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▶ 61:18 · $OPENAI · $ANTHROPIC · $SOUND-VENTURES · Sound Ventures (Guy Siri) built $1B+ position in OpenAI and Anthropic across primary and secondary rounds
episode briefing
TBPN

Fruitfly Hard Takeoff, Parker's Vineyard, Personal Agents

2026-09-11 · 26 company · 43 thematic
sentiment
16 bull0 bear10 neu
speakers
mitesh agarwal

Chemical engineering background; co-founded Lambda (neocloud) with Stephen Balivan; joined Positron in early 2025 to commercialize memory-optimized inference chips. Raised $875M; deployed FPGA-based Atlas racks at Oracle; taping out custom ASIC for 2H27.

guy siri

Music industry veteran turned venture capitalist; early investor in OpenAI, Anthropic, and Hugging Face with near $1B deployed across the two foundational model labs. Applies talent-spotting intuition from A&R to founder selection.

alex

Alex Schultz is the Chief Marketing Officer at Meta, author of 'Click Here: The Art and Science of Digital Marketing and Advertising', and former growth leader at Meta overseeing ads ranking, engagement systems, and AI infrastructure.

john coogan

Co-host of TBPN, a live technology and business show focused on startups, venture capital and Silicon Valley.

quote
“we put a lot of money into anthropic on the way up. We put a lot of money into OpenAI on the way up. And um I think we have close to a billion dollars worth of of of money uh invested into those two companies.”
—guy siri
now playing · $OPENAI · $ANTHROPIC · $SOUND-VENTURES
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$MAVERICKbullish· high· posguy siri
Guy Siri's Maverick fund partnered with Sound Ventures on foundational AI bets including OpenAI, Anthropic, Hugging Face
Maverick and Sound Ventures operated as a combined vehicle for early AI infrastructure bets, achieving outsized returns that now raise the hurdle rate for subsequent investments.
$HUGGING-FACEbullish· medium· posguy siri
Guy Siri and Betaworks' John both backed Hugging Face; Siri calls it a foundational platform bet
Hugging Face was identified early as a long-standing foundational platform in the AI stack, with Betaworks entering at seed and Sound Ventures participating in later rounds.
$OPENAIbullish· high· posguy siri
Sound Ventures' Guy Siri deployed near $1B into OpenAI and Anthropic across multiple rounds
Siri's fund was an early conviction investor in both foundational model labs, continuing to double down through later rounds, and now views the current landscape as far more crowd…
$ANTHROPICbullish· high· posguy siri
Sound Ventures' Guy Siri deployed near $1B into OpenAI and Anthropic across multiple rounds
Siri's fund was an early conviction investor in both foundational model labs, continuing to double down through later rounds, and now views the current landscape as far more crowd…
$SOUND-VENTURESbullish· high· posguy siri
Sound Ventures (Guy Siri) built $1B+ position in OpenAI and Anthropic across primary and secondary rounds
Early conviction in foundational model labs compounded through aggressive follow-on participation; the fund now faces a higher bar for new investments given the benchmark set by t…
$HUGGING-FACEbullish· medium· posguy siri
Sound Ventures backed Hugging Face in later rounds after Betaworks seeded it
Guy Siri confirms Sound Ventures invested in Hugging Face, noting Betaworks' John came in at seed and did very well, while Sound Ventures participated in later rounds.
$BETAWORKSneutral· mediumguy siri
Betaworks' John seeded Hugging Face; Sound Ventures entered later but both profited
Entry price matters hugely in venture: Betaworks' seed position in Hugging Face outperformed Sound Ventures' later entry, illustrating the power of early conviction in platform pl…
$SNAP···neutral· mediumalex
Alex Heath wouldn't be surprised if Instinct surpasses Snap valuation; new AI category creates second-mover advantage
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$INSTINCTbullish· mediumalex
Alex Heath sees Instinct as unique personal-agent startup with forgiveness advantage over Big Tech incumbents
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$POSITRONbullish· highmitesh agarwal
Positron raises $875M to build inference chips using commodity memory
Positron targets the inference market with a differentiated architecture using commodity LPDDR5X memory to bypass HBM/CoWoS bottlenecks, has deployed FPGA-based Gen1 at Oracle and…
$LAMBDAneutral· mediummitesh agarwal
Positron's Mitesh Agarwal leaves Lambda (neocloud) after reasoning models and video gen reveal memory bottleneck
Lambda's hockey-stick growth coincided with the emergence of reasoning and video generation models that are severely memory-bound; Agarwal joined Positron to attack the memory wal…
$GOOGL···neutral· highmitesh agarwal
Google's VO video model requires 4 H100s for 10-second clip, exposing memory-bandwidth bottleneck
Video generation workloads are completely memory-bound on both bandwidth and capacity, validating the thesis that inference infrastructure must optimize for memory over raw comput…
$NVDA···neutral· highmitesh agarwal
Positron CEO says Nvidia's 12-month chip cadence forces competitors to match pace or exit
Nvidia's annual silicon refresh cycle (Blackwell, Rubin, etc.) sets a brutal pace; any inference chip startup must demonstrate a credible path to volume production at gigawatt sca…
$POSITRONbullish· high· posmitesh agarwal
Positron raises $875M to build memory-optimized inference chips; first-gen FPGA deployed at Oracle, ASIC taping out 2026
Inference is becoming memory-bandwidth and capacity bound (video gen needs 4 H100s for 10-sec clip); Positron's architecture uses commodity LPDDR5X to bypass HBM bottlenecks, ship…
$ORCL···bullish· highmitesh agarwal
Positron deploys 50 Atlas FPGA racks at Oracle as first production customer
Oracle's deployment of Positron's first-gen FPGA-based Atlas racks provides critical revenue and validation for the memory-centric inference architecture ahead of custom ASIC tape…
$NVDA···bullish· highjohn coogan
Gavin Baker tells Positron board: 1% AI chip share equals $100B enterprise value
With Nvidia at a $5T market cap heading toward a $10T TAM, capturing just 1% of the AI accelerator market represents a $100B opportunity, making the prize for credible challengers…
$POSITRONbullish· high· posmitesh agarwal
Positron raises $875M to build inference chips using commodity memory to bypass HBM bottleneck
Mitesh Agarwal argues Positron's architecture solves the HBM/CoWoS supply constraint by using commodity LPDDR5X memory, enabling faster scaling to hundreds of megawatts for hypers…
$POSITRONbullish· highmitesh agarwal
Positron raises $875M to attack memory bottleneck in AI inference
Positron targets the memory bandwidth/capacity wall for inference with commodity memory architecture, aiming for gigawatt-scale deployments by 2028-2032 after tape-out this year.
$VENTURE-TECH-ALLIANCEneutral· mediummitesh agarwal
Venture Tech Alliance on Positron cap table to secure TSMC fab capacity for gigawatt-scale roadmap
Strategic investors like VTA provide not just capital but supply-chain credibility; TSMC requires visibility into a startup's balance sheet and customer commitments before allocat…
$POSITRON-AIbullish· high· posmitesh agarwal
Positron AI raises $875M to challenge Nvidia on inference with memory-optimized ASICs
Mitesh Agarwal reveals Positron has raised $875M, deployed FPGA-based first-gen at Oracle, and is taping out ASICs for 2027 production targeting hundreds of megawatts at hyperscal…
$BX···neutral· mediummitesh agarwal
Positron will need Blackstone-style infrastructure capital to finance gigawatt-scale deployments
Equity capital alone ($875M raised) is insufficient for 200MW+ deployments; chip companies must partner with infrastructure funds (Blackstone, etc.) to finance the CapEx of hypers…
$SPCX···neutral· mediummitesh agarwal
Positron engaging SpaceX as sophisticated inference customer with custom optimization demands
Frontier customers like SpaceX, Anthropic, and OpenAI demand deep co-optimization and will bring their own software stacks to extract maximum efficiency from alternative silicon.