The verdict in three sentences
An engineering firm of 60 engineers handling 120 bids a year spends an average of 4 to 6 person-days per bid, more than half of it hunting for references, CVs and paragraphs from past method statements. A first-draft AI, fed with 800 indexed submissions and hosted in the UK, costs GBP 21,000 to 42,000 excluding VAT and GBP 170 to 680 a month in API fees. With response time cut by 40%, it pays back in under a year, provided the engineer remains the final author.
What the tool actually does
The business development director is not after an automatic writer, but an assistant that reads the instructions to tenderers and the technical specification, then assembles a first draft from the firm's own library.
| Bid step | Without AI (person-days) | With AI (person-days) | AI role |
|---|---|---|---|
| Reading instructions and scoring criteria | 0.5 | 0.2 | Extracts criteria, weightings, required documents |
| Finding similar references | 1.0 | 0.3 | Semantic search across 800 submissions and case sheets |
| Selecting and tailoring CVs | 0.8 | 0.4 | Suggests profiles matching required skills |
| Writing the method statement | 2.0 | 1.2 | Structured first draft following the scoring criteria |
| Review and compliance | 0.7 | 0.6 | Checklist of documents and mandatory statements |
| Total per bid | 5.0 | 2.7 | About 46% saved in this scenario |
The contractual target stays cautious: 40% less time on average, because highly specific bids (structures, environmental impact studies) still require largely original writing.
2026 budget and hosting choice
The GBP 21,000 to 42,000 range depends on the state of your document base and how deeply the tool integrates with your systems (document management, SharePoint, bid tracking CRM).
| Item | Scope | Indicative budget excl. VAT |
|---|---|---|
| Scoping and document audit | Inventory of 800 submissions, formats, access rights | GBP 2,500 to 4,200 |
| Indexing and vector database | Chunking, metadata (client, asset, year, value) | GBP 5,000 to 10,000 |
| Tender analysis module | Criteria and document extraction, compliance grid | GBP 3,400 to 6,800 |
| First-draft generation | Templates per contract type, house style | GBP 6,000 to 12,700 |
| Interface and integration | Web access, Word export, document system link | GBP 2,500 to 5,000 |
| Testing and training | Tests on 10 real bids, 3 to 4 hour training | GBP 1,700 to 3,400 |
| Recurring costs | Language model API, UK hosting | GBP 170 to 680 per month |
For sensitive public contracts (defence, energy, local authority data), UK or EU hosting and a guarantee that models are not trained on your documents must be written into the contract. Go-live takes 8 to 12 weeks.
Risks to manage
The first risk is reusing outdated information: a 2021 CV or a reference whose value has changed. The system should date every source and flag anything older than 3 years. The second is client confidentiality: a paragraph from a private contract must not resurface in a competitor's bid, hence usage rights on every indexed document. The third is uniform style: without editing, submissions start to look alike, and public buyers notice quickly.
Mini case study
Rebecca, business development director of a 60-engineer consultancy in London, runs 120 bids a year at 5 person-days on average, valued at GBP 550 a day.
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- Current cost: 120 x 5 x 550 = GBP 330,000 a year of bid time.
- 40% saving: GBP 132,000 of time freed for billable work or 30 extra bids.
- Investment: GBP 34,000 excluding VAT plus GBP 420 a month API, so GBP 39,040 in year one.
Even counting only half the freed time, GBP 66,000, the project pays back in about 7 months.
FAQ
Can the AI answer a tender on its own?
No, and it shouldn't. It produces a first draft covering 50 to 70% of the text, and the engineer adapts the method to the site and signs off every commitment.
Are our documents used to train the model?
Not if the API contract excludes it, which is standard for enterprise plans in 2026. Documents stay in a UK-hosted database queried at each request.
How many submissions do we need for the tool to be useful?
From 200 to 300 well-classified submissions, results become relevant. With 800, coverage of contract types is usually good.
What is the real monthly API cost?
For 120 bids a year, expect GBP 170 to 680 a month depending on document length and model choice.
How quickly is the tool operational?
In 8 to 12 weeks, including 3 to 4 weeks spent indexing and cleaning documents.
Let's scope your project. Tell us your bid volume and the state of your submission library, and we will price an AI assistant between GBP 21,000 and 42,000, UK-hosted, delivered in 8 to 12 weeks. Detailed quote within 48 h via our form. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
