ai coding agents · comparison
Best AI coding agents (2026)
AI coding agents range from in-editor autocomplete to fully autonomous engineers that open PRs. Pricing splits between flat per-seat (predictable) and usage/credit-based (scales with how hard the agent works). Below, each tool's real cost and autonomy level are decoded and dated.
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CursorAI coding / autonomous…
Cognition Devinautonomous coding
GitHub Copilotin-IDE coding
Blitzyenterprise autonomous…// scraped weekly · every cell carries source + date · volatile cells flagged verify live · scroll sideways on small screens
| tool | best for | pricing model | entry price | free tier | self-host | mcp | |
|---|---|---|---|---|---|---|---|
| Cursor | AI coding / autonomous PRs | per-seat subscription + included usage pool, then token-based overage | from $20/mo (Pro)verify live | Yes, Hobby plan at $0, no card. Limited Agent requests and Tab completions | No | Both | Visit → |
| Cognition Devin | autonomous coding | base subscription + usage credits | from $20/mo (Pro) + usage overageverify live | Yes. $0/mo plan with limited Devin usage, plus Devin Review and DeepWiki | No | Both | Visit → |
| GitHub Copilot | in-IDE coding | per-seat + usage credits | from $10/mo (Pro)verify live | Free plan: 2,000 completions + 50 agent/chat requests/mo, no card | No | Both | Visit → |
| Blitzy | enterprise autonomous coding at scale | Tiered subscription plus usage-based (per-line-of-code) for enterprise; largely sales-led/custom | Free (tech-spec generation with a work email)verify live | Yes, free spec generation with a work email, plus a 7-day trial | Yes | None | Visit → |
// scraped weekly · every cell carries source + date · volatile cells flagged verify live
Cursor
AI coding / autonomous PRs Cognition Devin
autonomous coding GitHub Copilot
in-IDE coding Blitzy
enterprise autonomous coding at scaleReal cost, decoded
The catch each tool's pricing hides.
Cursor$20/mo (Pro)The $20/mo "Pro" price is not what you actually spend. Since the June 2025 repricing, the subscription only buys $20 of frontier-model usage; selecting Claude/GPT/Gemini burns that pool at raw provider API rates and then bills overage in arrears. Only "Auto" mode is unlimited. Teams seats include the same $20 of usage per user, so a team of intensive coders can rack up large on-demand bills well past the per-seat fee. Full Cursor pricing →
Cognition Devin$20/mo (Pro) + usage overageThe $20/$80 sticker price is just a base subscription with an included usage quota. The real cost is consumption-based: once you exhaust the quota, every additional chunk of active work is billed pay-as-you-go (the ACU model, ~$2.25/ACU ≈ $9/active hour historically). Auto-reload of credits is on by default so spend can run silently past the base fee. ACUs are consumed by the active work Devin does, not by wall-clock or idle time (it auto-sleeps when waiting), so a session that sits idle is cheap but a busy one stacks credits fast. Full Cognition Devin pricing →
GitHub Copilot$10/mo (Pro)Billing changed on June 1, 2026: flat "premium request" counting is gone, replaced by token-metered AI Credits priced at each model's real API rate, so heavy use of expensive models (Claude Opus, GPT-5) can burn through your included pool far faster than the old fixed-request model suggested, and the old cheaper-model "fallback" when you ran out is being removed, so once credits are spent work simply stops unless you allow overage at published rates. Code completions stay free, but chat, agent mode, and code review all meter tokens (including cached and output tokens), and Copilot code review also eats GitHub Actions minutes. Also, since April 20, 2026, new sign-ups for the Pro, Pro+, and Student individual plans were paused, and Opus models were pulled from Pro and now require Pro+ or higher. Full GitHub Copilot pricing →
BlitzyFree (tech-spec generation with a work email)This is not a per-seat IDE copilot, it is a six-to-seven-figure, multi-year enterprise commitment. The headline "free" tier only generates specs; real code generation lives behind sales-led, usage-based LOC pricing (Enterprise from ~$500K/yr on a 36-month term, with overage LOC at ~$0.50 each), and even the pilots are paid ($50K to $250K). Dollar amounts come from reviews and secondary sources, not a public price list, so treat them as directional and confirm in the sales process. Full Blitzy pricing →
FAQ
What is the best AI coding agent?
For day-to-day in-editor work, Cursor and GitHub Copilot lead on speed and integration at flat per-seat pricing. For autonomous, end-to-end tasks (issue → PR), Cognition Devin is the most capable but priced for usage. Open-source agents are cheapest if you bring your own model.
How much do AI coding agents cost?
In-editor agents (Cursor, Copilot) are ~$10–40/mo per seat. Autonomous agents like Devin are usage/credit-based and can run far higher depending on workload — verify the current rate on the vendor page.
Are there free or open-source AI coding agents?
Yes — several open-source coding agents let you bring your own API key and pay only model costs. They are the cheapest option but require more setup than a managed tool.