
The versatile AI assistant for writing, summarizing, and brainstorming.
Read the review →5 tools selected and reviewed
Writing a tailored sales proposal for each prospect takes hours, between scoping, pricing, and argument. These AI tools write a solid first draft from your brief, then you just tweak it.
Our selection, from generalist assistants to tools specialized in business writing.

The versatile AI assistant for writing, summarizing, and brainstorming.
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Anthropic's AI assistant, excellent at writing and document analysis.
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The AI writing platform built for marketing.
Read the review →| Tool | Best for | Price | FR | Level | Verdict | Rating | |
|---|---|---|---|---|---|---|---|
ChatGPT | The versatile AI assistant for writing, summarizing, and brainstorming. | Freemium | 🇫🇷 | Beginner | Excellent | ★ 4.8 | |
Claude | Anthropic's AI assistant, excellent at writing and document analysis. | Freemium | 🇫🇷 | Beginner | Excellent | ★ 4.8 | |
Jasper | The AI writing platform built for marketing. | Paid | 🇫🇷 | Intermediate | Good choice | ★ 4.0 | |
Notion AI | Your all-in-one workspace, powered by AI. | Freemium | 🇫🇷 | Intermediate | Very good | ★ 4.4 | |
Copy.ai | Automate your marketing content with end-to-end AI workflows | Freemium | 🇫🇷 | Beginner | Good choice | ★ 4.1 |
Claude and ChatGPT are most versatile for structuring a complete proposal from a detailed brief. Jasper brings templates designed for business documents and keeps a tone consistent with your brand.
Yes, as long as you give it client context (needs, sector, budget): ChatGPT and Claude then adapt tone and arguments, while Notion AI makes it easy to reuse already-written blocks from one proposal to the next.
We help you choose and set up the right tool for how you work.
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