Paid AI plans under $20 a month
Updated 2026-10-15. Official pricing pages only.
Quick answer
16 plans across 11 tools qualify. Cheapest: Gemini Google AI Plus at $4.99. Most expensive here: Windsurf (Devin) Pro at $20. Last checked 2026-10-15.
| Tool | Plan | Price / mo | Key limit |
|---|---|---|---|
| Gemini | Google AI Plus | $4.99 | 2x higher usage limits |
| ChatGPT | Go | $8 | More messages with tools |
| Codex | Go | $8 | Lightweight coding tasks |
| Cursor | Plus | $8 | Shared AI usage pool across Cursor and Grok |
| Grok | Plus | $8 | Shared AI usage pool (baseline) |
| GitHub Copilot | Pro | $10 | $15/mo GitHub AI Credits ($10 base + $5 flex) |
| Mistral Le Chat / Vibe | Pro | $14.99 | Fair usage limits |
| Perplexity | Pro | $17 | 4,000 bonus credits |
| Gemini | Google AI Pro | $19.99 | 4x higher usage limits |
| ChatGPT | Plus | $20 | Expanded messages and uploads |
| Codex | Plus | $20 | 15 to 160 GPT-6.1 Sol messages per 5 hours (estimate) |
| Claude | Pro | $20 | At least 5x Free per 5-hour session |
| Claude | Enterprise | $20/seat+ | Seat fee plus usage billed at API rates |
| Claude Code | Pro | $20 | Shared pool with Claude, 5-hour + weekly |
| Claude Code | Enterprise | $20/seat+ | Seat fee plus usage billed at API rates |
| Windsurf (Devin) | Pro | $20 | Increased quotas |
FAQ
Which plans are listed on this page?
Gemini Google AI Plus ($4.99), ChatGPT Go ($8), Codex Go ($8), Cursor Plus ($8), Grok Plus ($8), GitHub Copilot Pro ($10), Mistral Le Chat / Vibe Pro ($14.99), Perplexity Pro ($17), Gemini Google AI Pro ($19.99), ChatGPT Plus ($20), Codex Plus ($20), Claude Pro ($20).
Where do these prices come from?
Each vendor's official pricing page, checked hourly by LimitDigest.