Best AI Proposal Writers: 10 Tools for Proposals and RFPs
· Updated October 24, 2026
The best AI proposal writer for most sales teams in 2026 is PandaDoc, which pairs an AI Assistant with templates, pricing tables and e-signatures, and has a free plan.
Proposify is the best pick for teams that want tight control over what reps can edit, and Qwilr is best for proposals that look like a modern web page instead of a PDF.
If you answer RFPs, you need a different kind of tool. Loopio and Responsive are the leaders for big teams with large libraries of approved answers, AutoRFP.ai is the clearest priced option, and Inventive AI uses AI agents for complex bids.
Better Proposals is the budget pick, and ChatGPT and Claude are free ways to draft a first version. Prices were checked in October 2026.
What Is an AI Proposal Writer?
An AI proposal writer is software that uses a large language model to help you draft, format and send a business proposal or an RFP response. It writes first drafts, pulls in approved content, and keeps your wording and branding the same across documents.
There are three main types. Proposal software such as PandaDoc and Qwilr builds sales proposals with templates, pricing and e-signatures. RFP software, also called AI RFP response software, such as Loopio and AutoRFP.ai, answers long buyer questionnaires using a library of past answers.
General AI assistants such as ChatGPT and Claude can draft any section, but they do not track who signed or store approved content. For writing apps beyond proposals, see our guide to the best AI writing tools.
Quick Comparison: 10 Best AI Proposal Writers
PandaDoc is our top pick overall, followed by Proposify and Qwilr. Here is how all 10 compare on best use, starting price and tool type. Prices were checked in October 2026 and change often, so confirm before you subscribe.
| Tool | Best For | Starting Price | Type |
|---|---|---|---|
| PandaDoc | All-round sales proposals with e-signatures | Free; Starter about $19/seat/mo billed yearly | Proposal software |
| Proposify | Sales teams that want control over proposals | Free trial; Build about $39/user/mo billed yearly | Proposal software |
| Qwilr | Interactive web page proposals | Free trial; Starter about $35/user/mo billed yearly | Proposal software |
| Better Proposals | Freelancers and small agencies on a budget | Free trial; Starter about $13/user/mo billed yearly | Proposal software |
| Loopio | Enterprise RFP content libraries | Custom quote | RFP software |
| Responsive | Large teams with heavy RFP volume | From about $10,000 | RFP software |
| AutoRFP.ai | Published RFP pricing with unlimited users | About $899/mo billed yearly | RFP software |
| Inventive AI | AI agents for complex RFPs | Custom quote | RFP software |
| ChatGPT | Free first drafts of any proposal | Free; Plus about $20/mo | AI assistant |
| Claude | Reviewing long RFPs and drafts | Free; Pro about $20/mo | AI assistant |
What Makes a Great AI Proposal Writer?
A great AI proposal writer helps you send accurate, on-brand proposals faster, while a person stays in charge of the final version. The best AI for proposal writing fits the kind of proposals you send most often.
We weighed five things: how well the AI drafts and edits, how it reuses approved content, the tools around the writing (templates, pricing tables, e-signatures, approvals), security and integrations with tools like Salesforce and HubSpot, and how clear and fair the pricing is.
Tools ranked higher when they publish prices and offer a free plan or trial, and lower when you must book a sales call to learn anything about cost.
Best AI Proposal Software for Sales Teams
1. PandaDoc: Best all-round AI proposal generator
PandaDoc is a document platform for proposals, quotes and contracts, with built-in e-signatures.
What it does well. PandaDoc covers the whole sales document process in one place. You build a proposal from a template, add a pricing table, send it, see when the client opens it, and collect a legal e-signature. Its AI Assistant helps draft and edit text, and paid plans add AI search across your documents.
Key features:
- AI Assistant for drafting and editing on paid plans
- AI search, plus AI data extraction on Business
- Templates, pricing tables and e-signatures
- Connects to ChatGPT and Claude through MCP, even on Free
Pricing. Free costs $0 and allows 5 documents a month. Starter is about $19 a seat a month and Business about $49 a seat a month, billed yearly, and monthly billing costs more. Enterprise is a custom quote. Paid plans come with a 14-day free trial. Checked in October 2026.
Best for: Small and mid-size sales teams that want proposals, quotes and signatures in one tool.
Limitations. Per-seat pricing adds up fast for larger teams, and some features, such as AI data extraction, are only on Business and up. It is not built for long RFP questionnaires.
2. Proposify: Best for proposal control and consistency
Proposify is proposal software built for sales teams that send a steady stream of proposals.
What it does well. Proposify is strong on control. Managers can lock template sections and pricing so reps only change what they should, which keeps every proposal on brand. Its embedded AI writing widget helps you prompt, write, refine, fix spelling and condense text inside the editor.
Key features:
- AI writing widget inside the editor
- MCP server to create and update documents from Claude
- Content locking and approval workflows
- Interactive pricing and e-signatures
Pricing. Build is about $39 a user a month billed yearly ($468 a year), or about $49 billed monthly. Grow is about $65 a user a month billed yearly.
Scale is about $107 a user a month and comes with a platform fee of about $12,800 a year that includes 10 users. There is a 14-day free trial with no card needed. Checked in October 2026.
Best for: Sales teams that want every rep to send a polished, approved proposal.
Limitations. There is no free plan, and the Scale tier is a big jump in cost. Paid add-ons, such as custom template design, raise the total.
3. Qwilr: Best for interactive web page proposals
Qwilr turns proposals into interactive web pages instead of static PDFs.
What it does well. A Qwilr proposal is a link your buyer opens in a browser. It can include video, interactive pricing the buyer can adjust, and an accept button. That format stands out in a crowded inbox, and you can see how buyers engage with each page.
Key features:
- Web page proposals with video and embeds
- Interactive quotes and online acceptance
- MCP connection to work in Qwilr from Claude or ChatGPT
- Smart Proposal Engine and AI Prefill on Scale
Pricing. Starter is about $35 a user a month billed yearly or about $49 billed monthly. Growth is about $55 a user a month with a 5 user minimum, and Scale is about $75 a user a month with a 10 user minimum.
Growth and Scale are billed yearly only. Starter has a 14-day free trial with no card needed. Checked in October 2026.
Best for: Agencies and SaaS sales teams that want proposals buyers enjoy reading.
Limitations. Its strongest AI features are only on Scale, which needs 10 users. Some buyers still expect a PDF they can print or forward.
4. Better Proposals: Best budget pick for freelancers and small agencies
Better Proposals is simple proposal software aimed at freelancers, consultants and small agencies.
What it does well. It has the lowest starting price of the dedicated proposal tools here, with ready-made templates, online signing and payment collection. Premium and Enterprise plans include an MCP server, so you can connect an AI agent to look up documents and create proposals.
Key features:
- Ready-made proposal templates
- Online signing and payments
- Open tracking and notifications
- MCP server for AI agents on Premium and Enterprise
Pricing. Starter is about $13 a user a month, Premium about $21 and Enterprise about $42, billed yearly. Monthly billing is about $19, $29 and $49. Every plan has a 14-day free trial with no card needed. Checked in October 2026.
Best for: Solo pros and small teams who want clean proposals for a low price.
Limitations. It has no built-in AI writer, so you draft text yourself or with a separate assistant. It is not designed for large RFPs.
Best AI RFP Response Software
5. Loopio: Best for enterprise RFP content libraries
Loopio is RFP response software built around a library of approved answers.
What it does well. Loopio shines when you already have a large body of past answers. Its generative AI drafts responses from your library, and the platform helps teams keep that content reviewed and up to date. Loopio says more than 1,700 companies use it.
Key features:
- Generative AI drafting from your content library
- Project management for RFPs, DDQs and security questionnaires
- Loopio MCP for Claude, ChatGPT and other assistants
- Multi-language library on Enhanced, translation as an add-on
Pricing. Loopio does not publish prices. Its Foundations, Enhanced and Enterprise plans are sold by custom quote, and Foundations includes 10 seats. Checked in October 2026.
Best for: Mid-size and large companies with a dedicated proposal or sales engineering team.
Limitations. You must talk to sales to learn the cost, and the AI is only as good as the library you maintain. No free trial is listed.
6. Responsive: Best for large teams with heavy RFP volume
Responsive, formerly called RFPIO, is a response management platform for RFPs, security questionnaires and other buyer requests.
What it does well. Responsive is built for scale. It manages large content libraries, routes questions to experts and tracks every project, and its AI and automation studio drafts answers. Enterprise Edition adds flexible custom AI for teams with special needs.
Key features:
- AI and automation studio for drafting answers
- AI Assistant for quick answers from approved content
- Large content library with expert review
- Flexible custom AI on Enterprise Edition
Pricing. Emerging Edition starts from about $10,000. Growth and Enterprise editions are custom quotes, and pricing is built from a platform fee, user licenses and add-ons. Checked in October 2026.
Best for: Enterprises that answer a high volume of RFPs and questionnaires.
Limitations. The entry price is high for small teams, and the page does not say whether the starting price is yearly. Setup takes time and planning.
7. AutoRFP.ai: Best for published RFP pricing and unlimited users
AutoRFP.ai is AI RFP software that drafts responses and manages your answer content.
What it does well. AutoRFP.ai is rare in this category because it publishes its prices. Plans are based on how many projects you run each year, not on seats, so you can invite sales, legal and product experts without paying for each one. Its AI drafts responses and helps manage your content.
Key features:
- AI response drafts
- AI content management
- Unlimited users on every plan
- 30-day money-back guarantee
Pricing. Scale is about $899 a month billed yearly for 24 projects a year. Accelerate is about $1,299 a month billed yearly for 50 projects a year. Enterprise pricing is flexible and scales with volume. Checked in October 2026.
Best for: Mid-size teams that want a clear budget and many contributors.
Limitations. The project caps can pinch if your RFP volume grows during the year. Billing is yearly, so it is a real commitment.
8. Inventive AI: Best for AI agents on complex RFPs
Inventive AI is AI RFP software that uses AI agents for each step of a response.
What it does well. Inventive AI goes beyond drafting answers. Its agents help with go or no-go decisions, win themes, competitive research and compliance checks. Its content manager scans your sources and flags answers that conflict or are out of date.
Key features:
- AI agents for go or no-go, win themes and compliance checks
- Knowledge hub that syncs SharePoint, Google Drive and Notion
- AI content governance that flags outdated answers
- SOC 2 compliance and integrations with Salesforce and Slack
Pricing. Inventive AI does not publish prices or list a free trial. You book a demo to get a quote. Checked in October 2026.
Best for: Teams that compete on high-value bids and want AI help with strategy, not just text.
Limitations. With no public pricing, it is hard to compare cost. Agent features still need careful human review on every bid.
Best General AI Assistants for Proposal Writing
9. ChatGPT: Best free option for first drafts
ChatGPT is OpenAI's general AI assistant.
What it does well. Give ChatGPT a short brief about the client, the problem and your offer, and it returns a full proposal outline or a first draft in seconds. It is also good at rewriting a section for a different tone or turning notes into an executive summary.
Key features:
- Drafts any proposal section from a brief
- File uploads for RFP documents and past proposals
- Web search for background on a prospect
- Projects to keep each deal's chats together
Pricing. Free costs $0 with usage limits. Go is about $8 a month and Plus about $20 a month, billed monthly. Checked in October 2026.
Best for: Freelancers and small teams who need a quick, free first draft.
Limitations. ChatGPT does not store approved answers, track proposals or collect signatures. It can invent facts and figures, so check every claim, price and date. For other options, see the best ChatGPT alternatives.
10. Claude: Best for reviewing long RFPs and drafts
Claude is Anthropic's AI assistant, known for careful reading of long documents.
What it does well. Upload a long RFP and ask Claude to list every requirement, deadline and scoring rule, or to check your draft against them. It writes in clear, natural prose. Several tools on this list, including Proposify, Qwilr and Loopio, can connect to Claude through MCP.
Key features:
- Reads and summarizes long RFP files
- Builds requirement and compliance checklists
- Gives detailed feedback on proposal drafts
- Connects to proposal tools through MCP
Pricing. Free costs $0. Pro is about $20 a month billed monthly, or about $17 a month when billed yearly. Checked in October 2026.
Best for: Proposal managers who need to break down long RFPs and review drafts.
Limitations. Like any chatbot, it has no content library, approvals or e-signatures, and usage limits can run out on long files. Check its output against the source document.
How Should You Choose an AI Proposal Writer?
Start with what you send most. Sales proposals and RFP responses need different tools:
- Freelancer or consultant: Better Proposals for sending and signing, plus ChatGPT or Claude for drafting.
- Small sales team: PandaDoc's free plan or Starter, which covers templates, AI drafting and signatures.
- Brand-focused sales team: Proposify for locked templates, or Qwilr for interactive web page proposals.
- Mid-size team answering RFPs: AutoRFP.ai for clear pricing and unlimited users.
- Enterprise RFP team: Loopio or Responsive for large content libraries, or Inventive AI for agent-based strategy help.
- Tight budget: Free plans of PandaDoc, ChatGPT and Claude cover drafting and basic sending.
Before you buy, run a trial on a real proposal you have already sent, then compare the AI draft to your final version. Give the AI a clear brief with the client's goals, your scope and your pricing rules.
Our guide on how to write better AI prompts shows how to write one. If you pitch with slides as well, see the best AI presentation makers.
How We Evaluated These AI Proposal Writers
We built this list from each tool's official pricing page, product pages and documentation, all checked in October 2026. Tools were ranked on drafting quality features, content reuse, the sales or RFP workflow around the writing, security and integrations, and how clear the pricing is.
This list is not based on scored sample proposals, so use free plans, trials or demos on your own documents first. Many RFP tools sell by quote, so confirm the final price and contract terms before you sign.
Can AI Write a Full Business Proposal?
Yes, AI can write a full first draft, but it should not send one without review. Given a good brief, tools like ChatGPT, Claude or the PandaDoc AI Assistant can draft an executive summary, scope, timeline and terms. What AI cannot know is your real costs, your capacity and the details of the client relationship.
Use AI for structure and wording, then have a person check every number, date, promise and legal term. Read the final version aloud or run it through an editor to catch awkward lines. Our list of the best AI grammar checkers can help with that last pass.
What Is the Difference Between Proposal Software and RFP Software?
Proposal software helps you create and send a sales proposal that you design. RFP software helps you answer a buyer's long list of questions, often hundreds of them, using answers your team has already approved.
PandaDoc, Proposify, Qwilr and Better Proposals focus on templates, pricing tables, tracking and e-signatures. Loopio, Responsive, AutoRFP.ai and Inventive AI focus on content libraries, expert review and project tracking for RFPs, RFIs and security questionnaires. Some teams use one of each.
Is It Safe to Upload Proposal Content to AI?
It can be, if you check the vendor's security and data rules first. Proposals often hold pricing, client names and product details that should stay private. Before you upload anything, read the vendor's security page, ask whether your data is used to train AI models, and check certifications such as SOC 2.
For business accounts, use team or enterprise plans with admin controls instead of personal chatbot accounts. Follow your company's AI policy and any rules in the RFP itself, since some buyers limit how their documents can be shared.
The Bottom Line
PandaDoc is the best AI proposal writer for most sales teams, with Proposify close behind for control and Qwilr the best pick for interactive proposals. Better Proposals is the budget choice.
For RFPs, Loopio and Responsive lead for large teams, AutoRFP.ai has the clearest pricing and Inventive AI offers agent-based help. ChatGPT and Claude are useful free drafting partners for any proposal.
Next steps: Decide whether you mostly send sales proposals or answer RFPs, start a free plan or trial, and test it on a real proposal. Keep a person reviewing every proposal before it goes out. For more tools, see our full list of the best AI writing tools.
Writing more than proposals?
Compare the best AI writing tools for drafts, emails, docs and more.
Frequently Asked Questions
What is the best AI proposal writer?
For most sales teams, PandaDoc is the best AI proposal writer, since it combines an AI Assistant, templates and e-signatures and has a free plan. Proposify and Qwilr are strong alternatives. For RFP responses, Loopio and Responsive lead for large teams, and AutoRFP.ai is the clearest priced option.
Is there a free AI proposal generator?
Yes. PandaDoc Free allows 5 documents a month, and ChatGPT and Claude both have free plans that can draft proposals. Proposify, Qwilr and Better Proposals offer 14-day free trials with no card needed.
What is the best AI RFP response software?
Loopio and Responsive are the best known choices for large teams with big answer libraries. AutoRFP.ai publishes its pricing, at about $899 a month billed yearly for 24 projects a year, and includes unlimited users. Inventive AI adds AI agents for strategy and compliance checks.
How much does AI proposal software cost?
Sales proposal tools start at about $13 to $39 a user a month billed yearly, checked in October 2026. RFP software costs much more: Responsive starts from about $10,000, AutoRFP.ai from about $899 a month billed yearly, and Loopio and Inventive AI are sold by quote.
Can ChatGPT write a proposal?
Yes, ChatGPT can draft a full proposal from a clear brief, and it is free to start. It does not track proposals, store approved content or collect signatures, and it can make up facts. Check every detail, then send the final version through a proposal tool or your email.