# Letter AI funding: rounds and investors > Letter AI has raised $43M across 2 rounds since 2024. Investors include Y Combinator, Pioneer Fund and Battery Ventures. Every round with its source. Source: https://millionrounds.com/company/letter-ai (Millionrounds; every figure on the page links to its filing or article) United States · [Series B startup](https://millionrounds.com/companies) # Who invested in *Letter AI* 2 rounds we have observed, with the 8 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. AI Big Data & Analytics Salestech Raised 8 months ago Follow Letter AI and see its new rounds in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Fcompany%2Fletter-ai) Funding summary Updated 5 Nov 2026 **$43M** raised across 2 rounds since 2024, from 2 sources **$2.7M** Seed **$40M** Series B - **Latest round:** Series B, $40M Feb 2026 - **Led by:** Battery Ventures - **Step-up i:** 14.8× - **Investors:** 8 (1 led) See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2025 2026 **$2.7M** Seed **$40M** Series B - **First round:** Seed, $2.7M - **Biggest round:** $40M - **Between rounds:** 21 months ## The rounds - **Feb 2026** Series B **$40M** *4 new* *2 returning* [Battery Ventures](https://millionrounds.com/fund/battery-ventures) Lead [Y Combinator](https://millionrounds.com/fund/y-combinator) [Pioneer Fund](https://millionrounds.com/fund/pioneer-fund-2) [Lightbank](https://millionrounds.com/fund/lightbank) [Stage 2 Capital](https://millionrounds.com/fund/stage-2-capital) [Northwestern Mutual](https://millionrounds.com/fund/northwestern-mutual-future-ventures) Reported by Ventureburn - **Jun 2024** Seed **$2.7M** *4 new* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Pioneer Fund](https://millionrounds.com/fund/pioneer-fund-2) [Soma Capital](https://millionrounds.com/fund/soma-capital) [TechNexus Venture Collaborative](https://millionrounds.com/fund/technexus-venture-collaborative) Source recorded ## Founders and team From Letter AI's own website: 5 on the team. - **Josh Allen** Chief Revenue Officer - **Danny Wasserman** Global Head of Enablement & Programs - **Cam Barnes** Business Success Director - **Property Ownership Contract** DESIGNER OWNS (style these on.home_hero_rotate in Webflow): - **Vijay Gopal** Lenovo Solutions & Services Lead ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Seed** 2024 **Series B** 2026 [Y Combinator](https://millionrounds.com/fund/y-combinator) [Pioneer Fund](https://millionrounds.com/fund/pioneer-fund-2) [Battery Ventures](https://millionrounds.com/fund/battery-ventures) L [Soma Capital](https://millionrounds.com/fund/soma-capital) [Lightbank](https://millionrounds.com/fund/lightbank) [Stage 2 Capital](https://millionrounds.com/fund/stage-2-capital) [TechNexus Venture Collaborative](https://millionrounds.com/fund/technexus-venture-collaborative) [Northwestern Mutual](https://millionrounds.com/fund/northwestern-mutual-future-ventures) ## Everyone who backed them [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **2** rounds [Pioneer Fund](https://millionrounds.com/fund/pioneer-fund-2) Private equity **2** rounds [Battery Ventures](https://millionrounds.com/fund/battery-ventures) VC firm **1** round, led 1 [Soma Capital](https://millionrounds.com/fund/soma-capital) VC firm **1** round [Lightbank](https://millionrounds.com/fund/lightbank) VC firm **1** round [Stage 2 Capital](https://millionrounds.com/fund/stage-2-capital) VC firm **1** round [TechNexus Venture Collaborative](https://millionrounds.com/fund/technexus-venture-collaborative) Accelerator **1** round [Northwestern Mutual](https://millionrounds.com/fund/northwestern-mutual-future-ventures) Private equity **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=letter-ai). ## Also claim to have backed them This firm lists Letter AI as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above. [Formus Capital](https://millionrounds.com/fund/formus-capital) VC firm Per its own site ## Quick answers about Letter AI ### Who invested in Letter AI? Letter AI's investors include Y Combinator, Pioneer Fund, Battery Ventures, Soma Capital and Lightbank, and 3 more on record. Battery Ventures led its latest round. ### How much has Letter AI raised? Letter AI has raised $43M across 2 rounds since 2024. ### When did Letter AI last raise? Letter AI's most recent round was a Series B of $40M in Feb 2026, led by Battery Ventures. ### What was Letter AI's biggest round? Its most recent round, $40M in Feb 2026, is also its largest on record. ### Who backed Letter AI first? Letter AI's first round on record, in Jun 2024, was backed by Y Combinator, Pioneer Fund and Soma Capital and 1 others. ### What stage is Letter AI at? Letter AI's latest named round is a Series B, in Feb 2026. ### Where is Letter AI based? Letter AI is based in the United States. ### Who led Letter AI's rounds? Battery Ventures led the Series B in 2026. ## Companies like Letter AI In the same sector, and raised in the last eighteen months. 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