@chrisjenx

Staff Engineer @Mercury. My opinions are my own.

Colorado, USA
Joined April 2009
It still seems AI biggest problem is that people don't know when to use what model at what effort. Sonnet/Luna/Sol/Haiku are not drop in replacements for higher models. At this point they are subagent models. Use Opus/Fable/Sol/Astra to orchestrate them.
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What's interesting. Astra is horribly token inefficient vs Fable. But holy moly Sol is so much more token efficient than Opus it's equivalent to about 2 or 3 Claude Subs. However - Codex is way slower, so maybe by design it's harder to run out?
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Christopher Jenkins retweeted
Today, we’re releasing Kalypta, the first app to block AI notetakers in your meetings. Granola? Wisprflow? Cluely? No more. With Kalypta, you become inaudible to AI. Your call continues normally.
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Christopher Jenkins retweeted
1/ Today, we're launching @Mercury Books. AI-powered accounting software, for your bookkeeper or you, that categorizes and reconciles your transactions the moment they happen.
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So here's the problem. Fable better than Astra Sol,Terra,Luna way better than Opus, Sonnet and Haiku. Which isn't a bad thing but the 50% cap on Fable makes it impossible to efficiently use both plans side by side....
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.@OpenAIDevs This is Astra everyday. Just stops...
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So Astra is good. But it's lazy and gives up to easily. It also really struggles against auto mode and won't listen to auto mode suggestions. @OpenAIDevs
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What people also don't realize is that there is no fee for this - many other providers will charge you upwards of 1% to do Instant payments. Let's hope others follow.
1/ Today, we’re launching real-time payments (RTP): instant, always-on money movement, 24/7, weekends and holidays too. Pay someone at 9pm on a Friday, it lands by 9:01. Many banks don’t even know US RTP are possible (lots of banks don’t offer it). Its now live on Mercury.
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WARNING ⚠️ Companies like usemassive.com are lying about jobs to steal code during interviews to sell as training data. Always apply directly to the company in question never through a third party.
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Another outage last night @AnthropicAI. Usage limits are even more pathetic due to bugs in CC. System prompt is confusing agents (which I think is the main issue for O5 and F5 issues) 🦗
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Think I nailed the mixed results with Opus 5. It is insanely sensitive to the prompt/context. It went unhinged, rolled back, changed one word and was amazing going forwards. The new tokenizer is not forgiving. Your prompts and rules can't be vague.
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This is why they're prompt guidance is to pull back and don't over guide as it will confuse it. It's definitely the most engineering focused model and I can see why people are hating on it.
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Two days without a Claude Code release. I'm guessing something merged they don't want leaking.
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No Claude Code release last night. Always sus when they miss a release. What we got going on today?
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Christopher Jenkins retweeted
Enjoy Flock's response to vulnerabilities verified by MITRE, DHS, independent media organizations, and dozens of researchers. Do you feel safe now? – at College Station, TX
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Christopher Jenkins retweeted
Hi @bcherny and whoever else at Anthropic that sees this: My agents are having a heck of a time in Claude Code with skills that want to dispatch subagents. They report that the system prompt now has this directive which is superseding nearly all efforts to get subagents to work: “Do not call the AgentTool unless the user requested it” Skills that have instructions to “spawn subagents” aren’t even qualifying.
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Claude's models seem to have regular split brain issues or they have some aggressive A/B testing. One session will be amazing. The next one is insufferable - lying, not checking, loads of mistakes. A consistently mediocre model is better than sometimes smart one.
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Christopher Jenkins retweeted
This video apparently violated some ridiculous rules on twitter and keeps being removed Real journalism is being punished
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Christopher Jenkins retweeted
"The only minority destroying America is billionaires. Trans people are 1% of the population. Muslims are 1% of the population. Undocumented people are 1% of the population. We are focused on the wrong 1%.” James Talarico Democratic nominee for U.S. Senate in Texas.
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