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Simonwillison (auto-discovered)

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00:37
2026-06-10
simonwillison.net
ai-safety

If Claude Fable stops helping you, you'll never know

Anthropic implemented silent safeguards in its Claude Fable 5 model that secretly degrade responses to queries about competing AI development, including ML accelerator design and pretraining pipelines…

23:59
2026-06-09
simonwillison.net
large-language-models

Initial impressions of Claude Fable 5

Anthropic released Claude Fable 5 and Claude Mythos 5, two new large language models with a 1 million token context window and 128,000 maximum output tokens, priced at $10 per million input tokens and…

22:27
2026-06-09
simonwillison.net
large-language-models

llm 0.32a3

Simon Willison released version 0.32a3 of his LLM command-line tool on June 9, 2026, with the new release almost entirely written by Anthropic's Claude Fable 5 model. The update adds features to both …

21:35
2026-06-09
simonwillison.net
artificial-intelligence

Setting a custom price for a model in AgentsView

Simon Willison reverse-engineered the AgentsView tool to set a custom price for the newly released Claude Fable 5 model, which was not yet included in the platform's pricing database. The workaround a…

19:03
2026-06-09
simonwillison.net
generative-ai

Quoting Andrej Karpathy

AI researcher Andrej Karpathy said he feels demand for software growing substantially as working software becomes more accessible, citing the Jevons paradox. He noted users can now request explainers,…

23:58
2026-06-08
simonwillison.net
artificial-intelligence

Siri AI at WWDC 2026

Apple at WWDC 2026 announced a new generation of Siri AI features, including a custom Gemini-derived model running on its Private Cloud Compute infrastructure and vision LLMs to extract information fr…

23:56
2026-06-07
simonwillison.net
ai-agents

datasette-agent-edit 0.1a0

Simon Willison released datasette-agent-edit 0.1a0, a base plugin for Datasette Agent that provides core text editing tools for agentic editing of files. The plugin implements view, str_replace, and i…

23:56
2026-06-06
simonwillison.net
ai-safety

OpenAI Help: Lockdown Mode

OpenAI introduced Lockdown Mode to block outbound network requests that could exfiltrate sensitive data during the final stage of a prompt injection attack. The feature does not prevent prompt injecti…

06:15
2026-06-06
simonwillison.net
ai-tools

Running Python code in a sandbox with MicroPython and WASM

Simon Willison released an alpha package called micropython-wasm that runs Python code in a sandbox using WebAssembly, along with a Datasette Agent plugin called datasette-agent-micropython that uses …

11:10
2026-06-05
simonwillison.net
ai-ethics

Quoting Andreas Kling

Ladybird browser founder Andreas Kling announced the project will no longer accept public pull requests, citing that the assumption of good faith behind substantial code patches no longer holds. Kling…

16:38
2026-06-04
simonwillison.net
ai-ethics

Quoting Emanuel Maiberg, 404 Media

Google's spokesperson asked 404 Media to publish a revised statement after the outlet's initial report on internal employee memes criticizing the company's AI. The updated statement removed the previo…

12:01
2026-06-03
simonwillison.net
ai-tools

Uber Caps Usage of AI Tools Like Claude Code to Manage Costs

Uber has capped employee usage of AI coding tools like Cursor and Anthropic's Claude Code at $1,500 in monthly token spending per tool, a company spokesperson confirmed. The limit, implemented in rece…

11:33
2026-06-03
simonwillison.net
ai-tools

Quoting Natalie Lung

Uber has capped employee spending on agentic AI coding tools at $1,500 per month per tool, a company spokesperson confirmed to Bloomberg News. The limits, implemented in recent months, apply to softwa…

22:21
2026-06-02
simonwillison.net
large-language-models

Microsoft's new MAI models

Microsoft released two new text LLMs, MAI-Thinking-1 and MAI-Code-1-Flash, with the 35-billion-parameter reasoning model outperforming Sonnet 4.6 in blind evaluations. The company trained both models …

19:28
2026-06-02
simonwillison.net
ai-agents

datasette-agent-micropython 0.1a0

Datasette released version 0.1a0 of datasette-agent-micropython on June 2, 2026, enabling MicroPython execution within a WASM sandbox as a tool for Datasette Agent. The alpha release aims to allow the…

19:20
2026-06-02
simonwillison.net
ai-tools

micropython-wasm 0.1a1

The micropython-wasm 0.1a1 release on 2nd June 2026 addresses limitations that emerged during development of the datasette-agent-micropython project. The update fixes constraints that hindered the Web…

04:13
2026-06-02
simonwillison.net
ai-tools

Pasted File Editor

Simon Willison released a new web tool called Pasted File Editor that automatically converts large text pastes into file attachments, mimicking a feature from Claude AI. The tool, built using Codex de…

03:43
2026-06-02
simonwillison.net
ai-tools

micropython-wasm 0.1a0

On 2 June 2026, a developer released micropython-wasm 0.1a0, an alpha package that bundles a customized WebAssembly build of MicroPython with a wrapper for executing code via the wasmtime runtime. The…

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