This looks useful for no-code team members to create embeddings for LLM.
Since you're looking for feedback...
The "New Way" section would benefit from simplifying into a single flow chart with just two steps. Then move the existing 4 blocks to a features section.
Also would be great to have simple use cases on the landing page and link to the current Use Cases page for details. On the Use Cases page, I would get rid of the graphics. They don't convey much info and distract from the screenshots.
Maybe add a page for product comparisons. Without playing with the product first, it's a bit unclear to me how my no-code teams would prefer Fleak over their current tools (Make.com, n8n, Pabbly, Zapier, etc.).
The pricing page is somewhat of a deal breaker for my team to even spend time testing the product. The only option (free tier) seems to have really limits like 1 request / sec. And there's not enough info to understand how max events and other rate limits play together. I would keep the 1 user, 5 pipeline, token limits, and 500 requests (pipeline executions?) per month. Then remove the other limits. Alternatively, offer a Pro tier with a free month trial with higher limits.
Also on the pricing page, it would be great to list out a few use cases as examples of what's possible within the limits of each tier.
Hope this helps! And best of luck. It looks like a promising product.