Short answer: There are three types of "free" Copilot alternatives — and they work very differently. Devin Desktop (formerly Windsurf) and Cursor have genuinely free tiers with no API key required (limited agent use, unlimited autocomplete). Cline, Kilo Code, and Aider are free extensions where you pay only for the AI model API you use — a typical light user spends $3–15/month, power users $50–200/month. Tabby is free forever if you self-host it. Below is every option mapped clearly by cost structure, with real usage estimates so you can pick the right one.
The Only Distinction That Actually Matters: Three Types of "Free"
Most "free Copilot alternative" articles lump everything together. Here's the split that determines what you actually pay:
| Type | How it works | Your real cost | Best for |
|---|---|---|---|
| Free tier (subscription) | Free plan with limited credits or requests. Model runs on provider's servers. | $0 within limits, upgrading costs $15–$20/mo | Students, side projects, light use |
| BYOK (Bring Your Own Key) | Extension is free; you supply your own API key and pay the model provider directly. | $0 setup + $3–$200/mo in API costs depending on usage and model | Developers who want control and transparency |
| Self-hosted / local | Runs entirely on your machine or your own server. No cloud dependency. | $0 forever (hardware costs only) | Privacy-first teams, air-gapped environments |
All Free Options at a Glance
| Tool | Free Type | IDE Support | Autocomplete | Agent Mode | Real Monthly Cost |
|---|---|---|---|---|---|
| Devin Desktop (formerly Windsurf) | Free tier | Own IDE | Unlimited | Limited Devin Local use | $0 (very light use) |
| Cursor | Free tier | Own IDE (VS Code fork) | 2,000/mo | 50 slow requests | $0 (trial-level use) |
| Cline | BYOK | VS Code + JetBrains (EA) | Via API | Unlimited | $3–$200/mo API |
| Kilo Code | BYOK | VS Code + JetBrains | Via API | Unlimited | $3–$200/mo API |
| Aider | BYOK or local | Terminal (CLI) | N/A | Unlimited | $0 (local) or $5–$20/mo API |
| Tabby | Self-hosted | VS Code, JetBrains, Neovim | Unlimited | Limited | $0 forever |
| FauxPilot | Self-hosted | Any (Copilot-compatible) | Unlimited | No | $0 forever |
Category 1: Truly Free Tiers (No API Key Required)
These tools have a free plan where the provider's servers handle the AI — no credit card or API key needed to start.
Devin Desktop Free (formerly Windsurf) — Best Truly Free Tier for Daily Use
Devin Desktop — the standalone AI IDE previously known as Windsurf, rebranded by Cognition AI on June 2, 2026 — has the most usable permanently free tier of any AI IDE in 2026. The free plan includes unlimited Tab autocomplete — AI-powered inline completions that trigger as you type — without consuming any credits. Agentic multi-file editing (now called Devin Local, replacing the retired Cascade) is limited on the free tier, which covers light sessions.
For developers who primarily want smart autocomplete and occasional AI chat rather than heavy agentic workflows, this free tier is genuinely workable long-term — not just a trial. Tab completions never expire or cap. The upgrade to Pro ($20/month) unlocks full Devin Local access and premium model access.
- Free includes: Unlimited Tab autocomplete · Limited Devin Local agent use · Base model chat
- Free doesn't include: Premium model access · Unlimited agent use · Full Fast Context
- IDE: Own full IDE (install from devin.ai — windsurf.com now redirects there)
- Best for: Developers who want a capable AI IDE with no upfront cost and primarily use autocomplete
- Note: The JetBrains plugin form of this tool kept the "Windsurf" branding and is a separate product from the standalone Devin Desktop editor
Cursor Free — Best for VS Code Users Testing an AI IDE
Cursor is a VS Code fork with deep AI integration. Its free tier is more limited than Devin Desktop's: 2,000 autocomplete completions per month and 50 slow agent requests. In practice this lasts roughly 2–3 days of active coding before you hit limits. The free tier is best understood as an extended trial rather than a sustainable free plan.
That said, Cursor is one of the strongest AI IDEs on the market for agentic coding, and even 50 slow requests give you a meaningful taste of what the $20/month Pro tier delivers. If you're evaluating whether to pay for Cursor, the free tier is the right way to start.
- Free includes: 2,000 completions/month · 50 slow requests · Tab autocomplete
- Free doesn't include: Fast requests · GPT-5 / Claude Sonnet access · Unlimited agent
- IDE: Own full IDE (VS Code fork)
- Best for: Evaluating Cursor before buying · Occasional side-project use
Category 2: BYOK Free (Free Extension, You Pay API Costs)
These tools are free to install and run, but you connect your own API key from Anthropic, OpenAI, Google, or similar providers. You pay those providers directly at their published API rates — no markup, no subscription to the tool itself. The extension cost is literally $0.
What BYOK actually costs: With a lightweight model like Claude Haiku or Gemini Flash, a typical developer spends $3–$15/month. With Claude Sonnet for every request, expect $20–$50/month. Heavy autonomous agent use with frontier models (Claude Opus, GPT-5) can reach $100–$200/month. You can also use local models via Ollama at $0/month — more on that in the next section.
Cline — Best BYOK Extension for Autonomous Agentic Coding
Cline is a free VS Code extension with 5M+ installs and 63,000+ GitHub stars — the most widely used BYOK coding agent in 2026. It functions as a full autonomous agent: it reads files, writes code, runs terminal commands, tests in a browser, and iterates until the task is done. You configure your API key (Anthropic, OpenAI, Google, OpenRouter, or local Ollama) in the settings panel.
Cline shows live token counts and session cost in real time — critical for staying in budget. It does not offer inline autocomplete (it's an agent, not an autocomplete tool), so many developers run Cline alongside Devin Desktop or Cursor for completions. Its JetBrains support is Early Access as of 2026.
- Cost: $0 extension + your API costs
- Typical monthly API bill: $5–$20 (light) · $50–$200 (heavy agentic use)
- IDE: VS Code + JetBrains (Early Access)
- Open source: Yes (Apache 2.0)
- Best for: Developers who want a powerful autonomous agent with full transparency over cost
Kilo Code — Best BYOK for JetBrains + Maximum Model Choice
Kilo Code is a BYOK extension with confirmed support for both VS Code and JetBrains, plus access to 500+ models via its zero-markup Kilo Gateway (built-in OpenRouter integration). You pay model providers at exact API rates with zero markup from Kilo Code itself.
The sheer model variety makes Kilo Code the best BYOK option for developers who actively optimize their cost-to-capability ratio — routing simple tasks to cheap models at fractions of a cent, and switching to Claude Opus for tasks that need it. The extension itself remains free, and it also supports local Ollama models for genuinely $0 total cost.
- Cost: $0 extension + API costs (500+ models via OpenRouter or direct API, or $0 with local Ollama)
- Typical monthly API bill: $0 (local) · $3–$100+ depending on model choice
- IDE: VS Code + JetBrains
- Best for: JetBrains users needing BYOK · Cost-optimizing power users · Developers running many different task types
Aider — Best BYOK for Terminal-Native Developers
Aider is a free CLI coding agent that works entirely in your terminal. It integrates with Git — every change Aider makes is automatically committed, so you can review, accept, or revert any AI-generated code. Supports all major model APIs and local models via Ollama.
Aider's terminal-native design means it works anywhere a shell does: SSH sessions, remote servers, CI pipelines. There's no IDE dependency. It's also one of the most cost-efficient BYOK agents because it uses smart context management (repo map) to keep token counts low, plus diff-based editing that cuts token consumption 5–10× versus tools that resend full file content.
- Cost: $0 CLI + API costs
- Typical monthly API bill: $0 (local) · $5–$20 (Claude Haiku / Gemini Flash)
- Works in: Any terminal (no IDE required)
- Open source: Yes
- Best for: Terminal-first developers · SSH / remote development · CI-integrated AI workflows
Category 3: Self-Hosted Free ($0 Forever, Runs Locally)
Tabby — Best Self-Hosted Copilot Replacement
Tabby is a fully open-source, self-hosted AI coding assistant that runs on your own server or machine. You deploy Tabby once, connect it to local models (StarCoder 2, CodeLlama, Qwen Coder), and every VS Code, JetBrains, or Neovim developer on your team gets AI autocomplete at $0 ongoing cost. No data ever leaves your infrastructure.
Tabby includes a web UI for model management, a completion API that mimics GitHub Copilot's protocol (so existing plugins work), and team features for shared context. The GPU requirement is the main constraint — a consumer RTX 3080 or better is recommended for acceptable latency.
- Cost: $0 (hardware/server costs only)
- IDE support: VS Code · All JetBrains IDEs · Neovim · Emacs
- Data leaves your machine: Never
- Requires: GPU server or capable local machine
- Best for: Privacy-first teams · Air-gapped environments · Organizations with GPU resources
FauxPilot — Best Drop-In Copilot Protocol Replacement
FauxPilot implements GitHub Copilot's API protocol locally, so any editor that already supports Copilot — via the standard Copilot extension — can talk to FauxPilot instead. It runs locally on GPU hardware using SalesForce CodeGen models.
The appeal is minimal configuration change: swap the API endpoint in your existing Copilot plugin, point it at FauxPilot, and your editor workflow stays the same. The model quality is below frontier models, but it costs nothing and sends no data externally.
- Cost: $0
- IDE support: Any editor with Copilot extension support
- Best for: Teams already using Copilot extensions who want a local self-hosted model drop-in
⚠️ Tools Discontinued Since This Article Was First Published
Continue.dev — Acquired by Cursor and Shut Down, June 2026
Continue was previously the top recommendation in this section for BYOK + JetBrains — full autocomplete, chat, and agent mode across VS Code and JetBrains, configured via YAML. Cursor acquired it in mid-June 2026, shipped a final v2.0.0 release on June 19, and set the GitHub repository to read-only. See our full write-up for the timeline and replacements — Kilo Code is now the closest BYOK option covering JetBrains.
Gemini Code Assist for Individuals — Free Tier Ended June 18, 2026
Gemini Code Assist had one of the most generous free tiers in AI coding (180,000 completions/month, 240 chat sessions/day) but Google shut it down on June 18, 2026 as part of migrating everything to its new platform, Google Antigravity. If you were on Gemini Code Assist free, you should have already migrated.
Amazon Q Developer — New Signups Blocked Since May 15, 2026
Amazon Q Developer blocked new free-tier signups on May 15, 2026. The product is being sunset in favor of Kiro, AWS's new AI IDE. Existing subscribers retain access, but new developers should evaluate Kiro, Cursor, or Devin Desktop instead.
Roo Code — Archived May 2026
Roo Code, a Cline fork with Custom Modes, was archived in May 2026 and is no longer maintained. Use Kilo Code instead — it's the actively maintained continuation of that lineage.
Real Monthly Cost Estimates by Usage Type
| Developer Profile | Best Free Option | Realistic Monthly Cost |
|---|---|---|
| Student / learning to code | Devin Desktop Free | $0 forever |
| Side project (a few hours/week) | Devin Desktop Free or Cursor Free | $0 |
| Full-time dev, mainly autocomplete | Devin Desktop Free (Tab unlimited) | $0 |
| Full-time dev, daily chat + light agent (JetBrains) | Kilo Code + Claude Haiku | $3–$10 API |
| Full-time dev, heavy agent use | Cline or Kilo Code + Claude Sonnet | $20–$60 API |
| Power user, frontier models all day | Cline + Claude Opus / GPT-5.x | $100–$200 API |
| Privacy / air-gapped requirement | Tabby (self-hosted) + local models | $0 ongoing |
| Terminal-first, budget-conscious | Aider + Ollama (local model) | $0 |
Who Should Use What: Decision Guide
- I want $0 forever and mainly need autocomplete → Devin Desktop Free (unlimited Tab completions, formerly Windsurf)
- I use JetBrains IDEs and want BYOK → Kilo Code (VS Code + JetBrains, 500+ models)
- I want a full autonomous agent with no subscription → Cline (BYOK, pay only API)
- I want the cheapest possible agentic AI → Aider + local Ollama model = literally $0
- I want different AI behavior for different tasks → Kilo Code (custom modes per task type, Roo Code's successor)
- I want to optimize model choice across 500+ options → Kilo Code (500+ models, zero markup)
- My code cannot leave my machine → Tabby (self-hosted, $0 forever)
- I already have Copilot extensions everywhere and want a local drop-in → FauxPilot
FAQ
Is there a completely free GitHub Copilot alternative with no limits?
Not with no limits at all — every option has some constraint. The closest are: Devin Desktop (unlimited Tab autocomplete forever, formerly Windsurf) and Tabby (self-hosted, unlimited completions if you have the hardware). BYOK tools like Kilo Code or Cline with a local Ollama model are also genuinely unlimited at $0 cost, but require a capable machine to run the local model.
What's the difference between BYOK and truly free?
BYOK (Bring Your Own Key) means the extension itself is free, but you pay the AI model provider (Anthropic, OpenAI, Google) directly for your usage. "Truly free" means the provider covers the model costs up to a limit — no API key or billing account required. BYOK tools give you more control but require you to manage an API account. See our full BYOK explainer for more.
Can I use Cline or Kilo Code with a free model?
Yes. Both support local model servers via Ollama. You download a model (like Qwen Coder 2.5 or DeepSeek Coder V3) and run it locally — the extension connects to your local model server with no external API calls. This makes your coding AI truly free. Trade-off: local models are slower and less capable than frontier models like Claude Sonnet.
How much does Cline cost per month on average?
It depends entirely on your model and usage. With Claude Haiku for most requests and Sonnet for complex tasks, a typical developer spends $5–$15/month. Full-time heavy agentic use with Claude Sonnet consistently runs $50–$100/month. Using local Ollama models costs $0/month. Cline shows your running cost in the extension — you always know exactly what each session is spending.
What happened to Continue.dev?
Cursor acquired it in mid-June 2026 and shut it down — final release June 19, 2026, GitHub repository read-only, no further updates. It used to be this guide's top recommendation for free BYOK JetBrains support. See our full write-up for the timeline and the best current replacements.
What happened to Windsurf's free tier?
It still exists, under a new name. Cognition AI rebranded the standalone Windsurf IDE to Devin Desktop on June 2, 2026. The free tier's unlimited Tab autocomplete carried over unchanged. Cascade, the old agent name, was retired July 1, 2026 in favor of Devin Local. See our July 2026 roundup for the full rebrand story.
Do I need a powerful computer to use Tabby or FauxPilot?
Yes. Self-hosted AI coding assistants run local inference and require a NVIDIA GPU (RTX 3080 or better recommended for Tabby). On CPU alone, completions are too slow for interactive use. If you don't have a suitable GPU, BYOK tools pointing at cloud model APIs are the more practical free option.
Bottom Line
The genuinely free AI coding landscape in 2026 is better than ever — but the word "free" is doing a lot of heavy lifting, and the landscape shifts fast: Continue.dev's shutdown in June 2026 is proof a top recommendation can disappear within weeks. Devin Desktop's free tier (formerly Windsurf) is the best starting point if you mainly want autocomplete at zero cost. Cline or Kilo Code are the right call if you want a powerful agent or multi-IDE coverage and are comfortable paying a few dollars per month directly for API usage. Tabby is the answer for teams where code security or air-gapped operation makes any cloud option a non-starter.
→ Browse the full directory to filter all 89 Copilot alternatives by price, license type, IDE support, and BYOK availability.