Guozhen AIGlobal AI field notes and model intelligence

AI TOOL WORKBENCH

AI tools by workflow, not hype

This is a practical AI tool workbench, not a link directory. Filter by coding, agents, research, knowledge bases, local LLMs, creative work, or cost planning before opening a guide or calculator.

8

tool comparison guides

7

practical calculators

7

workflow scenarios

Practical Stacks

Common AI tool stacks

Start from the workflow you are actually building. Each stack connects the guides, alternatives, rankings, and calculators that usually belong together.

Open model ranking
Filter by scenario
Common intents

Best current entry

Cursor alternatives

Updated from your filters and search query: Use Cursor when you live inside an IDE; use CLI agents when the task needs tests, terminal work, and multi-file changes.

Open

Decision Table

Compare by task

If you do not know which tool name to search, start from the job. Each row gives the best first page, why it matters, and what to watch before choosing.

All
TaskStart withWhyWatch outOpen
Code, fix bugs, change a repo
CodingAgents
Cursor alternatives + Claude Code guideFirst decide whether you need IDE completion, a repo-level agent, or terminal work with tests.Company code, private repos, and automated commits require data-policy and review checks.Compare coding tools
Research, sources, reports
ResearchAgents
Perplexity vs ChatGPTSource search and deep synthesis are different jobs; separating them makes work easier to audit.Keep source links for important claims instead of copying model summaries.Choose search flow
Private document QA / RAG
Knowledge
RAG chunk size calculatorKnowledge-base failures often come from chunking, overlap, and retrieval count, not only the model.Test on a small set of real documents before choosing the vector database or model.Calculate chunks
Local deployment or private AI
Local LLMCost
Local LLM GPU fit checkerCheck VRAM and quantization feasibility before downloading models or building a service.Local does not mean free; hardware, latency, maintenance, and access control still matter.Check GPU fit
Slides, images, articles, course material
CreativeResearch
Best AI presentation toolsContent production should separate research, structure, visuals, and export quality.For commercial use, check image rights, fonts, brand rules, and export quality.Choose content tools
Ship an AI product feature
CostResearch
AI API cost calculator + model rankingBefore launch, compare capability, cost, latency, context, failure recovery, and data policy together.Do not ship the leaderboard #1 by default; estimate monthly cost from real traffic.Estimate cost
Choose between major models
ResearchLocal LLM
Composite model rankingUse the weighted ranking to shortlist, then choose by writing, coding, RAG, or local deployment.A single leaderboard rarely represents your task; check price and constraints.Open ranking

Workflow Recipes

Start from real work

Each path turns the library into a practical sequence: decide, compare, then calculate.

All

Current results

15 useful entries

Filtered by scenario, keyword, and type
Coding
Guides

Cursor alternatives

Compare Cursor with Claude Code, Codex CLI, Continue, Windsurf, and repo-aware coding workflows.

Decision hint

Use Cursor when you live inside an IDE; use CLI agents when the task needs tests, terminal work, and multi-file changes.

Role
Daily engineering
Effort
Fast setup
codingbug fixingIDEalternatives
Best for: Daily coding, frontend work, bug fixing, and repo-level refactors
Open
Agents
Guides

Manus alternatives

Choose between general agents, browser agents, workflow automation, MCP assistants, and custom internal agents.

Decision hint

Open-ended agents are useful, but reliable work still needs planning, source checks, and human review.

Role
Task agents
Effort
Needs review
agentsresearchautomationoffice
Best for: Research, data collection, report generation, and repeated office workflows
Open
Coding
Guides

Claude Code guide

A practical path from chat-style coding help to repository-level collaboration, tests, and reviewable changes.

Decision hint

Best when you can give clear task boundaries, run tests, and review the diff before shipping.

Role
Engineering agent
Effort
CLI required
Claude Codeterminalrepotests
Best for: Engineers who want an AI agent inside the real development loop
Open
Local LLM
Guides

Gemini CLI guide

Use CLI-based AI for reading files, summarizing folders, drafting scripts, and repeatable terminal work.

Decision hint

Use it when the problem is bigger than a chat box and you want AI inside a file or terminal workflow.

Role
Large context
Effort
CLI workflow
GeminiCLIlong contextbatch work
Best for: Large folders, research materials, codebase orientation, and batch text processing
Open
Research
Guides

Perplexity vs ChatGPT

Choose between source-heavy search, deep reasoning, writing assistance, and mixed research workflows.

Decision hint

Use Perplexity to find sources; use ChatGPT to reason, draft, rewrite, and turn research into work.

Role
Research flow
Effort
Low setup
searchresearchsourceswriting
Best for: Research, source checking, market scans, and knowledge synthesis
Open
Knowledge
Guides

Notion AI alternatives

Compare Notion AI with local notes, team docs, private knowledge bases, and AI-assisted knowledge systems.

Decision hint

Pick the tool that already matches where your knowledge lives; migration cost is often larger than the AI feature gap.

Role
Knowledge work
Effort
Migration matters
knowledge basenotesteam docsalternatives
Best for: Notes, meeting summaries, internal knowledge bases, and personal research systems
Open
Creative
Guides

Best AI presentation tools

Use AI to create slide structure and first drafts while checking narrative, data, style, and export quality.

Decision hint

Use AI for the first draft, then manually fix story, data, visual hierarchy, and export quality.

Role
Content production
Effort
Needs editing
slidespresentationsclassespitch
Best for: Business decks, course slides, product demos, and investor pitches
Open
Creative
Guides

Free AI image generators

Compare free AI image tools by quota, commercial terms, prompt control, style stability, and local generation needs.

Decision hint

Free tools are great for exploration; commercial use needs license, consistency, and export checks.

Role
Visual creation
Effort
Check rights
imagesposterscoversfree
Best for: Article covers, thumbnails, concept visuals, and quick visual exploration
Open
Cost
Tools

AI API cost calculator

Estimate per-call, daily, and monthly AI API costs before a workflow goes live.

Decision hint

Use before shipping any AI feature with repeated calls.

Role
Pre-launch
Effort
Enter numbers
costAPIbudget
Best for: API products, RAG apps, customer support bots, and content generation
Open
Local LLM
Tools

Context window comparator

Translate tokens into pages, words, and rough document scale before choosing a model.

Decision hint

Use when the question is whether your material fits into the model at all.

Role
Long context
Effort
Scale estimate
contexttokenslong docs
Best for: Long document QA, paper summaries, codebase reading, and contract analysis
Open
Research
Tools

Model selector

Choose models by writing, coding, RAG, local deployment, image, and video scenarios.

Decision hint

Start here when the model list is overwhelming.

Role
Model choice
Effort
Scenario based
modelswritingcodinglocal
Best for: People choosing between ChatGPT, Claude, Gemini, DeepSeek, and local models
Open
Local LLM
Tools

Local LLM GPU fit checker

Estimate whether a model can fit your GPU memory under common quantization choices.

Decision hint

Use before downloading a model that may not fit your machine.

Role
Local deploy
Effort
VRAM estimate
GPUOllamalocal LLM
Best for: Ollama, vLLM, private knowledge bases, and local deployment
Open
Creative
Tools

Prompt generator

Turn goals, materials, tone, and output format into a usable prompt template.

Decision hint

Use when you want repeatable outputs instead of improvising prompts every time.

Role
Reusable work
Effort
Fill goals
promptwritingsummarytemplate
Best for: Writing, summaries, analysis, code review, and report generation
Open
Agents
Tools

Agent stack selector

Compare Dify, n8n, LangGraph, MCP, and custom agent stacks by workflow needs.

Decision hint

Use when you know the workflow but not the stack.

Role
Stack choice
Effort
Map workflow
agentDifyn8nMCP
Best for: Choosing Dify, Coze, n8n, LangGraph, MCP, or custom agents
Open
Knowledge
Tools

RAG chunk size calculator

Pick chunk size, overlap, and retrieval count based on document type and context window.

Decision hint

Use before blaming the model for a retrieval problem.

Role
RAG tuning
Effort
Chunk estimate
RAGchunkknowledge base
Best for: Knowledge bases, enterprise docs, support docs, and technical search
Open

Decision Matrix

How to choose by task

Start from the job, then choose a guide, alternative list, or calculator.

Code / fix bugs

Start with Cursor alternatives, then Claude Code for repo-level work.

Research / sources

Start with Perplexity vs ChatGPT, then use agent tools for repeatable research.

Knowledge base / RAG

Use the RAG chunk calculator before tuning retrieval or blaming the model.

Local deployment

Use the GPU fit checker, then compare context windows and open-weight options.

Slides / images

Compare presentation and image tools, then check licensing and export quality.

Ship a product feature

Estimate API cost first, then narrow the model list with the selector.

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