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A long-context reviewer that sits beside the existing system, reads what it already produces, and closes proposal writing. Aimed at legal paralegal teams, replacing the spreadsheet that currently holds it together.
In short: Legal Proposal Builder is a long-context reviewer aimed at legal paralegal leads, covering proposal writing. It scores 75/100 on AltF Ideas, carried by monetisation (95) and held back by feasibility (25). Typical pricing is $12k–$180k per customer per year, with a first version reachable in six to twelve months for $34k–$121k.
Legal teams lose proposals rebuilt from scratch that are 80% identical. The work sits between two systems that were never designed to talk. The error rate is tolerated because measuring it would cost more than the errors.
A long-context reviewer that handles proposal writing end to end and hands a human the exceptions rather than the queue. Revenue is managed service, which suits a buyer who wants the cost to track the value rather than the seat count.
| Total addressable market | $839M |
|---|---|
| Category growth (CAGR) | 10% |
| Annual contract value | $12k – $180k |
| Pricing model | Managed service |
| Time to first revenue | 68 days |
| Startup cost to MVP | $34k – $121k |
| Build effort | 6-12 months |
Million-token context windows made whole-document reasoning possible in one pass. Legal is growing at roughly 12% a year, and this job has not been re-tooled since it was designed around paper.
| Who | The gap |
|---|---|
| A spreadsheet | The real incumbent in most of the market, and it is free |
| An internal hire | Works until volume doubles, then breaks again |
| A generalist AI tool | No domain grounding, so output needs full human review |
The incumbent is a person, and displacing a person is a change-management problem.
An idea you cannot act on is entertainment. Four concrete steps, wired to tools already running on AltFTool.
Score problem urgency, willingness to pay, and reachable audience size before writing any code.
→ AltF IdeaLabAsk how they handle this today and what it costs them. If nobody can quantify the pain, the demand score is optimistic.
→ Survey BuilderCheck availability, DNS, and email authentication in one pass so your first outreach lands in an inbox.
→ AltF DomainOpsStand up intake, the review queue, and billing before you build the clever part.
→ AltF Flow