AI Tools for Founders This Week: Manus Cue, Persona, Melius and Grep

Four AI products reached founders in the space of ten days. Manus launched Cue on 28 September 2026, Melius announced $25 million in funding on 6 October, Persona announced a $10 million round on 8 October, and Grep announced itself on 5 October. Only Melius is a conventional paid product today. The rest are free betas, invite-only access or credit-based tools with unpublished rates.

All pricing and access details below were last checked on 13 October 2026. Funding figures and usage numbers are what the companies or press reported, not audited figures.

Which AI tools for founders are worth a look this week?

It depends on the job. Cue is a personal agent that can act for you, Persona is a personal assistant you reach by text, Melius makes ad creative, and Grep runs research and compliance-style workflows. They are not substitutes for each other, so this is a menu, not a ranking.

What is Manus Cue and can founders use it now?

Cue is a standalone personal-agent app from Manus. Each agent gets its own email address, phone number, wallet and computer, and Manus says it can send messages, pay within a budget you set, and take your calls and leave a summary in the app.

Access is limited. Manus says Cue is in early access and free to use with an invite code, available on web, desktop and mobile, with iOS coming after App Store review. Manus has not published what Cue will cost once early access ends.

Cue launched alongside Manus 2.0. Manus describes a new agent harness called Cascade and event-triggered automations that can start from a new email, a Slack message, a calendar event or a Notion update. The company says that in one configuration, Cascade used 23.2% fewer tokens, finished tasks in 28.2% less time and cost 32% less to run than its previous system. Those are Manus's own figures, from one configuration, with no test method described.

Group chats are the feature most relevant to a small team. Manus's example has one agent researching venues, a second shortlisting them and a third drafting a deck. The context matters too. TNW reports that the launch came five months after Beijing ordered Meta's roughly $2 billion deal for Manus cancelled. A founder who wants to give an agent a wallet should weigh that corporate uncertainty, though no source says it affects the product.

What is Persona and how much does it cost?

Persona is a personal AI assistant from Zach Yadegari, the 19-year-old co-founder of Cal AI. TechCrunch reports a $10 million round led by Vine Ventures, with Cory Levy of Z Fellows and Collective Global participating. The round carries no label such as seed, and the valuation is not disclosed.

The assistant is a free beta that users reach through iMessage text messages. TechCrunch names ordering food or rides, taking notes, booking travel and answering questions and emails as tasks. Yadegari told TechCrunch the beta has a few thousand users and that Persona has taken five figures in preorder revenue. Both are founder claims.

The hardware is optional. Persona's band page lists an early-bird price of $179, crossed out from $219, for the first batch only. It is a one-time price with no subscription, and Persona says preorders ship in December. The band has a button, or a wrist flick, to activate the assistant, and it is not always listening.

On cost to you, the assistant is free today, but TechCrunch says Persona currently relies on ads shown during shopping research. Yadegari says the agent will not know which items are advertised. Founders handling customer data should read that alongside his privacy claims: the model runs in Persona's cloud, data is encrypted and deletable, and purchases need user approval.

Cal AI background, per TechCrunch: MyFitnessPal acquired it in March 2026 for an undisclosed sum, and MyFitnessPal told TechCrunch at the time that it had over $30 million in annual revenue in under two years. Yadegari left in June.

What does Melius do and what does it cost?

Melius makes AI tools for ad creative. TechCrunch describes a platform that generates ad campaigns, images and videos from plain-language instructions, which the company calls an "agents lab for creative work." Melius's site shows a node-based canvas for image, video and audio, with an agent called Mel that wires the nodes and picks models.

The funding is $25 million in total: a $20 million Series A led by CRV and a $5 million seed led by General Catalyst. The TechCrunch headline uses $20 million, which is the Series A alone. The founders are Joowon Kim, Young Kim and Arnav Ramu, all former Ramp engineers in New York.

The company is also a pivot story. It first built an AI tool for managing ad spend, and after more than six months decided it did not have legs. Joowon Kim told TechCrunch: "We scrapped the entire codebase; we burned all of it." It came out of stealth in July 2026 and says it passed $1 million in annualized revenue within two months. TechCrunch did not independently verify that claim.

Pricing, as of 13 October 2026, works on credits. Sign-up is free, but generation needs credits from a paid plan or a one-time purchase. The FAQ says paid plans start at $18 per month. The Creator plan includes 20,000 credits a month, which Melius equates to about 300 images or 14 videos. Check the live pricing page before budgeting.

What is Grep and how is it priced?

Grep is a managed agent platform from Parcha Labs, Inc. Its site says agents learn from each run and turn repeated steps into reusable code and workflows, with smaller models and code handling repeated steps and frontier models handling judgment and exceptions. It lists 100+ data sources, 250+ skills and 25+ built-in expert agents, and example uses include company research, sanctions screening, business verification and contract review.

Digg reports that AJ Asver announced it on 5 October, and that Grep is in Y Combinator's Fall 2026 batch. Grep says it is backed by Y Combinator, Kindred Ventures and Initialized, without giving amounts.

Access is self-serve. Grep says you can sign up, start on credits and run an agent the same day. Public rates are unpublished, and teams spending $50,000 or more per month get a working session. Without a price list, a founder cannot forecast cost before trying it.

The headline claim is Asver's: customers including IG, Airwallex, Worldpay, FV Bank and Citizens Bank have saved more than 250,000 hours of operational work. That is company-reported, and Digg notes the announcement gives no measurement period or method. Grep also reports a 91% lower model cost per alert in an anti-money-laundering evaluation against a Claude agent baseline, on a workload it labels illustrative.

How should a founder choose between them?

Match the tool to the job, and start with the cheapest test.

What are the risks of these AI tools?

The shared risk is that headline numbers are self-reported. Manus's Cascade savings, Melius's revenue, Persona's user count and Grep's saved hours all come from the companies. None has a published methodology that an outsider can reproduce.

Giving agents spending power is a second risk. Cue's wallet works within a budget the user sets, and Persona says purchases need approval. Set the lowest budget that lets you evaluate the product, and keep company cards out of any early-access agent.

Market crowding is a third. TechCrunch names Higgsfield, valued at $5.4 billion in August, along with Krea and Flora AI as Melius competitors. A young creative tool is competing against well-funded rivals.

What's still unclear?

Several points have no answer in public sources as of 13 October 2026.

• Cue pricing. Manus has not said what Cue will cost after early access.
• Persona's app. TechCrunch says an app is in the works, with no date.
• Melius pricing. Melius's FAQ says paid plans start at $18 per month, and the plan tiers are not clearly labelled monthly or annual.
• Grep's rates. Rates are unpublished.
• Persona's round. TechCrunch gives no round label or valuation.
• Independent testing. None of these products has independent test results behind it, so treat each as a candidate for a small trial.

Last checked: 13 October 2026.