rankings. Quality rivals MidJourney, but its killer feature is precise inpainting: upload a photo, specify what to change, and it modifies only that region. Many designers canceled MidJourney after trying it. Free with Google account. Alternatives: Jiemeng/Doubao (ByteDance, high cost-performance), Flux (open-source, runs on 6GB VRAM).
Scene 5: AI Video — Seedance 2.0
Seedance 2.0 from ByteDance is the world's strongest AI video model — synchronized sound and picture, movie-level quality, physical laws that can be confused with reality. Alternatives: Conch (natural movement, ~$4-5 per 5-second video), Keling (good consistency for series with fixed characters).
Scene 6: AI Programming — Cursor / Claude Code / Codex
The AI programming field has formed a three-giant pattern:
- Cursor: No.1 for beginners — understands entire projects through dialogue, like a senior programmer working for you. $20/month.
- Claude Code: More aggressive automation, ideal for medium-to-large projects.
- Codex: OpenAI's terminal — often solves bugs Claude can't. Many veterans use all three: Cursor for daily, Claude Code for projects, Codex for tough bugs.
Dark horse: Google's Antigravity with large free quota. Domestic: Trae ($3 first month, then $10).
Scene 7: AI Knowledge Base — NotebookLM
NotebookLM from Google is the strongest AI knowledge base, bar none. Upload PDFs, web pages, YouTube videos, and audio — it auto-generates summaries, answers questions, and creates remarkably natural AI podcast discussions. Users report 100x efficiency gains. Completely free. Domestic alternative: Tencent's IMA Knowledge Base (better Chinese handling, WeChat mini-program integration, team collaboration).
Scene 8: AI Audio — ElevenLabs
ElevenLabs is the ceiling of AI audio — timbre naturalness has reached the level where it can't be distinguished from human speech. Supports voice cloning from a 1-minute recording. ~$35 for one hour of audio. Alternative: Minimax Audio (lots of free quota, dubbing + voice cloning).
Scene 9: AI Video Editing — Jianying / ChatCut
Jianying is no longer just editing software — it's an AI editing family bucket: AI digital humans, AI subtitles, auto video production, one-click background change, AI copy rewriting. Extremely beginner-friendly. ChatCut edits videos through natural language chat.
Scene 10: AI Digital Humans — HeyGen
HeyGen remains the best choice for digital human videos — natural effects, multi-language lip sync. Price dropped to $24/month. Ideal for training videos, marketing content, and product introductions on TikTok/Douyin.
Scene 11: AI Browser — Atlas / Dia / Comet / Sider
Atlas from OpenAI directly calls GPT capabilities — browse, summarize, and answer questions in one go. Alternatives: Dia or Comet (unique UI, free versions). Don't want to switch browsers? Install Sider plugin to add AI to Chrome.
Scene 12: AI Agent — Genspark
Genspark is the strongest general-purpose AI Agent — it doesn't just answer questions, it gets things done. Meeting minutes with action items, fact-checking against hallucinations, multi-step task decomposition. Example: "Research the top 10 most profitable overseas companies in 2025 and create a PPT" — 10x faster than manual work. Alternative: Manus (pioneer but more expensive).
The Four Ecosystem Camps of 2026
- Google ecosystem: Gemini, Nano Banana, NotebookLM — most free
- OpenAI ecosystem: ChatGPT 5.4, Atlas, Codex — ChatGPT Pro covers many scenarios
- ByteDance ecosystem: Doubao, Jianying, Jiemeng, Trae — free or ultra-low cost
- Alibaba ecosystem: Open-source LLMs + video models (Tongyi Wanxiang) — zero cost for self-hosters
Recommendation: If budget allows, dual Google + OpenAI support. Budget-limited? ByteDance family bucket. Want extreme savings? Alibaba open-source package.
常见问题
Which single tool gives the most value for $0?
NotebookLM. It's completely free, has no usage limits, and the productivity gain for research and learning is genuinely 100x for certain tasks. The AI podcast feature alone is worth trying — it turns any document into an engaging audio discussion. For coding, Cursor's free tier is also excellent for beginners.
Is it worth paying $20/month for multiple AI subscriptions?
It depends on your use case. For professionals who write daily (Claude Opus), code daily (Cursor), or do heavy research (Gemini), one $20/month subscription easily pays for itself in time savings. But the Google ecosystem (Gemini + Nano Banana + NotebookLM) covers research, images, and knowledge management for free — start there, then add paid tools for specific needs.
Are domestic Chinese AI tools catching up to Western ones?
In specific categories, yes. GLM-5.2 is competitive with GPT-5.5 on backend security coding. MiniMax M3 matches GPT-5.5 on 3D and multimodal tasks. ByteDance's Seedance 2.0 leads AI video globally. For general-purpose chat and reasoning, GPT-5.5 and Claude Opus 4.8 still hold an edge, but the gap is narrowing fast — especially considering domestic tools are often free or much cheaper.