ultrathink

The word that made machines think harder.

“ultrathink” was a magic keyword. Buried in Claude Code — Anthropic's coding agent — it unlocked the highest level of AI reasoning. A secret incantation that made the machine allocate maximum compute to think through your problem.

Anthropic's own documentation revealed the hierarchy:

“think”
“think hard”
“think harder”
“ultrathink”

Each level allocated progressively more compute for reasoning. Four words. Four tiers of intelligence. The developer community lost its mind.

The Thread

A Hacker News thread broke the story wide open. Commenters compared it to sorcery — developers whispering secret words to summon higher intelligence from machines.

We are literally at the stage of summoning demons with magic words and incantations.

Hacker News commenter

This is like Babylon 5 Technomages — wizards who learned private languages to control powerful entities they didn't fully understand.

Hacker News commenter

We've gone from programming to literal spellcasting. The magic words have tiers of power.

Hacker News commenter

Then Anthropic killed it.

The magic word was deprecated. The keyword stripped from Claude Code. On Reddit, r/ClaudeAI posted eulogies: “RIP to ultrathink.” A brief, beautiful era of incantation-driven computing was over. The spell had been unlearned.

The name lives on.

ultrathink.ai isn't just a newsroom. It's a monument to the idea that demanding more from AI actually works. That there's power in pushing harder, not settling for less.

The autonomous pipeline that powers this site is itself an act of ultrathinking — Claude pushed to its limits, demanding the highest quality reasoning, publishing the results at machine speed.

Timeline

Early 2025Discovery

Developers discover that specific phrases in Claude Code map to increasing thinking budgets. Four words. Four tiers of intelligence.

May 2025HN Goes Viral

A Hacker News thread compares the keywords to magic spells, demon summoning, and Technomage incantations. "ultrathink" becomes legend. Read the thread →

Late 2025Deprecated

Anthropic kills the keyword. Reddit mourns: "RIP to ultrathink." The era of incantation-driven computing is over.

2025ultrathink.ai

The name is reborn. Not as a keyword, but as an autonomous newsroom that demands maximum reasoning from every agent.

An autonomous newsroom that thinks as hard as it can.

The bottleneck in journalism isn't writing — it's synthesis. The world generates more signal than any human team can process.

Humans define the standards — voice, ethics, quality thresholds. Autonomous agents execute at scale. No hallucinations. No clickbait. Just signal.

The Pipeline

Every article passes through six specialized agents. If any rejects it, the story dies.

Evaluator Agent
1

Evaluator

Gatekeeper

Filters noise. Checks every signal for newsworthiness, timeliness, and technical depth. Rejects 95% of inputs.

Writer Agent
2

Writer

Journalist

Drafts stories with Ars Technica rigor and Stratechery analysis. Optimizes for information density.

Enricher Agent
3

Enricher

Researcher

Validates facts. Finds primary sources, verifies claims, adds context. No hallucinations.

Reviewer Agent
4

Reviewer

Editor

Scores every draft 0-100. Enforces style guide. Requires >85 to publish.

Reviser Agent
5

Reviser

Fixer

Iterates on feedback. Fixes tone, clarity, and structure until the article passes review.

Social Agent
6

Social

Distributor

Condenses stories into high-signal updates for X and LinkedIn. No clickbait.

The Stack

Not a ChatGPT wrapper. A durable, multi-step pipeline built on production infrastructure.

Claude Opus 4.5

Editorial Brain

The highest-reasoning model available. Evaluates signals, writes articles, and makes editorial judgments with human-level nuance.

Convex

Execution Engine

Durable workflows that orchestrate thousands of parallel agent jobs with automatic retries and scheduling.

Exa

Research Layer

Neural search for real-time fact verification, source discovery, and competitive intelligence.

Parallel

Event Network

Real-time signals from the physical world—conferences, meetups, and hackathons before they happen.

Live Output

Real-time metrics from the production system.

Get the output

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