AI MODELS

PrismML's Bonsai 27B uses 1-bit quantization to compress a 27B model to 3.9GB - small enough to run on an iPhone. Here's how it works and what HN thinks.

A companion guide to the Claude Fable 5 video: what the first general-use Mythos class model is, the walkthrough beats from the review, hands-on developer takeaways, and the pricing and context specs from primary sources.

OpenAI's GPT-5.6 Sol, Terra, and Luna tiers versus Anthropic's Claude Fable 5 and Mythos 5. Verified pricing, benchmarks, and a practical framework for picking a coding model in July 2026.

xAI's Grok 4.5 ships at $2/$6 per million tokens with 80 TPS speeds, a 500k context window, and benchmark results that put it in the Opus and GPT 5.5 tier. What actually shipped, how the pricing compares, and when it makes sense over Claude, GPT, or Gemini.

Tencent's Hy3 ships 295B parameters but activates only 21B per token, matching flagship performance at flash-tier pricing under Apache 2.0.

xAI launched Grok 4.5, trained on trillions of Cursor interaction tokens. At $2/M input pricing, it undercuts Claude and GPT while benchmarking near Opus 4.7 level.

Meta's Muse Image is now in Meta AI, but it is not a public model API. Here is what the launch confirms, what remains preview-only, and how developers should evaluate it.

Meta launches Muse Spark 1.1 through the new Meta Model API - a 1M-token-context model for personal agentic tasks with OpenAI-compatible endpoints, $20 free credits, and pricing that undercuts the competition.

Meta's first paid API model arrives with $1.25/M input tokens, 1M context window, and strong tool-use benchmarks. HN debates what it means for the open-weights company.

Martin Alderson's argument for why open-weights models like GLM 5.2 will compress frontier lab margins is sparking debate on HN. Here is what the thesis actually says, where HN agrees and disagrees, and why it matters for developers choosing models.

Everything developers need to migrate from Sonnet 4.6 to Sonnet 5 - three breaking API changes, the new effort parameter, tokenizer impact, and when to use each effort level. Verified against Anthropic's official docs on July 4, 2026.

Claude Sonnet 5 lands near Opus 4.8 on some tasks for a fraction of the price - but a new tokenizer runs about 30 percent more tokens. Here is the upgrade decision for builders, with the numbers.

Standing up a fleet of Fable 5 agents is the easy part. This is the operations layer - data retention rules, refusal-rate alerting, effort tuning, observability, and availability planning - that keeps the fleet running.

Anthropic's most capable model launched, got suspended by a US export-control order, and returned today. Here is what Fable 5 is, what changed on the way back, and whether builders should reach for it.

The orchestrator is the most important model choice in an agent fleet. A fair head-to-head between Fable 5 and Opus 4.8 for that role, with a decision matrix by run length, budget, compliance, and refusal-handling tolerance.

A companion guide to the GLM 5.2 video: an open-weight model positioned against GPT-5.5, walked through with benchmarks, pricing, and a live OpenCode demo. Here is what the video covers and where to go deeper.

A companion guide to the GPT-5.5 video: OpenAI's newly released model rolling out to ChatGPT and Codex, reviewed through benchmarks, agent capabilities, context window, and pricing. Here is what the video covers and where to go deeper.

Anthropic releases Claude Sonnet 5 with improved agentic capabilities, better tool use, and an introductory pricing deal. Here's what developers need to know.

Switzerland's fully open foundation model promises transparent training data and EU compliance. The HN crowd has questions about actual performance.

Sakana says Fugu Ultra stands with Fable, Mythos, GPT-5.5, Gemini, and Opus by orchestrating models instead of being one giant model. Here is what the benchmarks show, what is novel, and what still needs proof.