
Founder & CEO @GetHeyStream and @HeySummit. Formerly @missinglettr (acquired). Wine, coffee and tea experimenter.
Berkshire, United Kingdom
Joined November 2008
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This is a fantastic summary of what Jev does and how it compares to and can sit alongside LLMs.
It’s actually got me thinking about a range of ways I could use it.
this is the easiest way to understand Jev:
LLMs generate answers.
Jev makes decisions.
that sounds like a small difference, but it actually changes the entire use case.
say you give a normal LLM this:
“here’s a user, their account history, payment behavior, support chats, device data, etc.
tell me if this looks risky.”
the LLM might reason through it and return:
“yes, this looks high risk.”
maybe in JSON if you ask nicely.
with Jev, you define the possible decisions upfront:
risk:
* low
* medium
* high
manual review:
* yes
* no
and Jev returns something closer to:
risk = high (96%)
manual review = yes (91%)
that’s basically the product.
it’s not trying to be another ChatGPT.
it’s more like an AI-native if statement.
instead of:
if transaction > $10,000:
review()
you can start thinking more like:
if “does this behavior look suspicious?” > 95%:
review()
and that opens up a pretty interesting category of software.
a few assumptions I had at first that turned out to be wrong:
1. “so it’s just a classifier?”
kind of, but that undersells it.
the input can be messy real-world context, and you can ask multiple typed questions about that state at once.
fraud?
churn?
escalate?
eligible?
priority?
all from the same input.
2. “so it replaces GPT / Claude?”
not really.
I actually think the interesting architecture is:
Jev decides WHAT needs to happen
Claude / GPT reason or generate WHEN deeper intelligence is needed
normal code executes the deterministic stuff.
Jev becomes the routing layer.
3. “it can’t hallucinate?”
this one needs nuance.
if your allowed answers are:
LOW
MEDIUM
HIGH
Jev won’t suddenly invent:
“EXTREMELY HIGH 🚨”
the output structure is constrained.
but it can still be wrong.
HIGH at 92% can still be the wrong decision.
so “no hallucinations” doesn’t mean “always correct.”
4. “why not just force an LLM to return JSON?”
you can.
we already do this everywhere.
but you still deal with generation latency, schema validation, retries, weird outputs, confidence estimation and a lot of glue code.
Jev is designed around the decision itself rather than text generation.
5. “why should I care?”
because most software is ultimately a giant tree of:
if this → do that
if this → route here
if this → escalate
if this → reject
if this → ask a human
Jev is basically asking:
what if those if statements could understand messy human context?
that’s a much more interesting framing than “another AI model.”
I can see this being very useful for:
fraud / risk
support routing
moderation
PR / QA automation
lead scoring
compliance
workflow orchestration
agent routing
especially as the cheap + fast decision layer sitting in front of larger reasoning models.
early tech, obviously.
but the category itself makes a lot of sense.
OpenAI has been down for me practically all day (every few minutes it reports that it is at capacity).
Super frustrating but on the plus side, i think there's a genuine chance i might actually be able to make my weekly 20x plan last a full week at this rate!
It just occured to me that there are probably millions of ChatGPT/Codex users that either don't use X or aren't following Tibo, etc., and will have no visibility over the numerous usage resets that have been rolling out.
They must presumably get quite baffled when their usage suddenly resets without any prior knowledge or warning. A pleasant surprise no doubt, but must feel somewhat confusing.
I've been working on some improvements to @HeySummit onboarding. Time for a refresh!
Before and after...
Bloody hell, my ChatGPT codex usage reset 2hrs ago and after 3 threads, its now down 20% (weekly usage limits). Craaazzy.
Turning my attention to @HeySummit today. It's such an incredibly powerful product, but over the years that power has resulted in confused navigation and a dashboard layout that doesn't guide people properly.
So today i'm starting to work on a completely refreshed UI with a new sidebar control. Still more to do, but i'm liking the direction.
New one is on the left, FYI :)
#buildinpublic
Swapped out the usual signup button in the nav header with a new "Sign up with Google" button (and also added the button in the hero header) as i'd heard it can help with conversion rates.
It's only been live 24hrs but already seeing an improvement.
Worth trying out if you don't offer it on your site!
Tasking myself today to see if i can improve the streaming latency for @GetHeyStream.
Currently sits at around 10 seconds - feel like i should be able to reduce that by a good few seconds. Famous last words!
Replying to @bendell @GetHeyStream
Interesting - baseline stats as follows:
Mean latency: 15.4s
Median run: 10.6s
Run-level p95: 31.3s
Range: 5.15–31.3s
So there's some weird variability we need to resolve - and of course, the overall number needs to come down.
Most webinars default to slides before anyone asks what the audience should do.
I put together a guide to 9 B2B formats, with the trade-offs that matter: participation, speakers, operator load, CTA, replay, and follow-up.
heystream.com/blog/webinar-f…
Most multistreaming advice starts with destination count.
For B2B webinars, the harder question is what happens to registration, viewer identity, CTAs and follow-up when the audience splits.
We published a practical guide:
heystream.com/blog/webinar-m…
Comparison pages are more useful when they admit when you shouldn't switch.
Our new HeyStream guide starts with the case for staying with Crowdcast, then compares 7 alternatives by the job each webinar program needs to do.
heystream.com/blog/crowdcast…
I keep seeing webinar teams use one giant doc as the agenda, run sheet, and moderator script. It gets harder for everyone to use.
I put the clearer split, plus a copyable agenda worksheet, into this new HeyStream guide:
heystream.com/blog/webinar-a…
Most panel moderators don't need a longer list. They need a better way to choose who to ask, what to listen for, and where to take the answer next.
A 36-question B2B webinar panel bank:
heystream.com/blog/panel-dis…
Most “alternatives” lists decide on a winner too early.
Choose the operating model first: live, automated, paid training, or enterprise events. Then compare products.
That is the method behind our new ClickMeeting guide:
heystream.com/blog/clickmeet…
A 32% webinar attendance rate can be more valuable than 55% if the audience is a better fit.
Use ~40% as a directional benchmark. Then check source, replay, watch time, CTA activity and follow-up.
heystream.com/blog/average-w…
If a webinar poll answer will not change anything, do not interrupt the audience to ask it.
I put together 30 questions for six live moments, with timing, sample options, host follow-through, and an intent guardrail.
heystream.com/blog/webinar-p…







