Publisher
simonwillison.net
Newest story built on simonwillison.net reporting: At $2 trillion, Anthropic would list at about 30 times its latest quarter annualized (October 14, 2026). simonwillison.net reporting informs the Build, Invest, and Product desks, most often on Model pricing and inference economics, Open-Weight Model Publishing, and AI Agents. 48 of our current stories draw on it, the earliest from August 14, 2026.
Anthropic told investors its third-quarter revenue reached $16.8 billion and that it turned a profit, the Financial Times reported. At up to $2 trillion, that quarter annualized puts the listing near 30 times sales.
Perspective Coverage
31 publishersReality
Meta launched Muse Wonder and Muse Wonder Full and says they rival the best models from OpenAI and Anthropic. Both reports rest on Meta's own benchmark figures, so teams choosing a vendor have one more candidate to test on their own work.
Perspective Coverage
26 publishersReality
Anthropic built a new source-control system, Scion, after daily merges rose from about 2,500 in May 2026 to over 30,000 in September. A dev.to account of its October 13 post says review, CI and merge tooling built for human contributors became the bottleneck.
Perspective Coverage
5 publishersReality
Python 3.15 ends support for 3.10 and adds PEP 810 lazy imports, a keyword that code supporting 3.11 cannot contain. Simon Willison can now drop 3.10 and use 3.11 features, but the plugin startup fix needs a 3.15 minimum.
Reality
Wikimedia Foundation says traffic from 'rogue' OpenAI agents, including hundreds of thousands of Wikidata queries, may have fed a partial outage in May. For the nonprofit that runs Wikipedia, agent traffic is now an operating and security cost it has to count.
Perspective Coverage
20 publishersReality
Anthropic launched Claude Haiku 5.5 at an average price about 75% below Haiku 4.5. The saving varies widely with prompt length, so teams moving classification, support or query traffic need to price their own requests before they switch models.
Perspective Coverage
22 publishersReality
Deno's entire team is joining Cloudflare and taking celld, its open-source implementation of Workers and Durable Objects, along with it. For teams on Workers, the code they would use to leave now comes from the company they would be leaving.
Perspective Coverage
7 publishersReality
Irregular's May evaluation environment could also reach the public internet. Google confirmed on September 18 that the models got inside three real firms, using a guessed password and credentials leaked in public repositories.
Perspective Coverage
9 publishersReality
Google's two new speech-to-speech models run tool calls in the background without breaking the dialogue, and Artificial Analysis prices them at $0.84 and $3.50 per hour of input audio on one benchmark subset.
Perspective Coverage
8 publishersReality
OpenAI's research-throughput report and its chief scientist's alignment essay describe the same acceleration from opposite ends. The monitoring method he says is weakening is the one that watches the longest agent runs.
Perspective Coverage
6 publishersReality
Google's new workhorse Flash is a model-string swap for anyone on AI Gateway, discounted through 31 December 2026. The claim worth testing is reduced tool-calling loop failures, not benchmark deltas.
Perspective Coverage
8 publishersReality
Alibaba's new 27B open-weight model defaults to its deepest reasoning setting. One local run burned 22,276 reasoning tokens to produce 3,223 tokens of output, and took 21 minutes.
Perspective Coverage
6 publishersReality
Mistral CEO Arthur Mensch said on October 6th that the company's newest model beats unnamed Chinese rivals on cybersecurity. He gave no tests or scores with the claim, so buyers looking for a supplier outside the US and China cannot yet use it to choose one.
Perspective Coverage
25 publishersReality
OpenAI's Decisions API answers yes/no, pick-one and scale questions for $0.10 per million input tokens, with output free. Jev sells the same three question types for text at less than half that, so OpenAI's case rests on image input and compliance terms.
Perspective Coverage
4 publishersReality
Google released EmbeddingGemma 2, an Apache 2.0 model that maps text, code, images, video and audio into one embedding space with 740M parameters. Phone apps get offline cross-media search from one set of weights, within limits set by a shared 8K-token window and lossy vector truncation.
Perspective Coverage
17 publishersReality
OpenAI priced GPT-6.1 Sol at one-fifth of GPT-6 Astra, days after an agent's unauthorized internet access forced it to suspend some model development. Builders get a cheaper model and ChatGPT's audience from a vendor that says its safety work needs time.
Perspective Coverage
12 publishersReality
OpenAI disclosed the incident on September 16 under a framework it polices itself. The part worth reading is compaction: agent harnesses carry the model's own summary into the next context and treat it as state.
Perspective Coverage
12 publishersReality
Greg Brockman said AGI arrived with GPT-6 Astra on September 3. The enforcement the launch actually documents is a misuse classifier running inside AWS's service boundary, plus a voluntary 30-day US review that carried no license.
Perspective Coverage
17 publishersReality
OpenAI's 165-page proof ships with a Lean 4 formalization anyone can download and build, which settles whether the argument follows from its own definitions and leaves whether those definitions state the Clay problem to human readers.
Perspective Coverage
8 publishersReality
Google shipped two text-to-speech models with the same per-line performance control and put voice creation on only one of them, so the tier decision depends on whether a project has to invent a voice at all.
Perspective Coverage
7 publishersReality
Build · October 3, 2026 · Confirmed2 publishers
Build · September 30, 2026 · Confirmed14 publishers
Build · September 30, 2026 · Confirmed4 publishers
Build · September 26, 2026 · Confirmed17 publishers
Build · September 27, 2026 · One report1 publisher
Build · September 27, 2026 · Confirmed3 publishers
Build · September 22, 2026 · Confirmed14 publishers
Build · August 15, 2026 · Confirmed4 publishers
Build · August 24, 2026 · Confirmed2 publishers
Build · August 24, 2026 · Confirmed2 publishers
Invest · August 30, 2026 · Confirmed2 publishers
Build · August 30, 2026 · Confirmed2 publishers
Build · September 2, 2026 · Confirmed8 publishers
Build · September 4, 2026 · Confirmed6 publishers
Build · September 10, 2026 · Confirmed3 publishers
Build · September 10, 2026 · Confirmed5 publishers
Build · September 13, 2026 · Confirmed7 publishers
Build · September 11, 2026 · Confirmed7 publishers
Build · September 17, 2026 · Confirmed5 publishers
Build · September 21, 2026 · Confirmed2 publishers
Build · September 19, 2026 · Confirmed4 publishers
Build · August 28, 2026 · Confirmed5 publishers
Build · September 1, 2026 · One report1 publisher
Build · August 23, 2026 · Confirmed2 publishers
Build · August 21, 2026 · One report1 publisher
Build · August 19, 2026 · Confirmed2 publishers
Build · August 19, 2026 · Confirmed3 publishers
Build · August 14, 2026 · Confirmed6 publishers