Jacob Effron
@jacobeffron
Managing Director @redpoint supporting @AbridgeHQ @ideogram_ai @tryramp @poolsideai @AcuityMD @scribehow @wearelegora @getgarner / AI pod: Unsupervised Learning
New Unsupervised Learning with Google AI researchers @NoamShazeer and @jack_w_rae on: - Scaling test-time compute - The power of the Mom eval - The pace of Open Source / DeepSeek - How AI research is where chemistry was in the 15th century - Reactions to Ilya on how…

Extremely fun conversation - we talked a lot about what the next few years might look like, what kinds of long running agency are now possible, and what companies and countries should do in response.
New episode with @_sholtodouglas (Member of Technical Staff, @AnthropicAI) on how Claude 4 is reshaping coding, research, and the future of work: - What is newly enabled by Claude 4 - AI's impact today on AI research - Timeline to automation of all white-collar jobs - AI 2027…
New episode with @_sholtodouglas (Member of Technical Staff, @AnthropicAI) on how Claude 4 is reshaping coding, research, and the future of work: - What is newly enabled by Claude 4 - AI's impact today on AI research - Timeline to automation of all white-collar jobs - AI 2027…
Introducing the next generation: Claude Opus 4 and Claude Sonnet 4. Claude Opus 4 is our most powerful model yet, and the world’s best coding model. Claude Sonnet 4 is a significant upgrade from its predecessor, delivering superior coding and reasoning.
Feeling deeply grateful as I start this next chapter at Redpoint as a Managing Director. This is truly a dream job. It’s such a privilege to partner with inspiring founders and companies shaping the future. And I’m so lucky to have found a home at Redpoint where I continue to be…
We’re excited to share that @jacobeffron has been promoted to Managing Director at Redpoint. Since joining the firm in 2020, Jacob has built a reputation as one of the most thoughtful and trusted voices in venture. His investments in companies such as @AbridgeHQ , @WeAreLegora,…
What are the new table-stakes AI features for SaaS? When mobile first emerged, most apps were just wrappers around desktop features, until a new generation of products were built natively for mobile habits, constraints, and capabilities. On Unsupervised Learning @Sirupsen told…
New Unsupervised Learning with @hausman_k & @DannyDriess (@physical_int) on building generalist robotics foundation models and: - What’s next in AI x robotics - Biggest outstanding questions - How they 10x’d model training speed - Open sourcing π 0 - Breakthroughs…
Abridge raises $300M Series E funding round led by @a16z, and joined by @khoslaventures to pioneer a new paradigm of care with intelligence at the point of conversation. 🚀 @DavidGeorge83, 𝗚𝗲𝗻𝗲𝗿𝗮𝗹 𝗣𝗮𝗿𝘁𝗻𝗲𝗿 𝗮𝘁 𝗔𝗻𝗱𝗿𝗲𝗲𝘀𝘀𝗲𝗻 𝗛𝗼𝗿𝗼𝘄𝗶𝘁𝘇: “Abridge…
New Unsupervised Learning with @istoica05 Co-Founder @databricks, @anyscalecompute, and @lmarena_ai - and special guest host @_RobToews on: - Why Ion and the team turned a research project into the company LMArena - Why evaluating LLMs is so much harder than it looks - Why…

The Redpoint InfraRed 100 is now live! This list honors 100 infrastructure innovators who are transforming how businesses scale, secure, and succeed. Check out this year's honorees and dive deeper with the dynamic list and our complete InfraRed Report linked below.
New Unsupervised Learning with @mercor_ai CEO @BrendanFoody and @patrickachase on: - Why most knowledge workers will be primarily creating evals in the future - How AI is already outperforming humans in hiring - The meeting with xAI that changed Mercor’s trajectory - AI…

Honored to be on the 2025 Midas Brink List with such a great group - very thankful to the founders, teams and colleagues who make this job so incredible!
Spotlighting Venture’s Rising Stars: The 2025 Forbes Midas Brink List trib.al/Z9fcYcY #ForbesMidas
Really fun having @MaxJunestrand (CEO of our portfolio company @WeAreLegora) on Unsupervised Learning with @loganbartlett fresh off announcing their $80M Series B last week. Working with Max and the Legora team has been an absolute blast and I think folks will really enjoy Max's…

New Unsupervised Learning with @AI_Futures_ Researchers @DKokotajlo and @thlarsen on: - Unpacking AI 2027 - Current alignment research and what's working / not working + challenges ahead - The path to AI dramatically accelerating AI research - The race between model…

had a blast chatting with jacob about gpt-4.1!! learn a little more about how we built it and the latest on how to make agents work well in prod
Super fun to get one of @OpenAI 's GPT 4.1 Leads @michpokrass's thoughts on RFT (launched yesterday) and more on Unsupervised Learning. Some of my favorite parts: ▪️How OpenAI built GPT-4.1 by focusing on developer feedback over benchmarks ▪️Where agents work and what needs to…
Super fun to get one of @OpenAI 's GPT 4.1 Leads @michpokrass's thoughts on RFT (launched yesterday) and more on Unsupervised Learning. Some of my favorite parts: ▪️How OpenAI built GPT-4.1 by focusing on developer feedback over benchmarks ▪️Where agents work and what needs to…
Remember reinforcement fine-tuning? We’ve been working away at it since last December, and it’s available today with OpenAI o4-mini! RFT uses chain-of-thought reasoning and task-specific grading to improve model performance—especially useful for complex domains. Take…
My top resources for learning AI: Newsletters: @TheRundownAI, @emollick, @every Podcasts: - Training Data @sequoia - Unsupervised Learning @jacobeffron @Redpoint - AI & I @danshipper - Lenny's @lennysan - Latent Space @swyx - Behind the Craft @petergyang - AI Daily Brief @nlw
🎙️New Vital Signs with @photonhealth CEO @ottosipe and @nikillinit on: - How software will disrupt PBMs - Why GLP-1s are breaking the PBM model - Where is the value in E-Prescribing? - The current and future state of pharmacies Spotify: bit.ly/44oFYHv Apple:…
