@sandhya

Co-founder @Calibre_Labs | Applied AI research & consulting | Agents, AI Evals | prev EVP @amplitude_HQ | VC @khoslaventures @sequoia | @stanford @iitbombay

blog.calibrelabs.ai
Joined May 2009
  • Tweets6.7K
  • Following381
  • Followers9.5K
519Media
Introducing OpenSource Clay killer - 85% cheaper than clay - Most accurate on people-search bench - 25x faster - Run GTM directly in claude code or codex Try it at treg.to/people-search Repo link below 👇
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reading feynman lecturess as feynman intended: with accompanying ai-made demo sections for each chapter rapid acquisition of knowledge is possible thanks to superintelligence
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Sandhya
@sandhyaSep 21
Presenting.. the most underinvested artifact by PMs building agents.

Eval rubrics that drive your AI strategy

Article · @sandhya
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Can we agree to call Jev a "Decision Model"? I feel like they buried this in the explainations and docs. Language models output language. Decision models output decisions.
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Sandhya
@sandhyaAug 20
Replying to @OfficialLoganK
Not nearly enough since 90% of token volume is agents/model loops reloading cached context and prompts? Probably because they don’t have good evals to optimize that 😛
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The Devil Horns Solar Eclipse Is one of the rarest sunrise ever photographed and was stunning.
Readers added context they thought people might want to know
The sunrise shot was snapped by photographer Elias Chasiotis while on vacation in Qatar during the eclipse in December, 2019. This post presents an AI generated video based on the photograph. fox10phoenix.com/news/devil-hor…
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It’s happening ✨
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Xiangyi Li
@xdotliJun 24
sharing my personal library on evals 1/n i put together the highest quality blogs, podcasts, papers, and projects on evals. additions are welcome!
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tobi lutke
@tobiMay 9

Learning on the Shop floor

Article · @tobi
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Simon Willison
@simonwApr 20
I upgraded my Claude token counter tool to compare different models and Opus 4.7 does appear to use 1.46x times the tokens for text and up to 3x the tokens for images - it's priced the same as Opus 4.6 on a per-token basis so this is actually a pretty big price bump
Screenshot of a token comparison tool with an uploaded screenshot PNG image. Models to compare: claude-opus-4-7 (checked), claude-opus-4-6 (checked), claude-opus-4-5, claude-sonnet-4-6, claude-haiku-4-5. Note: "These models share the same tokenizer". Blue "Count Tokens" button. Results table — Model | Tokens | vs. lowest. claude-opus-4-7: 4,744 tokens, 3.01x (yellow badge). claude-opus-4-6: 1,578 tokens, 1.00x (green badge).

ALT Screenshot of a token comparison tool with an uploaded screenshot PNG image. Models to compare: claude-opus-4-7 (checked), claude-opus-4-6 (checked), claude-opus-4-5, claude-sonnet-4-6, claude-haiku-4-5. Note: "These models share the same tokenizer". Blue "Count Tokens" button. Results table — Model | Tokens | vs. lowest. claude-opus-4-7: 4,744 tokens, 3.01x (yellow badge). claude-opus-4-6: 1,578 tokens, 1.00x (green badge).

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Anthropic, I get the release a day thing. But can you take a breather and make cowork talk to code and talk to chat and talk to dispatch and talk to remote. I am so confused with how this all fits together. Love, your favorite shitty CFO
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Simon Willison
@simonwFeb 23
I've published the first two chapters of a new guide to Agentic Engineering Patterns - coding practices and patterns to help get the best results out of coding agents like Claude Code and OpenAI Codex simonwillison.net/2026/Feb/2…

Writing about Agentic Engineering Patterns

I’ve started a new project to collect and document Agentic Engineering Patterns—coding practices and patterns to help get the best results out of this new era of coding agent development …

simonwillison.net
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Quinn Slack
@sqsFeb 13
If you haven't changed at least 50% of your direction/roadmap/plans in the last 4 weeks, you are making a very risky choice.
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It Was Never About AI (We Are Not Our Tools)

Article · @EricMarkowitz
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Phil Chen
@philhchenFeb 6

Cowork will not be your virtual coworker

Article · @philhchen
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Jeff Dean
@JeffDeanJan 24
This is absolutely shameful. Agents of a federal agency unnecessarily escalating, and then executing a defenseless citizen whose offense appears to be using his cell phone camera. Every person regardless of political affiliation should be denouncing this.
Ryan Grim
@ryangrimJan 24
Drop Site obtained harrowing footage of the latest killing which appears to be from the perspective of the woman in pink filming from the sidewalk
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Simon Willison
@simonwJan 19
Adding Deno and Node.js creator Ryan Dahl to the growing chorus Software developers add WAY more value than memorizing the syntax trivia of the languages they use It's time to lean into that everything-else and cede putting semicolons in the right places to the robots
Ryan Dahl
@rough__seaJan 19
This has been said a thousand times before, but allow me to add my own voice: the era of humans writing code is over. Disturbing for those of us who identify as SWEs, but no less true. That's not to say SWEs don't have work to do, but writing syntax directly is not it.
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Aadik
@crapshoot101Jan 7
Replying to @sandhya
@sandhya is one of the single smartest and thoughtful people I've met in the valley, and it makes sense that she'd pursue an orthogonal path - go work with her
Sandhya
@sandhyaJan 7

Launching Calibre

Article · @sandhya
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The hardest part of building AI products is organizational change. How do you teach everyone how to do context engineering, setup AI evals, and build nondeterministic products? Every company I talk to wants training for the organizational changes needed. Sandhya and Justin, two of the best product leaders from Amplitude, are launching Calibre to teach companies how to build AI products. They're already working with top companies, including Amplitude.
Sandhya
@sandhyaJan 7

Launching Calibre

Article · @sandhya
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Some personal news: I’m launching Calibre Labs, an applied AI research and consulting firm I’ve started in partnership with @sandhya This is the culmination of the advising work I’ve been doing the past two years post-Amplitude. See more below!
Sandhya
@sandhyaJan 7

Launching Calibre

Article · @sandhya
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