Your follow-up question shouldn't hijack the whole conversation
Choose how far you want to go
Start free. Upgrade when your questions become real work.
Free
$0USD / month
Discover
For exploring ideas without losing the thread.
- Branch any answer — explore a follow-up without derailing the conversation
- Interactive thought maps of your conversations
- Try verified debugging — run code, apply a fix, and test it again
- Web search with sources
- Create and understand images
- Analyze files and transcribe audio
- Fast reasoning for everyday questions
Most popular
Pro
$7USD / month
Early access price
Work
For people who use APReason every day.
- Unlimited branching — take any tangent as far as you need, then merge the insight back
- Deeper reasoning for complex questions
- Verified debugging with before-and-after results
- Run code and work with sandbox files
- Thought maps with AI-written labels and PDF reports
- Memory across conversations
- Keep context across branches, files, and investigations
- More files, images, search, and analysis
Premium
$18USD / month
Investigate
For researchers, developers, and power users tackling difficult problems.
- Everything in Pro
- Our most capable reasoning for difficult problems
- Deep investigations across multiple steps and branches
- Full debugging agent with our highest execution allowance
- Advanced thought maps with AI-generated analysis
- Enhanced memory for long-running work
- Highest allowances for files, images, search, and voice
Compare detailed usage limits
| Free | Pro | Premium | |
|---|---|---|---|
| Messages | 30 / day · 600 / mo | 200 / day · 5,000 / mo | 500 / day · 15,000 / mo |
| Branching | 2 per chat | Unlimited | Unlimited |
| Reasoning | — | 50 / mo | 200 / mo |
| Deep reasoning | — | 300 / mo | 1,000 / mo |
| Image generation | 5 / week | 10 / day · 100 / mo | 30 / day · 300 / mo |
| Image understanding | 5 / week | 30 / day | 100 / day |
| File analysis | 3 / day | 10 / day | 30 / day |
| Voice transcription | Shares file allowance | Shares file allowance | Shares file allowance |
| Code execution / verified debugging | 1 / day | 25 / day | 50 / day |
| Thought maps | Interactive map · PNG/SVG | AI labels (10 / day) · PDF | AI labels (30 / day) · PDF · AI analysis |
| Code & file context per question | Snippets (~8k tokens) | 3–5 files (~30k tokens) | Whole codebases & logs (100k+ tokens) |
| Upload size | 10 MB | 50 MB | 100 MB |
| Memory | Within a conversation | Across conversations | Enhanced, across conversations |
| Web search | 5 / day | 50 / day | 200 / day |
Fair-use limits keep the service fast for everyone. Cancel any time — you keep access until the end of the period you've paid for.