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Proposal writing handled by a long-context reviewer, with a human signing rather than writing. Aimed at marketing agencies ops teams, going after the low-value tail everyone else skips.
In short: Proposal Builder Built for Ops Teams is a long-context reviewer aimed at marketing agencies ops managers, covering proposal writing. It scores 71/100 on AltF Ideas, carried by demand (93) and held back by feasibility (25). Typical pricing is $4.3k–$91k per customer per year, with a first version reachable in six to twelve months for $38k–$130k.
Marketing agencies teams lose proposals rebuilt from scratch that are 80% identical. A typical marketing agencies operation runs this on people, memory, and a shared spreadsheet. The backlog only surfaces when a customer or an auditor finds it first.
A narrow long-context reviewer scoped to proposal writing alone — no platform, no migration, no six-month rollout. Revenue is per-outcome, which suits a buyer who wants the cost to track the value rather than the seat count.
| Total addressable market | $1.1B |
|---|---|
| Category growth (CAGR) | 16% |
| Annual contract value | $4.3k – $91k |
| Pricing model | Per-outcome |
| Time to first revenue | 71 days |
| Startup cost to MVP | $38k – $130k |
| Build effort | 6-12 months |
Million-token context windows made whole-document reasoning possible in one pass. Marketing agencies is growing at roughly 14% a year, and this job has not been re-tooled since it was designed around paper.
| Who | The gap |
|---|---|
| A vertical competitor | Priced and scoped for enterprise accounts, not this segment |
| The incumbent suite | Sells a platform; this job is one neglected module inside it |
| A spreadsheet | The real incumbent in most of the market, and it is free |
Integrations with the incumbent system of record are undocumented and gatekept.
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