Freemium AI Coding Tools
Freemium AI coding tools, editors, agents, and MCP servers — 53 curated.
AgentOps
Observability for AI agents — session replay, cost and latency tracking, and debugging for multi-step runs.
Amp
Sourcegraph's agentic coding tool — a CLI and editor extensions tuned for frontier-model coding.
Google Antigravity
Google's agentic development platform — an agent-first IDE and Manager surface where multiple agents work across editor, terminal, and browser, on Gemini 3.
Assemblyai
Speech AI platform: promptable Universal-3 Pro STT, a flat-rate Voice Agent API, and speech understanding — summarization, sentiment, PII redaction.
Augment Code
AI coding assistant built for large, real-world codebases — a Context Engine that indexes the whole repo, with agents, chat, and completions in IDEs and a CLI.
Bolt
StackBlitz's in-browser AI agent that builds, runs, and deploys full-stack web apps in a WebContainer.
Braintrust
An end-to-end platform for evaluating, iterating on, and observing LLM apps, with a prompt playground.
Browserbase
Managed headless-browser infrastructure for AI agents and web automation — serverless cloud browsers with stealth, proxies, live view, and Playwright/Stagehand.
Cartesia
Real-time voice AI on state-space models — Sonic streaming TTS, Ink STT with native turn detection, and Line, a code-first voice-agent platform.
Coderabbit
An AI code reviewer that posts line-by-line feedback and summaries on every pull request.
Cohere Rerank
A hosted reranking API that reorders retrieved passages by true relevance to a query.
Context7
Upstash's MCP server that pulls up-to-date, version-specific library documentation into your agent's context — the cure for hallucinated APIs.
Cursor
An AI-first code editor built on VS Code with deep in-editor agent features, parallel agents, in-house Composer models, and a plugin marketplace.
Daytona
Sub-90ms agent sandboxes — isolated computers with snapshots, volumes, Git and LSP tools, on Linux, Windows, or Android; AGPL self-host or managed cloud.
Deepgram
A voice-AI platform with fast, accurate speech-to-text (Nova) and low-latency text-to-speech (Aura), plus a bundled Voice Agent API.
Devin
Cognition's autonomous AI software engineer that works in its own cloud workspace with an editor, terminal, and browser.
Dify
The visual platform for LLM apps and agentic workflows — canvas-built chatflows, RAG pipeline, agent nodes with 50+ tools, and LLMOps, self-hosted via Docker.
E2b
Open-source Firecracker-microVM sandboxes where AI agents safely run untrusted code — stateful interpreters, full Linux, pause/resume, desktop VMs.
ElevenLabs
A voice-AI platform for high-quality text-to-speech, voice cloning, dubbing, and real-time conversational agents, via API.
Exa
The search engine built for AIs — semantic web search, page contents, Websets, and research APIs, plus the ecosystem's most-used search MCP server.
fal
fal is a generative-media inference cloud for running image, video, and audio diffusion models fast — 1,000+ models, a simple API, and pay-per-use pricing.
Figma MCP
Figma's official MCP server — structured design context, variables, screenshots, and Code Connect mappings for agents, plus write-back to the canvas.
Firecrawl
The API to search, scrape, and crawl the web for AI — clean Markdown out of any site, LLM-powered extraction, and a first-class MCP server.
Fireworks AI
Fast production inference for open models — serverless and dedicated GPU deployments, fine-tuning, and an OpenAI-compatible API on the FireAttention engine.
Groq
GroqCloud runs open-weight LLMs on custom LPU hardware for very fast, low-latency inference through an OpenAI-compatible API.
Jina Reader
Prepend r.jina.ai/ to any URL and get LLM-ready markdown — JS rendering, PDFs and Office docs, image captioning, and s.jina.ai for read-the-results search.
Kilo Code
Open-source AI coding agent extension for VS Code and JetBrains, built as a superset of Roo Code and Cline, with bring-your-own-key and zero model markup.
LangSmith
LangChain's platform for tracing, evaluating, and monitoring LLM apps — framework-agnostic.
Letta
Stateful agents from the MemGPT creators — an Apache-2.0 server with self-editing memory, and Letta Code, the memory-first model-agnostic coding harness.
Livekit
Open-source realtime infrastructure — a WebRTC server plus the LiveKit Agents framework for production voice AI, with turn detection, telephony, and cloud.
LlamaParse
Hosted document-parsing API from LlamaIndex that turns complex PDFs — tables, charts, figures, handwriting — into clean, LLM-ready Markdown for RAG.
LM Studio
A desktop app for discovering, downloading, and running open-weight LLMs locally with a GUI and a local OpenAI-compatible server.
Lovable
An AI app builder that turns natural-language prompts into shippable full-stack web apps.
Modal
Serverless AI infrastructure in pure Python — GPU functions with sub-second cold starts, secure sandboxes for agent code, batch jobs, and per-second billing.
N8n
Fair-code workflow automation with native AI: a visual canvas plus code, 400+ integrations, and LangChain agent nodes; self-host free or cloud per-run.
Notion MCP
Notion's hosted MCP server — search the workspace, fetch and create pages and databases, and manage comments through Markdown-optimized agent tools.
OpenRouter
A hosted unified API to hundreds of models from many providers, with one key, one bill, and automatic fallbacks.
Pinecone
A fully managed, serverless vector database for similarity search and RAG — no nodes to run, indexes to tune, or infrastructure to operate.
Portkey
An AI gateway and LLMOps platform: route to many LLMs through one API with caching, retries, fallbacks, load balancing, guardrails, and full observability.
Qodo
A quality-first AI code review platform (ex-CodiumAI) — multi-agent PR review with your team's rules, plus IDE, CLI, and codebase-intelligence products.
Reducto
High-accuracy document ingestion API — parsing, agentic OCR, table and figure extraction, and splitting that turns messy PDFs into LLM-ready data for RAG.
Replicate
Run and deploy any open ML model — LLMs, image, video, audio — through one API with pay-per-second billing, and package your own with open-source Cog.
Replit Agent
Replit's AI agent that builds, runs, and deploys full-stack apps from a prompt inside the Replit cloud IDE.
Smithery
A registry and hosting platform for Model Context Protocol servers — discover, deploy, and connect MCP servers from one place.
Tavily
The web-access layer for agents — Search, Extract, Crawl, Map, and Research APIs purpose-built for LLMs, behind one key, with a hosted MCP server.
Together AI
A cloud for running, fine-tuning, and deploying open-source models (Llama, DeepSeek, Qwen) via an OpenAI-compatible API plus dedicated GPU endpoints.
Trae
Trae is an AI-native IDE from ByteDance — a VS Code-style editor with a built-in Builder agent and an autonomous SOLO mode that writes code across a project.
Unstructured
Open-source library plus hosted Platform/API that turns messy documents — PDF, HTML, docx, images, email — into clean, chunked JSON for LLMs and RAG.
V0
Vercel's generative UI builder that turns prompts into production-ready React, Next.js, and shadcn/ui apps.
Vercel Sandbox
Ephemeral Firecracker microVMs on Vercel for untrusted and AI-generated code — millisecond startup, Node and Python runtimes, persistent by default.
Voyage AI
Embedding and reranking models tuned for retrieval, now part of MongoDB.
Devin Desktop (formerly Windsurf)
An agentic IDE — formerly Windsurf, now Devin Desktop from Cognition AI — with flows that take multi-step actions across your codebase.
Zep
Agent memory on temporal knowledge graphs — Zep Cloud for sub-200ms context retrieval at enterprise scale, with Graphiti as its open-source graph engine.