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Ask HN: What default model do you use and why?

Ask HN thread polls developers on default AI models; submitter prefers Claude Opus 4.8 as good value, avoiding pricier Fable.

A Hacker News 'Ask HN' thread asking which default AI model people use drew 23 points and 38 comments. The submitter reports using Claude Opus 4.8 for web, mobile, and cloud backend work, calling it good value and mostly accurate. They describe Fable as overkill that burns through Max plan session credits in minutes when planning with four agents, with cache timeouts causing further credit loss.

Hacker News · securitySep 12, 14:58 UTC · 4d agoAI industry HN 23↑ · 39 comments

AI agent swarms are a massive waste of tokens with zero quality gain, says OpenAI Codex developer

OpenAI Codex developer Eric Provencher warns that running more than two parallel AI sub-agents burns tokens without improving output quality.

Eric Provencher, a Codex developer at OpenAI, said on X that parallel agent swarms incur a 'coordination tax' because agents redundantly verify each other's work. He cited a project where 1,393 Fable agents spent $20,000 in tokens refactoring a single Python file, arguing a single Astra agent could have done it for a fraction of the cost. He recommends delegating tasks to threads that notify the main agent on completion rather than constant polling, and acknowledged OpenAI still needs better solutions.

The Decoder11:03 UTC · 2h agoAI industry1

Nvidia CEO Jensen Huang tells Trump ‘we’re not going to let [an AI slowdown] happen’

Nvidia CEO Jensen Huang told Trump 'we're not going to let an AI slowdown happen,' rejecting Amodei's call to slow AI capability gains.

During the All-In Summit, Nvidia CEO Jensen Huang took a live speakerphone call from President Donald Trump and agreed 'we're not going to let' an AI slowdown happen, countering Anthropic CEO Dario Amodei's call to slow AI capability improvements, which Elon Musk and Sam Altman have endorsed. Trump called the slowdown sentiment 'a hoax' that could benefit political actors or China. Gallup polling shows seven in 10 Americans oppose local data center construction, with over 50% citing environmental resource concerns.

TechCrunch · AISep 14, 21:51 UTC · 2d agoAI industry

Slack can now vibe-code interactive charts and reports inside chats

Slack launched Slackforce Surfaces, letting Slackbot build interactive dashboards, reports, and microsites directly inside chat channels.

Slackforce Surfaces uses AI to gather context from conversations and connected apps such as Google Drive and Salesforce to generate shareable interactive reports, polls, dashboards, and presentations. Surfaces can be pinned to channels where colleagues can view, interact, and comment. The feature is available to all customers, including free users, with Slackbot enabled, and live data support starts in October.

The Verge · AISep 10, 21:25 UTC · 6d agoAI industry3

Gradium Launches Voice Design: Write a Prompt, Get a Brand New Synthetic Voice in Seconds

Gradium, a Kyutai spinout, launched Voice Design, generating custom synthetic voices from text descriptions in seconds across five languages.

Gradium, a Paris-based voice AI company spun out of Kyutai, launched Voice Design, which generates new synthetic voices from 1-500 character text descriptions in seconds without needing reference audio or speaker consent. The feature is live in the Gradium API and Studio, free on every plan including the free tier, and kept voices run on the standard streaming TTS endpoint at the same latency as catalog voices. Vendor-run blind pairwise listening tests across 7,627 comparisons report a 72.6% win rate, 13.6 points ahead of ElevenLabs at 59.0%, placing first in all five tested languages, with the largest margins on regional accents such as Quebecois French (97%).

MarkTechPostSep 9, 07:29 UTC · 8d agoAI industry1