Instinct’s Series B funding round raised $250 million at a $2.5 billion post-money valuation, bringing total raised to $350 million. The company disclosed the round to the Wall Street Journal on August 26, 2026, and TechCrunch reported it on August 27, 2026. The $250 million follows earlier rounds reported by Forbes. Instinct is operated by Spear Street Technology in San Francisco; TechCrunch describes it as founded in 2025, while Forbes reports the entity was registered in April 2026. Index Ventures and Benchmark co-led the round; per-investor amounts were not disclosed. Forbes describes at least three rounds without disclosing each round’s date. The $2.5 billion post-money valuation is at least a 5x step-up from the Series A price.

TechCrunch reported on August 27, 2026, citing a Wall Street Journal interview, that the round was co-led by Index Ventures and Benchmark. The disclosure did not identify either co-lead as a first-time backer of the category, and fund vintage for the participating vehicles was not disclosed. Forbes named prior-round leads: Sarah Guo of Conviction and Neil Mehta of Greenoaks, whose early round valued Instinct above $100 million, and Mamoon Hamid of Kleiner Perkins, who led a $75 million Series A in early August 2026 above $500 million. Insider participation in the Series B was not disclosed, nor was a use of funds. Instinct had not confirmed the Wall Street Journal account through its own channels as of August 27, 2026. The disclosure came two days after TechCrunch’s August 24, 2026 privacy report, suggesting the financing was already in motion.

A private beta agent wired into email and devices

Instinct is an AI personal assistant that connects to a user’s email, messaging apps, calendar and device sensors, including audio, location and screen, according to TechCrunch’s privacy report dated August 24, 2026. The company’s site describes the agent as trained to use a phone and a computer, reachable by text or call, per Forbes. Access is invite-only and in private beta, and no revenue, ARR or customer count has been disclosed. Founder Noah Shinn is 23 years old and a former Sierra research scientist, according to TechCrunch. TechCrunch also says the company’s own bot identifies Luca Borletti, formerly of Sierra, as involved, a claim it reports as unconfirmed. “I’m thrilled with everything our early users are doing with Instinct,” Shinn wrote in a post on X on August 26, 2026, according to TechCrunch. “They’ve told us they’ve planned cross-country road trips, bought weekly groceries and concert tickets, and cancelled hundreds of dollars of subscriptions. Someone’s even planning their wedding with Instinct.”

Cap table math and the step-up multiple

Verified investors across Instinct’s prior funding history: Conviction and Greenoaks, whose early round valued the company above $100 million; Kleiner Perkins, which led the $75 million Series A at a valuation above $500 million in early August 2026; and Index Ventures and Benchmark, co-leads of the $250 million Series B at a $2.5 billion post-money valuation. Per-investor dollar amounts are undisclosed for every round, and special financial terms such as preferred equity structure were not stated. The step-up from the Series A price is at least 5x ($2.5 billion ÷ $500 million = 5x), a move Forbes described as a fivefold jump in weeks. No ARR figure has been published for Instinct, so the revenue multiple is unknown. A comparable deal with a disclosed price: EliseAI, reported by Business Insider on August 17, 2026 to be in talks for $300 million at a $3.7 billion valuation.

Where comparable assistant deals sit

The round targets a category that emerged in 2026. Interest in personal AI assistants has grown since OpenClaw, whose founder joined OpenAI to work on next-generation personal agents, while messaging assistant Poke exited to Cognition, according to TechCrunch. For scale, Town, an AI assistant for inboxes and calendars, announced a $55 million Series A in June 2026 with Andreessen Horowitz and Forerunner participating, per Business Insider’s consumer tech roundup. The target segment is general consumers seeking personal organization, not enterprise buyers. “Having an AI product you trust to execute transactions on your behalf and navigate websites is amazing,” Sarah Guo wrote on X earlier in August 2026, according to Forbes. “It gets it right, from Michelin restaurants to marathon entries, to camping ressies to general purchases (all executed well).” No exit scenario or time to liquidity was disclosed; Forbes reports the product is free and that monetization could come via subscription or advertising.

The central risk is legal rather than competitive. TechCrunch reports that Instinct’s terms of service grant a “perpetual and irrevocable” license to access, store and modify user materials, including for model training, and describe collection of screen captures and keyboard inputs. AI founder Claire Vo posted that the agent kept accessing her Gmail after she disconnected it, according to Forbes. Burn rate, dilution and revenue are undisclosed, so the investment thesis rests on engagement. Source caveat: TechCrunch’s figures trace to one Wall Street Journal interview, and Yahoo Finance republished the same article, so the $250 million and $2.5 billion numbers are single-source. Final terms could still differ, since Forbes reported the round as in talks on August 26, 2026.

What the Instinct round signals

How much did Instinct raise, and at what valuation? Instinct raised $250 million in a Series B at a $2.5 billion post-money valuation, bringing total raised to $350 million, according to TechCrunch’s account of the company’s Wall Street Journal interview on August 26, 2026.Who led the round, and what else is on the cap table? Index Ventures and Benchmark co-led the Series B. Per-investor amounts, additional co-investors and special financial terms were not disclosed.What was Instinct’s prior funding history? Forbes reports an early round led by Sarah Guo of Conviction and Neil Mehta of Greenoaks above a $100 million valuation, then a $75 million Series A led by Mamoon Hamid of Kleiner Perkins in early August 2026 above $500 million.Does Instinct generate revenue? No ARR, MRR or customer count has been disclosed, and Forbes reports the product is free during private beta, so the revenue multiple is unknown.What is driving the privacy criticism? TechCrunch reports terms-of-service language granting a perpetual and irrevocable license over user materials, including for model training, and describing collection of screen captures and keyboard inputs.Instinct’s $250 million Series B at a $2.5 billion post-money valuation prices a private-beta assistant with no disclosed revenue. The verified figures show at least a 5x step-up from the Series A price within August 2026, which indicates capital is being allocated on distribution potential rather than audited traction. The unresolved item is the permissions model: the same access TechCrunch documents as the product’s capability is the access its terms-of-service reporting flags as the liability.