Mitch Wainer

Past: @DigitalOcean Co-Founder & CMO. Current: CEO & CoFounder @ Source (attribution software), Managing Partner @ Maximize (developer marketing agency)

[Mitch Wainer @MitchWainer]

🚨 Public Beta: Source is live!

Attribution is broken. We’re building a new AI-powered platform for B2B growth teams - and we’re launching it early.

It’s rough. It’s raw. But it works. If you're tired of flying blind with your marketing spend, Source shows you what organic and paid channels are actually driving the best leads and new customers. It’s a truth machine for marketers who want answers - not spreadsheets.

This is the public beta. You’ll hit bugs. You’ll hit breakthroughs. You’ll help shape the future.

Join us. Rip it apart. Help us make it better. Let’s rebuild attribution from the ground up.

💥 Bonus: The first 100 beta users get free 1:1 consulting time with me. I’ll personally dig into your data, unpack your funnel, and help you steer your marketing strategy in the right direction.

Sign up for the free public beta 👉 https://t.co/NPm5ieJvH6

[Mitch Wainer @MitchWainer]

@suni_code https://t.co/YB8p1i5u8j AI-powered attribution

[Mitch Wainer @MitchWainer]

So proud of our client, Hexo Labs, as they announce their open source self improving AI called SIA. Superintelligence is becoming a closer reality to solve the worlds most challenging problems.

[Kunal Bhatia @kunalbhatia91]

Superintelligence will be built on Self Improvement.

Today @hexoai, we’re excited to release ‘SIA’ - an open-source Self-Improving AI, to achieve any goal through recursive self improvement.

While trying to solve a problem, SIA doesn't just improve it's abilities by updating it's harness, it updates it's own weights as well.

[Kunal Bhatia @kunalbhatia91]

Superintelligence will be built on Self Improvement.

Today @hexoai, we’re excited to release ‘SIA’ - an open-source Self-Improving AI, to achieve any goal through recursive self improvement.

While trying to solve a problem, SIA doesn't just improve it's abilities by updating it's harness, it updates it's own weights as well.

[Mitch Wainer @MitchWainer]

@tech_power36661 [email protected]

[Mitch Wainer @MitchWainer]

We’re hiring two senior roles (remote) at Maximize as we continue to grow our work with developer-first startups across AI, infrastructure, data, and developer tools.

Open roles:
• Head of Brand Marketing
• Head of Lifecycle Marketing

At Maximize, we operate as embedded GTM partners for companies like Turso, Estuary, OpenHands, Appfarm, Blaxel, and others building highly technical products for engineers.

We’re looking for operators who love shipping real work, working directly with founders, and helping technical companies find clarity in their positioning, growth, onboarding, retention, and go-to-market strategy.

The Brand Marketing role is focused on positioning, messaging, narrative, brand systems, and website strategy.

The Lifecycle Marketing role is focused on PLG lifecycle strategy, onboarding, activation, retention, expansion, and growth infrastructure.

If you feel that you could be a great fit or have anyone that comes to mind, please feel free to DM or email me directly at [email protected].

[Mitch Wainer @MitchWainer]

@tech_power36661 Can you email me your LinkedIn profile link and a little blurb about yourself and why you would be a good fit for the role?

[Alexander Whedon @alex_whedon]

Introducing SubQ - a major breakthrough in LLM intelligence.

It is the first model built on a fully sub-quadratic sparse-attention architecture (SSA),

And the first frontier model with a 12 million token context window which is:

- 52x faster than FlashAttention at 1MM tokens
- Less than 5% the cost of Opus

Transformer-based LLMs waste compute by processing every possible relationship between words (standard attention).

Only a small fraction actually matter.

@subquadratic finds and focuses only on the ones that do.

That's nearly 1,000x less compute and a new way for LLMs to scale.

[Mitch Wainer @MitchWainer]

@solomonstre @tursodatabase

[Blaxel @blaxelAI]

Blaxel is officially a first-class sandbox provider in the new version of @OpenAI Agents SDK.

Your agents now have shell, file I/O, and live preview URLs, all running in isolated cloud sandboxes on Blaxel infra.

https://t.co/7sPjOmNEWk

[Mitch Wainer @MitchWainer]

@jedgar @andyhattemer @moiseyuretsky Did we partner with them on design work?

[Mitch Wainer @MitchWainer]

@andyhattemer @jedgar The original Sammy was designed in photoshop. Inspired by @moiseyuretsky's dog toy.

[Mitch Wainer @MitchWainer]

@jedgar @andyhattemer <3 you are a branding genius as well

[Mitch Wainer @MitchWainer]

@ashl3ysm1th So great catching up @ashl3ysm1th! That convo was 🔥 really appreciate you coming on.

[Ashley @ashl3ysm1th]

So good to catch up with you @MitchWainer!!!!

[Mitch Wainer @MitchWainer]

On this week's episode of Growth Journal, I speak with Ashley Smith @ashl3ysm1th, Founder and Managing Partner of @vermilionfund, about what's really happening in venture and why AI is changing everything faster than anyone expected.

Episode 2 with Ashley Smith out now https://t.co/xe6mQd5IJP

[Mitch Wainer @MitchWainer]

@sgy Unfortunately I do not anymore. I would reach out to @paddix. :)

[Mitch Wainer @MitchWainer]

@SaaS_CMO_Pro Always learning from you!

[Mitch Wainer @MitchWainer]

The best ideas rarely come from staying in your bubble. Pull from B2C, make B2B more human, and remember marketing starts the moment a user touches the product.

Episode 2 with Bill Macaitis @SaaS_CMO_Pro out now https://t.co/FBJfnRu5qQ

[Mitch Wainer @MitchWainer]

We should modernize go to market like we modernize product. Slack moved away from gated forms and lead scoring toward product led sales. Get people using the product first, then reach out based on real usage signals and PQLs.

Episode 2 with Bill Macaitis @SaaS_CMO_Pro out now https://t.co/lW7xfczAMG

[Mitch Wainer @MitchWainer]

B2B doesn’t need to be stiff. Humor, video, and real emotion build trust. When people feel good about your brand, they stick around and they tell others.

Episode 2 with Bill Macaitis @SaaS_CMO_Pro out now https://t.co/FBJfnRu5qQ