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22:26
2026-05-20
simonwillison.net
artificial-intelligence

Quoting SpaceX S-1

SpaceX disclosed in its S-1 filing that it provides compute capacity for its proprietary AI applications, including training Grok 5 at COLOSSUS II, while also selling access to third parties. In May 2026, SpaceX signed c…

00:00
2026-05-20
tomtunguz.com
artificial-intelligence

The Unsustainable Subsidy

Google's AI pricing has tripled annually, while OpenAI's flagship model rose after a period of apparent subsidy, and Anthropic held steady before cutting costs on its most powerful models. The three vendors now face tigh…

22:57
2026-10-12
thewatershed.markpesce.com
ai-agents

In Harness

Testing published in September 2026 across nine harnesses using the same Kimi K3 model, identical hardware and 360 trials found pass rates ranging from 66.7% with OpenAI's Codex to 50.0% with both OpenCode and Hermes, wh…

09:29
2026-10-11
shelley.dev
ai-agents

Shelley – a coding agent that lives in the browser

Bold Software released Shelley, an open-source, self-modifying coding agent that runs as a web page and installs via `brew install --cask boldsoftware/tap/shelley`. Shelley runs multiple concurrent conversations, each wi…

10:11
2026-10-10
businessinsider.com
ai-ethics

Why am I so mean to my AI?

Anthropic is banning "sustained and needless abusive or cruel behavior" toward its AI models under new usage rules that target "extreme cases, where users repeatedly act cruelly toward our models, with no discernible pur…

06:08
2026-10-10
byteiota.com
large-language-models

Claude Opus 5.5: 4 Breaking Changes Hitting Production

Anthropic's Claude Opus 5.5, shipped September 22, is 40% cheaper than Opus 5, 30% faster, and beats GPT-6 Astra on benchmarks at one-third the cost, but four API changes throw 400 errors when teams flip the model ID. Th…

17:23
2026-10-09
wiredream.com
artificial-intelligence

Two Futures for LLMs in Mathematics

Anthropic handed a result to Columbia's Josh Alman and MIT's Virginia Williams, whose follow-up paper showed 3SUM can be solved in O(n^1.9992) time, breaking the long-held O(n^2) bound, while OpenAI separately released a…

00:13
2026-10-08
zenmux.ai
large-language-models

New Model Available: Claude Haiku 5.5

Anthropic released Claude Haiku 5.5, which the company calls its cheapest, fastest, and most capable small model to date, priced at $0.10-$0.50 per million input tokens and $0.50-$2.50 per million output tokens. Anthropi…

18:02
2026-10-07
a16z.news
ai-safety

Investing in Preference Model

Preference Model open-sourced Karotte, a framework it has used in production to build reinforcement learning environments for leading AI labs, hardened through more than a million evaluation runs and controlled red-teami…

00:00
2026-10-07
vercel.com
ai-products

Claude Haiku 5.5 now available on AI Gateway

Anthropic's Claude Haiku 5.5 is now available on Vercel's AI Gateway under the model name anthropic/claude-haiku-5.5, positioned as a direct upgrade to Claude Haiku 4.5 for high-volume, cost-sensitive tasks such as summa…

16:21
2026-10-05
stork.ai
large-language-models

Stop Prompting Opus 5.5 Like It’s 2024

Anthropic's Opus 5.5 model now performs adaptive thinking, dynamically allocating its internal reasoning budget, so Anthropic's testing shows generic reasoning cues like "think carefully" or "think step-by-step" add late…

00:00
2026-10-01
theaspiringnerd.com
artificial-intelligence

The Monthly Dispatch - August & September 2026

OpenAI released GPT-6 Astra, its new flagship model, alongside cheaper GPT-6 Sol and Luna tiers and a GPT-6.1 Sol upgrade, while Anthropic shipped Claude Opus 5.5 and Claude Sonnet 5.5, according to the August and Septem…

18:57
2026-09-28
aws.amazon.com
large-language-models

Introducing Claude Sonnet 5.5 on AWS

Anthropic's Claude Sonnet 5.5 is now available on Amazon Bedrock and Claude Platform on AWS, AWS announced, offering lower cost per task for most work at faster speed than Sonnet 5. The model is positioned for well-scope…

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