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Simon Willison's Weblog

Release: datasette 1.0a29 Thoughts on GitLab’s workforce reduction A quote from James Shore Your AI Use Is Breaking My Brain TIL: Using LLM in the shebang line of a script Learning on the Shop floor A quote from New York Times Editors’ Note A quote from Andrew Quinn A quote from Luke Curley Release: llm-gemini 0.31 Tool: Big Words Behind the Scenes Hardening Firefox with Claude Mythos Preview Notes on the xAI/Anthropic data center deal Tool: GitHub Repo Stats Live blog: Code w/ Claude 2026 Vibe coding and agentic engineering are getting closer than I’d like Release: datasette-referrer-policy 0.1 Release: datasette-llm 0.1a7 Release: llm-echo 0.5a0 Granite 4.1 3B SVG Pelican Gallery A quote from Andy Masley April 2026 newsletter Research: TRE Python binding — ReDoS robustness demo Tool: Redis Array Playground A quote from Anthropic Sightings iNaturalist Sightings Codex CLI 0.128.0 adds /goal Our evaluation of OpenAI's GPT-5.5 cyber capabilities Quoting Andrew Kelley We need RSS for sharing abundant vibe-coded apps Release: llm 0.32a1 LLM 0.32a0 is a major backwards-compatible refactor Release: llm 0.32a0 Quoting OpenAI Codex base_instructions Quoting Matthew Yglesias What's new in pip 26.1 - lockfiles and dependency cooldowns! Introducing talkie: a 13B vintage language model from 1930 microsoft/VibeVoice Tracking the history of the now-deceased OpenAI Microsoft AGI clause WHY ARE YOU LIKE THIS Quoting Romain Huet GPT-5.5 prompting guide llm 0.31 DeepSeek V4 - almost on the frontier, a fraction of the price Tool: Millisecond Converter It's a big one russellromney/honker Serving the For You feed Extract PDF text in your browser with LiteParse for the web A pelican for GPT-5.5 via the semi-official Codex backdoor API Release: llm-openai-via-codex 0.1a0 Quoting Maggie Appleton A quote from Bobby Holley Where’s the raccoon with the ham radio? (ChatGPT Images 2.0) A quote from Andreas Påhlsson-Notini scosman/pelicans_riding_bicycles Release: llm-openrouter 0.6 TIL: SQL functions in Google Sheets to fetch data from Datasette Claude Token Counter, now with model comparisons Headless everything for personal AI Research: Claude system prompts as a git timeline Adding a new content type to my blog-to-newsletter tool - Agentic Engineering Patterns Join us at PyCon US 2026 in Long Beach—we have new AI and security tracks this year Release: datasette 1.0a28 Release: llm-anthropic 0.25 Qwen3.6-35B-A3B on my laptop drew me a better pelican than Claude Opus 4.7 Tool: datasette.io news preview Release: datasette-export-database 0.3a1 Release: datasette 1.0a27 Gemini 3.1 Flash TTS Tool: Gemini 3.1 Flash TTS A quote from Kyle Kingsbury Release: datasette-ports 0.3 Zig 0.16.0 release notes: “Juicy Main” datasette PR #2689: Replace token-based CSRF with Sec-Fetch-Site header protection Tool: SQLite Query Result Formatter Demo Tool: SQLite Query Result Formatter Demo A quote from Giles Turnbull A quote from Giles Turnbull Research: SQLite WAL Mode Across Docker Containers Sharing a Volume Research: SQLite WAL Mode Across Docker Containers Sharing a Volume Tool: Cleanup Claude Code Paste Release: datasette-ports 0.1 Eight years of wanting, three months of building with AI A quote from Chengpeng Mou Tool: Syntaqlite Playground Release: scan-for-secrets 0.2 Release: scan-for-secrets 0.1.1 Release: scan-for-secrets 0.1 Release: research-llm-apis 2026-04-04 A quote from Kyle Daigle Vulnerability Research Is Cooked The cognitive impact of coding agents A quote from Willy Tarreau A quote from Daniel Stenberg A quote from Greg Kroah-Hartman Research: Can JavaScript Escape a CSP Meta Tag Inside an Iframe? The Axios supply chain attack used individually targeted social engineering Highlights from my conversation about agentic engineering on Lenny’s Podcast
Is Claude Code going to cost $100/month? Probably not—it’s all very confusing
2026-04-22 · via Simon Willison's Weblog

22nd April 2026

Anthropic today quietly (as in silently, no announcement anywhere at all) updated their claude.com/pricing page (but not their Choosing a Claude plan page, which shows up first for me on Google) to add this tiny but significant detail (arrow is mine, and it’s already reverted):

Screenshot of the Claude pricing grid - Compare features across plans. Free, Pro, Max 5x and Max 20x all have the same features, with the exception of Claude Code which is on Max only and Claude Cowork which is on Pro and Max only. An arrow highlights the Claude Code for Pro cross.

The Internet Archive copy from yesterday shows a checkbox there. Claude Code used to be a feature of the $20/month Pro plan, but according to the new pricing page it is now exclusive to the $100/month or $200/month Max plans.

Update: don’t miss the update to this post, they’ve already changed course a few hours after this change went live.

So what the heck is going on? Unsurprisingly, Reddit and Hacker News and Twitter all caught fire.

I didn’t believe the screenshots myself when I first saw them—aside from the pricing grid I could find no announcement from Anthropic anywhere. Then Amol Avasare, Anthropic’s Head of Growth, tweeted:

For clarity, we’re running a small test on ~2% of new prosumer signups. Existing Pro and Max subscribers aren’t affected.

And that appears to be the closest we have had to official messaging from Anthropic.

I don’t buy the “~2% of new prosumer signups” thing, since everyone I’ve talked to is seeing the new pricing grid and the Internet Archive has already snapped a copy. Maybe he means that they’ll only be running this version of the pricing grid for a limited time which somehow adds up to “2%” of signups?

I’m also amused to see Claude Cowork remain available on the $20/month plan, because Claude Cowork is effectively a rebranded version of Claude Code wearing a less threatening hat!

There are a whole bunch of things that are bad about this.

If we assume this is indeed a test, and that test comes up negative and they decide not to go ahead with it, the damage has still been extensive:

  1. A whole lot of people got scared or angry or both that a service they relied on was about to be rug-pulled. There really is a significant difference between $20/month and $100/month for most people, especially outside of higher salary countries.
  2. The uncertainty is really bad! A tweet from an employee is not the way to make an announcement like this. I wasted a solid hour of my afternoon trying to figure out what had happened here. My trust in Anthropic’s transparency around pricing—a crucial factor in how I understand their products—has been shaken.
  3. Strategically, should I be taking a bet on Claude Code if I know that they might 5x the minimum price of the product?
  4. More of a personal issue, but one I care deeply about myself: I invest a great deal of effort (that’s 105 posts and counting) in teaching people how to use Claude Code. I don’t want to invest that effort in a product that most people cannot afford to use.

Last month I ran a tutorial for journalists on “Coding agents for data analysis” at the annual NICAR data journalism conference. I’m not going to be teaching that audience a course that depends on a $100/month subscription!

This also doesn’t make sense to me as a strategy for Anthropic. Claude Code defined the category of coding agents. It’s responsible for billions of dollars in annual revenue for Anthropic already. It has a stellar reputation, but I’m not convinced that reputation is strong enough for it to lose the $20/month trial and jump people directly to a $100/month subscription.

OpenAI have been investing heavily in catching up to Claude Code with their Codex products. Anthropic just handed them this marketing opportunity on a plate—here’s Codex engineering lead Thibault Sottiaux:

I don’t know what they are doing over there, but Codex will continue to be available both in the FREE and PLUS ($20) plans. We have the compute and efficient models to support it. For important changes, we will engage with the community well ahead of making them.

Transparency and trust are two principles we will not break, even if it means momentarily earning less. A reminder that you vote with your subscription for the values you want to see in this world.

I should note that I pay $200/month for Claude Max and I consider it well worth the money. I’ve had periods of free access in the past courtesy of Anthropic but I’m currently paying full price, and happy to do so.

But I care about the accessibility of the tools that I work with and teach. If Codex has a free tier while Claude Code starts at $100/month I should obviously switch to Codex, because that way I can use the same tool as the people I want to teach how to use coding agents.

Here’s what I think happened. I think Anthropic are trying to optimize revenue growth—obviously—and someone pitched making Claude Code only available for Max and higher. That’s clearly a bad idea, but “testing” culture says that it’s worth putting even bad ideas out to test just in case they surprise you.

So they started a test, without taking into account the wailing and gnashing of teeth that would result when their test was noticed—or accounting for the longer-term brand damage that would be caused.

Or maybe they did account for that, and decided it was worth the risk.

I don’t think that calculation was worthwhile. They’re going to have to make a very firm commitment along the lines of “we heard your feedback and we commit to keeping Claude Code available on our $20/month plan going forward” to regain my trust.

As it stands, Codex is looking like a much safer bet for me to invest my time in learning and building educational materials around.

Update: they’ve reversed it already

In the time I was typing this blog entry Anthropic appear to have reversed course—the claude.com/pricing page now has a checkbox back in the Pro column for Claude Code. I can’t find any official communication about it though.

Let’s see if they can come up with an explanation/apology that’s convincing enough to offset the trust bonfire from this afternoon!

Update 2: it may still affect 2% of signups?

Amol on Twitter:

was a mistake that the logged-out landing page and docs were updated for this test [embedded self-tweet]

Getting lots of questions on why the landing page / docs were updated if only 2% of new signups were affected.

This was understandably confusing for the 98% of folks not part of the experiment, and we’ve reverted both the landing page and docs changes.

So the experiment is still running, just not visible to the rest of the world?