BidWriter vs Proactis
A side-by-side look at BidWriter and Proactis for UK suppliers — features, pricing, UK public sector fit, and who each tool best suits. Honest about where Proactis is stronger.
TL;DR
BidWriter is an AI bid-writing tool built specifically for UK public sector suppliers, with integrated live tender discovery, AI drafting and a free starter plan. Proactis is bid management for public sector and large private-sector buyers running source-to-pay. Proactis is a UK-headquartered source-to-pay (S2P) software platform used by public sector and enterprise BUYERS to run sourcing, contracts, procurement and supplier management. It is a buyer-side tool — different jobs from a supplier-side bid-writing tool.
BidWriter vs Proactis: side-by-side
| Feature | BidWriter | Proactis |
|---|---|---|
| Category | AI bid writing for UK public sector | Bid management |
| Origin | UK · launched 2024 | UK · long-established (founded 1996) |
| Primary audience | UK SMEs and growth-stage bid teams | Public sector and large private-sector BUYERS running source-to-pay |
| Pricing model | Free plan + £49–£799/mo per-seat SaaS | Annual enterprise contracts, custom-quoted |
| UK public sector focus | Yes — specialist (CCS, FTS, NHS, councils) | Yes — specialist |
| Free plan | Yes — 3 AI credits/month, no card required | No |
| Live UK tender feed | Yes — integrated via WinAContract | No |
| Bid library | Yes — compounds with every bid | No |
| Tender-pack parser | Yes — auto-extracts question structure from PDFs | No |
| AI bid drafting | Yes — native, generates structured first drafts | No |
Where BidWriter is differently positioned to Proactis
- BidWriter is for SUPPLIERS bidding into UK public sector; Proactis is for BUYERS running the procurement — opposite sides of the table
- BidWriter responds to tenders; Proactis issues and manages them
- Free WinAContract layer surfaces opportunities that Proactis-powered buyers publish
Where Proactis is stronger
BidWriter isn't the right tool for every team. Proactis is genuinely stronger in these areas:
- Deep source-to-pay stack covering sourcing, contracts, P2P and supplier management
- Established UK public sector deployments at council, NHS and central government level
Best for BidWriter
Suppliers on the other side — responding to tenders issued by Proactis-powered buyers and others.
Best for Proactis
Public sector and enterprise buyers running structured source-to-pay across many suppliers.
Try BidWriter free — no card required
Free plan: 3 AI credits per month, the full bid library, real UK tender feed. See the workflow before committing.
Start free →FAQs
How does BidWriter compare to Proactis?
BidWriter is an AI bid-writing tool built specifically for UK public sector suppliers, with integrated live tender discovery, a compounding bid library, AI drafting and a free starter plan. Proactis is positioned as bid management for public sector and large private-sector buyers running source-to-pay. The two tools solve overlapping but different jobs — see the comparison table on this page for the side-by-side detail.
Is BidWriter cheaper than Proactis?
In most cases yes. BidWriter starts at £0/month (free plan with 3 AI credits) and paid plans run from £49/month per seat, all month-to-month. Proactis's pricing is annual enterprise contracts, custom-quoted. Unit economics tend to favour BidWriter for any team running more than a couple of bids per month.
Is Proactis better than BidWriter for any use case?
Yes — Proactis is genuinely stronger when deep source-to-pay stack covering sourcing, contracts, p2p and supplier management. Public sector and enterprise buyers running structured source-to-pay across many suppliers.
What does Proactis actually do?
Proactis is a UK-headquartered source-to-pay (S2P) software platform used by public sector and enterprise BUYERS to run sourcing, contracts, procurement and supplier management. It is a buyer-side tool — different jobs from a supplier-side bid-writing tool.
Who should pick BidWriter over Proactis?
Suppliers on the other side — responding to tenders issued by Proactis-powered buyers and others.
Other comparisons
See all BidWriter comparisons, our buyer guides, or BidWriter pricing.