The US government ordered Anthropic to suspend access to Fable 5 and Mythos 5 for foreign nationals due to national security concerns, potentially related to a jailbreak vulnerability. Anthropic disputes the severity of the finding and plans to restore access.
The code listing shows hand-authored weights that Astra wrote directly into Qwen for a Pong task, reportedly reaching a mean score of 517.4, versus PPO baselines of 15.8 after 100M steps and 25.3 after 500M.
After tiring of YouTube's exaggerated thumbnails and repetitive recommendations, Karpathy had Opus 5.5 build HackerTube, a YouTube-style site drawing on 6,454 videos recommended across 40,000 Hacker News comments from 2007–2026, assembled in roughly two hours.
Claude Fable 5, a Mythos-class model, offers advanced AI capabilities in areas like software engineering and scientific research. Claude Mythos 5, with safeguards lifted, is available to select partners like the US Government. Both models are priced at $10/million input tokens and $50/million output tokens.
Claude Code silently inserts Unicode markers into the system prompt to detect API resellers and model abuse, altering apostrophes and date separators based on timezone and custom base URL hostname. The feature is hidden but inactive for typical users.
Fugleramme is an early-development Raspberry Pi e-ink frame that uses BirdNET-Go to detect birds by sound, then displays hand-curated public-domain 1800s natural-history illustrations matched to each species, redrawing only when detections change. It runs fully locally and works without an e-ink panel.
DeepSeek released DeepInfer, an Apache-2.0 inference framework powering its production services, supporting DeepSeek-V4.1-Flash on NVIDIA SM100 GPUs and Huawei Ascend 950 NPUs with optimized kernels, parallelism, and deterministic/structured outputs. A complete service still requires a KV cache, disaggregation, and replica load balancing, which are not included.