9 Best AI Proposal Software Tools in 2026

The best AI proposal software for most sales teams in 2026 is PandaDoc, which pairs AI drafting with templates, pricing tables and e-signature. The tools ranked second and third complete the top three for businesses answering UK public-sector tenders.

"AI proposal software" means three different things depending on who is asking. Sales teams want an AI proposal generator that turns a CRM deal into a branded, signable document. RFP teams want an AI proposal assistant that answers security questionnaires from a content library. Suppliers bidding for government contracts want AI proposal writing that follows a buyer's evaluation criteria and word limits. This list covers all three and says which is which.

How we evaluated AI proposal software¶

• Drafting quality: does the AI proposal writer produce usable first drafts grounded in your own content?
• Content library: can you store approved answers, case studies and certificates for reuse?
• Fit to the document: sales quote, RFP questionnaire or scored public tender.
• Workflow: approvals, collaboration, export to Word or PDF, e-signature.
• Pricing: published prices, free plans and per-seat costs.

1. PandaDoc: Best for sales proposals and quotes¶

PandaDoc pricing

When to choose PandaDoc

• You sell to private clients and want proposal-to-signature in one tool
• Your deals live in HubSpot or Salesforce
• You want AI to draft and rewrite sections inside branded templates

Where PandaDoc falls short

• Not built for scored public tenders
• Per-seat pricing adds up for large teams
• No UK tender feed

2. CleanTender: Best for cleaning tenders¶

CleanTender pricing

When to choose CleanTender

• You bid for cleaning, security, grounds, waste or catering contracts
• You want method statements that reference BICSc, COSHH, SIA/ACS, BS 7858 and HACCP
• You want your certificates checked against each tender's requirements

Where CleanTender falls short

• Soft FM only: cleaning, security, grounds, waste and catering
• Not built for private-sector RFPs, security questionnaires or sales proposals
• No enterprise content library, approval chains or CRM integration
• No e-signature for sales quotes

3. AI Tender Writer: Best for UK public-sector proposals in any sector¶

AI Tender Writer pricing

When to choose AI Tender Writer

• Your proposals are UK public-sector tenders scored against published criteria
• You want answers drafted from your own evidence and kept within word limits
• You want to find and qualify tenders in the same tool you write them in

Where AI Tender Writer falls short

• Focused on UK public sector tenders, so it is not built for private-sector RFP libraries at enterprise scale
• No e-signature, CRM integration or sales-proposal design tools
• Lighter multi-team review workflow than enterprise response platforms
• You still review, edit and own every answer before submission

4. Proposify: Best for agencies and service businesses¶

Proposify pricing

When to choose Proposify

• You are an agency sending designed proposals
• You need approval workflows before proposals go out
• You want analytics on how clients read proposals

Where Proposify falls short

• Sales focus, not tenders
• No free plan
• No UK tender feed

5. Qwilr: Best for web-based interactive proposals¶

Qwilr pricing

When to choose Qwilr

• You want proposals that work as interactive web pages
• You sell B2B services or software
• You want buyer engagement analytics

Where Qwilr falls short

• Web format does not suit tender portals
• Sales-led
• No scored-question support

6. AutogenAI: Best for enterprise bid teams¶

AutogenAI pricing

When to choose AutogenAI

• You run a large bid team with dedicated writers
• You want bid-focused generative AI grounded in your library
• You need enterprise security controls

Where AutogenAI falls short

• Pricing not published
• Built for enterprise teams
• No UK tender feed

7. Loopio: Best for RFP and security questionnaire teams¶

Loopio pricing

When to choose Loopio

• You answer high volumes of RFPs, DDQs and security questionnaires
• You want a mature answer library with AI suggestions
• You collaborate across teams in CRM and Slack

Where Loopio falls short

• No UK public tender feed
• Pricing not published
• Less suited to long-form tender narratives

8. Responsive: Best for large strategic response teams¶

Responsive pricing

When to choose Responsive

• You run a large strategic response team
• You need a wide range of integrations and analytics
• You answer RFPs, RFIs and DDQs at scale

Where Responsive falls short

• Enterprise complexity
• Pricing not published
• No UK tender feed

9. Better Proposals: Best for small businesses sending quick proposals¶

Better Proposals pricing

When to choose Better Proposals

• You are a small business sending quick sales proposals
• You want payments built into the proposal
• You want a tool that is easy to learn

Where Better Proposals falls short

• Lighter AI features
• Not for tenders

AI proposal software pricing¶

How to choose an AI proposal generator¶

What to know about AI proposal writing for tenders¶

• Public buyers score answers against published criteria, so an AI proposal writer must address each criterion explicitly.
• PPN 017 sets out how UK buyers should approach supplier use of AI. Read each tender's instructions on disclosure.
• Never let AI invent evidence. Every claim should trace back to a real contract, policy or certificate.
• Social value questions carry a minimum 10% weighting in in-scope central government procurements under PPN 002.

Sales proposals vs tender responses: why the tool matters¶

AI proposal software falls into two groups, and picking from the wrong one is the most common mistake we see. The first group (PandaDoc, Proposify, Qwilr, Better Proposals) is built for sales proposals: a document you design, send to a prospect, track and get signed. The buyer reads it once, often skims it, and decides with the salesperson. Design, pricing tables, analytics and e-signature matter most.

The second group (AI Tender Writer, AutogenAI, Loopio, Responsive and sector-specific tender tools) is built for formal responses: tenders, RFPs and security questionnaires. Here the buyer writes the questions, sets word limits and scores every answer against a published marking scheme. Layout barely matters. What wins is answering every sub-point of the question with evidence, in the buyer's own structure, within the limit.

How an AI proposal generator works¶

Most AI proposal writers combine a large language model with your own content. The better tools do three things before the model writes anything. They read the request (the tender questions, the RFP or the client brief) and break it into the parts that need answering. They retrieve relevant material from your library: case studies, policies, CVs, method statements and previous winning answers. Then they ask the model to write within a structure and a word limit, citing that material rather than inventing it.

That grounding step is the difference between a useful AI proposal assistant and a general chatbot. A chatbot asked to "describe our quality management approach" will write something plausible about a company that does not exist. A grounded tool will describe your ISO 9001 process, your audit schedule and the contract where you cut defects, because those facts are in your library.

Setting up AI for proposals: a practical first week¶

1. Day 1: gather your source material. Company profile, accreditations and certificates, three to six case studies with measurable outcomes, key policies (quality, health and safety, environment, equality, data protection) and two or three recent bids you are proud of.
2. Day 2: load it into the tool and tag it by service line and sector so the AI can find the right evidence for each question.
3. Day 3: run a real past tender or proposal through the tool and compare its draft with what you submitted. Note where it is thin and add the missing evidence to the library.
4. Day 4: agree a review process. Decide who checks facts, who checks tone and who signs off price.
5. Day 5: use it on a live opportunity, with a person owning every answer from draft to submission.

Using AI proposal software responsibly in UK public procurement¶

There is no general ban on suppliers using AI to write bids for UK public contracts. PPN 017 (Improving Transparency of AI Use in Procurement) sets out how contracting authorities can ask suppliers about AI use and manage the risks, and some buyers now include a question or declaration about it. Read each tender's instructions and answer honestly.

• Keep a person accountable for every submitted answer. The bid is your legal offer, whatever tool drafted it.
• Never let the AI invent case studies, figures, accreditations or staff names. Check every claim against your records.
• Check where your data goes. Choose tools that do not use your content to train shared models and that store data securely.
• Watch for identical wording across bids. Evaluators notice generic text, and it rarely scores well.
• Keep a record of what the tool produced and what you changed, in case a buyer asks how the response was prepared.

Common mistakes with AI proposal writing¶

• Accepting the first draft. AI drafts are a starting point; the scoring gain comes from adding specific evidence and removing padding.
• Feeding it thin source material. If your library has no measurable outcomes, the AI cannot write them for you.
• Ignoring the marking scheme. Paste in the scoring criteria so the draft addresses what evaluators are told to look for.
• Using a sales proposal tool for tenders. Beautiful templates do not help when the buyer's portal accepts plain text boxes with a 500-word limit.
• Over-writing. Filling every word of the limit with generic statements scores worse than a shorter answer packed with evidence.

AI proposal software by sector¶

Agencies, consultancies and SaaS businesses that mostly sell privately get the most from PandaDoc, Proposify or Qwilr, because speed to a signed deal matters more than scored questions. Construction, IT, professional services and care providers bidding to councils, the NHS and central government benefit more from a tender-focused tool that reads the question structure and your compliance documents. Soft FM contractors in cleaning, security, grounds and catering face sector-specific pass/fail checks such as BS 7858 vetting, SIA licensing and COSHH, so a sector-specialised tool is worth considering. Large enterprises answering hundreds of RFPs and security questionnaires a year usually need Loopio or Responsive for their content library workflows.

Worked example: turning a tender question into an AI-drafted answer¶

Take a typical question from a council services tender: "Describe how you will manage and report performance against the contract KPIs. (Maximum 750 words, weighting 10%.)" A general AI proposal assistant will write about the importance of performance management. A tender-focused tool should instead break the question into its parts: which KPIs, how they are measured, how often they are reported, who is accountable and what happens when performance slips.

It then pulls your evidence: the monthly KPI dashboard you already provide to another council, the named contract manager, the escalation route and a real example of recovering a missed target. The draft follows the question's order, uses the council's KPI names from the specification, and stays under 750 words. Your job is to check each claim, add anything the library lacks and make sure the tone suits the buyer.

• Paste in the full question, the word limit, the weighting and the scoring guidance.
• Attach or select the evidence you want used, rather than letting the tool guess.
• Ask for the answer structured under the question's own sub-headings.
• Review for accuracy first, then for specificity, then for style.
• Score the draft yourself against the marking scheme before you submit.

How much does AI proposal software cost?¶

Pricing follows the two groups. Sales proposal tools usually charge per user per month, with AI features on higher tiers, so a small team pays for each seat. Enterprise RFP platforms such as Loopio and Responsive typically quote on request, sized to the number of users and projects. Tender-focused tools for SMEs tend to publish flat pricing: AI Tender Writer is free to start and £149 a month or £1,490 a year on Pro, with unlimited bid drafting and 30 AI scans a month. Check the pricing table above for each tool, and always trial on a real document before paying.

More questions about AI proposal software¶

What should I look for in an AI proposal generator?

Grounding in your own content library, respect for word limits, support for the document types you write most (sales proposals or scored tenders), clear data-handling terms and published pricing you can trial before committing.

Is PandaDoc good for tenders?

PandaDoc is strong for sales proposals, quotes and e-signature. For UK public tenders, where buyers set the questions, word limits and marking scheme, a tender-focused tool is usually a better fit because it writes answers to the scored criteria and tracks tender-specific compliance.

Can I use AI proposal software with my existing templates?

Most tools let you import Word templates or rebuild them, and the AI then fills sections from your content library. For tenders, the buyer's own question structure replaces your template, so the tool should adapt to it.

Related guides: proposal software, AI bid writing software, AI RFP software, proposal automation software and ChatGPT for bid writing.