CJ Hess says he was the first hire at Tenex, possibly before the company name was settled.
“I was actually the first hire. Um, I don't even know if Alex and Armand had the name Tenex quite yet”
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CJ Hess
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CJ Hess says Tenex engineers' output roughly doubled this year, a period he dates from the release of Opus 4.5 in December.
“it's been, like, a two x increase this year, in particular. Um, I think, basically, if you think of December as the, like, Opus four five moment”
CJ Hess says Tenex's MetaHarness is a structured set of documentation inside a code repository plus a command-line tool that models use to drive the work.
“a very structured set of documentation within a repo, and then a CLI that's around it”
CJ Hess says Tenex requires its AI agents to log their decisions and activity in a standard way that is checked into the repository.
“we have a very opinionated way on how agents will go and log their decisions and log what they're doing and just keep track of what they're up to”
CJ Hess says Tenex reviews its story point criteria at least once a quarter to account for improving models.
“I would say, at least once a quarter, we kinda sit down and evaluate, like, what is our criteria for these story points?”
CJ Hess says Tenex's team still uses Codex for computer-use tasks, alongside Opus 5.5 as the main driver.
“I think a lot of the team still reaches for tools like Codex when we need to do something maybe more in the computer use world.”
CJ Hess says Amp recently added the ability to use a Claude Code subscription, which he found a big improvement.
“they recently launched, like, the ability to hook in your cloud code subscription, so that's been a pretty big game changer for me.”