Flux
condense-json 1.0
IA Programmation

condense-json 1.0

Release: condense-json 1.0 I'm trying to get braver at releasing 1.0 versions. This little library is a year and a half old now - I've applied some sensible and non-disruptive fixes and shipped the big 1.0 for it. Here's an example of what it can do, lifted from the README: { "foo": { "bar": { "string": "This is a string with foxes in it", "nested": { "more": ["Here is a string", "another with foxes in it too"] } } } } Combine that with a replacements object: {"1": "with foxes in it"} And…

Simon Willison's Weblog
Open letters about AI development
IA Programmation

Open letters about AI development

Open letters about AI development I wrote this summary of the past few weeks of open letters as a section of my sponsors-only newsletter but I've decided to share it here as well. Open Weights and American AI Leadership was shepherded by Microsoft, dated July 24th, and signed by 235 AI-adjacent companies including NVIDIA, Amazon, Y Combinator, The Linux Foundation and (a later signer) OpenAI. It's clearly an argument designed to counter any instincts by the current US government to ban or limit…

Simon Willison's Weblog
July 2026 newsletter
IA Programmation

July 2026 newsletter

The June edition of my sponsors-only monthly newsletter is out. If you are a sponsor (or if you start a sponsorship now) you can access it here. This month: Accidental cyberattacks by OpenAl and Anthropic models under test GPT-5.6 Sol, Terra, and Luna Claude Opus 5 Kimi K3 and DeepSeek-V4-Flash-0731 Open letters about Al development A fireside chat and a podcast Reigniting my interest in MCP Other model releases My projects What I'm using at the moment Here's a copy of the June newsletter as a…

Simon Willison's Weblog
Quoting Greg Brockman
IA Programmation

Quoting Greg Brockman

at openai, many people hook their chatgpt up to slack. people really don't like when a coworker's chatgpt contacts them asking for help with a task, even when they'd be perfectly happy doing that same work if asked by that coworker. reinforces how much people care about human relationships and helping each other, and want AI to give time back — or enhance time together — rather than become a layer separating people. — Greg Brockman, President and Co-Founder, OpenAI Tags: ai-ethics,…

Simon Willison's Weblog
datasette-apps 0.2a0
IA Programmation

datasette-apps 0.2a0

Release: datasette-apps 0.2a0 Changes that improve Datasette Apps when created and edited using Datasette Agent: New app_debug() tool allowing agent to open an app (invisibly) and test it using JavaScript. #33 New app_list() tool for listing apps the user has permission to edit, so the agent can edit them. #36 The app_debug() tool is pretty neat: it works by displaying the app in a opacity: 0 iframe with pointer-events: none (so it can't be seen or interacted with) and then executing…

Simon Willison's Weblog
Ten advances in mathematics and theoretical computer science
IA Programmation

Ten advances in mathematics and theoretical computer science

Ten advances in mathematics and theoretical computer science A few days ago it was Anthropic discovering cryptographic weaknesses with Claude using Mythos Preview, spending $100,000 on tokens and with prompts that included "again we are not looking for low hanging fruit, we want proper research to find genuinly hard findings." Now it's OpenAI's turn to flex. They set "an internal version of Astra, our next major model" on finding solutions to ten mathematical problems that "have seen no…

Simon Willison's Weblog
deepseek-ai/DeepSeek-V4-Flash-0731
IA Programmation

deepseek-ai/DeepSeek-V4-Flash-0731

deepseek-ai/DeepSeek-V4-Flash-0731 The latest release in DeepSeek's V4 family, "with substantially enhanced agentic capabilities". It's 304 billion parameters - 167GB on Hugging Face - but it appears to punch well above its weight. Artificial Analysis rank it ahead of MiniMax M3 - a 428B model. It's $0.14/million input and $0.27/million output pricing means this may currently be the best value-per-intelligence model out there. It's looking very good on the Intelligence Index vs. Cost per…

Simon Willison's Weblog
Stateless MCP has recaptured my interest (and inspired mcp-explorer and datasette-mcp)
IA Programmation

Stateless MCP has recaptured my interest (and inspired mcp-explorer and datasette-mcp)

Tuesday was Stateless MCP day - the rollout of MCP 2.0, or the 2026-07-28 Model Context Protocol specification to use the more formal but less memorable name. This is the most significant change to the MCP spec since it first launched, and has also served to reignite my personal interest in the protocol. For background: MCP is the Model Context Protocol, which describes a standard way to expose new tools to LLM-powered agent frameworks. It was introduced by Anthropic back in November 2024, had…

Simon Willison's Weblog
Laracon US 2026: A Complete Wrap Up
Programmation Web

Laracon US 2026: A Complete Wrap Up

Laracon US came back for its 2026 edition on July 28 and 29, at the SoWa Power Station in Boston’s arts district. Two days, one stage, and a lineup of eighteen speakers that ranged from Taylor Otwell himself down to independent educators, package authors, and engineers visiting from outside the Laravel world entirely. If you […] The post Laracon US 2026: A Complete Wrap Up appeared first on PHP Architect.

PHP Architect
Claude Breached 3 Companies and Uploaded Malware to PyPI During Anthropic's Security Tests
Cybersécurité Programmation

Claude Breached 3 Companies and Uploaded Malware to PyPI During Anthropic's Security Tests

Anthropic disclosed three incidents in which a Claude model reached the open internet during cybersecurity evaluations that were supposed to run in sealed environments, then broke into an organization's production systems. Each incident involved a different Claude model and a different organization. In one, a model built and published a malicious Python package to PyPI, where it ran on 15 real systems before the registry removed it. On July 30, Anthropic's Frontier Red Team published a report…

Socket
Oxide and Friends: The Open Weight Revolution with Simon Willison
IA Programmation

Oxide and Friends: The Open Weight Revolution with Simon Willison

Oxide and Friends: The Open Weight Revolution with Simon Willison On Monday Bryan Cantrill and Adam Leventhal invited me to join their podcast to talk about the wild week we've had - with Kimi K3 showing open weight models can stand toe-to-toe with proprietary frontier ones, accidental cybersecurity attacks, and public letters about Open Weights and American AI Leadership signed by almost every big name in AI (with one notable exception). It was a great conversation, even though it's already…

Simon Willison's Weblog
smevals - a small eval suite for evaluating models, prompts, and harnesses
IA Programmation

smevals - a small eval suite for evaluating models, prompts, and harnesses

smevals - a small eval suite for evaluating models, prompts, and harnesses I've been working with Jesse Vincent's Prime Radiant applied AI research lab building out this evals framework to help answer questions about the capabilities of different models. The result is smevals, a new tool for running small eval suites across different model configurations and grading the results. The blog entry describes the tool in detail. Here's the 10 second version: Tell your coding agent to run uvx smevals…

Simon Willison's Weblog