What is the best AI bid writing software in the UK?

There is no single best tool for every organisation. Specialist UK tender platforms such as mytender.io and Bidwell are built around public sector tenders; response platforms such as Loopio describe themselves as designed for RFPs, due diligence and security questionnaires; and general assistants such as Copilot are designed for everyday work across many tasks. Shortlist by the type of bids you write, then trial each tool on a real tender.

Can I use ChatGPT or Copilot to write tenders?

You can use them to draft and edit text, provided your organisation allows it and you do not paste confidential buyer documents into tools that are not approved for that data. If you do, plan how you will track mandatory requirements, apply the scoring criteria and manage team review alongside them. Check the buyer's rules on AI use in the tender documents as well.

Is AI written bid content allowed in UK public sector tenders?

Generally yes, but some buyers ask suppliers to declare AI use or set conditions in the instructions to tenderers, and you remain responsible for every statement you submit. Use AI to draft from your own verified evidence, then have subject experts review, and never submit claims you cannot evidence.

How much does AI bid writing software cost?

Pricing models vary widely. According to each company's website as of October 2026, Bidwell publishes monthly plans, Loopio offers packaged tiers with custom quotes, and mytender.io provides pricing on request. Compare total cost of ownership, including setup, training and content migration, against the value of the contracts you bid for.

What should I test in a free trial or demo?

Bring a recent tender you know well. Check how the tool handles the full document pack, whether it identifies the scoring criteria and mandatory requirements, how good the first drafts are when based on your own content, how reviewers work together, and where your data is stored.

Best AI Bid Writing Software 2026: UK Buyer's Guide

AI bid writing software has matured quickly. In 2026 most UK bid teams are no longer asking whether to use AI, but which kind of tool fits the bids they write and the data they handle. This guide sets out the main types of tool, how several options describe themselves, and how to choose and roll one out.

We are mytender.io, so we have a stake in this market. Everything we say about other products comes from each company's own website as of 16 October 2026, and our detailed comparisons link to the pages we used. Features and prices change, so always confirm with the vendor.

The Three Types of AI Bid Writing Tool

Most products fall into one of three groups. Knowing which group a tool belongs to tells you more than any feature list.

Type	Built for	Examples
Specialist UK tender platforms	UK public sector tenders, from discovery to submission	mytender.io, Bidwell
Response library platforms	RFPs, RFIs, due diligence and security questionnaires	Loopio
General AI assistants	Everyday work across many tasks, including drafting and summarising	ChatGPT, Microsoft Copilot, Google Gemini

Specialist UK tender platforms

These tools are designed around the UK public procurement process: finding notices on Find a Tender and Contracts Finder, reading the ITT pack, answering scored quality questions and checking compliance before submission.

mytender.io analyses tender documents to extract requirements, deadlines and scoring criteria, drafts answers from your past successful bids and approved content, checks compliance, gives AI scoring and feedback, and supports team assignment and review. It holds ISO 27001 and Cyber Essentials Plus certification, offers managed cloud, client database or on premise deployment, and provides a free tender browser. Pricing is on request. Bidwell, according to its website as of October 2026, is aimed at UK small and medium sized businesses. You build a free knowledge base from past bids, policies and case studies; it drafts tender, PQQ and supplier questionnaire answers citing their source documents, exports to the buyer's Word or Excel template, and offers monitoring of UK tender portals as an add on. It publishes monthly pricing. See mytender.io vs Bidwell.

Response library platforms

Loopio, according to its website as of October 2026, is AI RFP software for responding to RFPs, RFIs, due diligence and security questionnaires. It provides a content library with AI auto fill, collaboration features and CRM integrations including Salesforce, HubSpot and Microsoft Dynamics 365, and undergoes an annual SOC 2 Type II audit. See mytender.io vs Loopio.

General AI assistants

ChatGPT, Microsoft Copilot and Google Gemini are general purpose AI assistants. Their publishers describe them as helping with a wide range of everyday work, including drafting, editing and summarising, and many bid teams already have access to at least one. If you use one for bids, plan how you will track mandatory requirements, apply the scoring criteria and manage team review alongside it, and check your organisation's data policy before using any AI tool with confidential documents. Our article on mytender.io vs Microsoft Copilot and our guide to general purpose AI versus specialist bid tools look at this in more detail.

Side by Side

Area	mytender.io	Bidwell (per its website)	Loopio (per its website)
Main focus	UK public sector tenders	UK SMB tenders and questionnaires	RFPs and security questionnaires
Security and data stated	ISO 27001, Cyber Essentials Plus	Content not used to train shared models; encrypted in transit and at rest	Annual SOC 2 Type II audit
Published pricing	No	Yes	Tiers, custom quote

Information as of 16 October 2026. Sources are listed on each detailed comparison page linked above.

What Matters Most for UK Public Sector Bids

Whichever tool you look at, judge it against the way UK tenders are actually scored.

Handling the full tender pack

A typical ITT includes instructions to tenderers, a specification, evaluation criteria, contract terms, pricing schedules and several questionnaires. Good software reads all of it, pulls out the requirements and deadlines, and keeps them visible while you write. Our ITT guide explains what each document does.

Writing to the scoring criteria

Most marks sit in quality questions scored against published criteria, often on a 0 to 5 or 0 to 10 scale. The tool should help you answer the question asked, structure the response to the criteria and evidence every claim. See how tenders are evaluated and our method statement guide.

Drafting from your own evidence

Evaluators reward specific, verifiable evidence: named contracts, measured outcomes and real people. AI that drafts from your own case studies, policies and past winning bids produces far more credible answers than generic text.

Compliance and the Procurement Act 2023

Missing a mandatory requirement, exceeding a word limit or leaving out a declaration can disqualify an otherwise strong bid. Look for compliance checking, and make sure the tool reflects the current rules under the Procurement Act 2023.

Security and data handling

Tender documents and your bid library are commercially sensitive. Ask where data is hosted, whether it is used to train models, which certifications the vendor holds and whether single sign on and role based access are available.

Total Cost of Ownership

The subscription is only part of the cost. When you build the business case, include:

Licences or subscription: seats, projects or usage, and how price changes as you grow
Setup and content migration: time to gather, clean and load past bids, case studies and policies
Training: for writers, reviewers and subject experts who contribute occasionally
Integrations: connecting document stores, CRM and single sign on
Ongoing administration: keeping the content library current and access under control

Set these against the measurable benefits: hours saved per bid, the number of additional bids your team can submit, and any change in quality scores and win rate.

Rolling Out AI Bid Software

A phased approach reduces risk and builds confidence.

Prepare your content. Collect your best recent bids, case studies, CVs, policies and certificates. Remove anything out of date.
Pilot on live bids. Use the tool on two or three real tenders with a small team, comparing time spent and quality against previous bids.
Agree ways of working. Decide who reviews AI drafts, how subject experts contribute and how you record what was submitted.
Expand and refine. Roll out to the wider team, keep improving the library and feed buyer feedback back into your content.

Metrics to Track

Measure before and after so you know whether the software is paying for itself:

Average hours of writing and review per bid
Number of bids submitted per quarter
Quality scores by question, from buyer feedback
Win rate by sector and contract value
Time from tender release to first complete draft
Compliance issues found at final review

How to Choose

Start with your bids. If most are UK public sector tenders, shortlist specialist tender platforms first. If most are sales RFPs and security questionnaires, look at response libraries.
Check your constraints. Security requirements, hosting, integrations and budget will narrow the field quickly.
Trial on a real tender. A demo on the vendor's sample content tells you little; use a recent tender you know well.
Involve reviewers. The people who sign off bids should judge the quality of the drafts.
Ask the same questions of every vendor so you can compare like with like.

New to tendering? Our bid writing guide and PQQ guide cover the fundamentals.

Try mytender.io on Your Next Tender

Request a demo and bring a tender you are working on, or search live UK opportunities in the free tender browser.

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About this guide: information about other products is based on each company's own public website as of 16 October 2026 and may have changed since. All product names are trademarks of their owners, and this guide is not endorsed by any of them. If you believe anything here is inaccurate or out of date, please email info@mytender.io or contact us and we will review and correct it promptly.