Anthropic launched Claude Fable 5.1 and Claude Mythos 5.1, with Fable 5.1 priced an estimated 25% less than Fable 5 for typical token-billed workloads and up to 45% less for highly agentic workloads d…
Anthropic unveiled Claude Fable 5.1 on Tuesday with a new Enterprise Frontier Safeguards policy that lets enterprise customers store monitoring data in their own cloud instances under their own retent…
Anthropic announced the availability of Claude Fable 5.1 on Amazon Bedrock and Claude Platform on AWS, designating it a Covered Model with data retention up to 30 days and human review. The model impr…
Anthropic released Claude Fable 5.1, a successor to Claude Fable 5, at the same input and output prices with cache reads at a quarter of the cost, adding stronger long-running agentic coding, multiste…
Anshu Chimala, who led software engineering and design teams at Apple for 12 years, shares techniques in a newsletter post for unlocking AI's creative potential in design, arguing that typical LLMs pr…
Anthropic's Claude Fable 5.1, released September 1, 2026, strips its thinking blocks when a conversation is downgraded to an older model, causing the target model to re-plan without that reasoning and…
Anthropic released Claude Fable 5.1 on September 1, 2026, cutting cache-read pricing by 75% to $0.25 per million tokens while keeping base input at $10 and output at $50 per million tokens, yielding a…
Prodigy Research, a two-person Y Combinator-backed lab founded by brothers Michael Wang and Yuhua Wang, claims its AI-driven delta-neutral trading strategies returned 140% during Y Combinator's Summer…
Anthropic appears to be preparing Claude Fable 5.1 for Amazon Bedrock, according to an API response uncovered on Monday, August 31st, that distinguishes the unlisted model from invalid identifiers. Th…
Artificial Analysis released a comparison of 13 frontier AI models, ranking them by fidelity, cost, and speed, with GPT-5.6 Sol and DeepSeek V4 Pro 0813 achieving the highest fidelity (99-100), while …
DogLM, a new benchmark created by Mike Ushakov, tests whether large language models (LLMs) let players pet a dog in AI-generated video games, inspired by the 'Can You Pet the Dog?' rule. In tests of 1…
A federal judge ruled that the Trump administration acted illegally when it designated Anthropic's AI models as a supply chain risk, determining the move was unlawful retaliation for the company's pro…
Beijing-based Moonshot AI released its Kimi K3 model with open weights, positioning China's open software approach as safer than the closed strategies of Silicon Valley rivals OpenAI and Anthropic. Th…
A fine-tuned model called ReViSQL-K2.6, developed by Tinker using reinforcement learning with verifiable rewards, exceeds the human benchmark of 92.96% on the BIRD text-to-SQL task, reaching 92.96% wh…
DeepSeek V4 Flash scored 30/42 on IMO 2026 problems in Cline, clearing the 29-point gold medal cutoff for just $0.12, roughly 140 times cheaper than Claude Fable 5. The benchmark, run by Cline, tested…
OpenAI researchers developed scalable long-horizon reinforcement learning environments for browser use from real user traffic, filtering several hundred million task submissions down to about ten mill…
Anthropic's Claude Opus 5 and Claude Fable 5 exhibit distinct failure modes, including Opus 5's constant praise, imprecise commentary, and a tendency to end statements with negations, while Fable 5 in…
Ox Alpha, the anonymous reasoning model that appeared on OpenRouter and OpenCode on August 20, has been revealed as a new iteration of the GLM series from Chinese lab Z.AI, which will release the mode…
A software engineer at a 50-person startup asked on Hacker News why Anthropic's Claude models (Fable 5, Opus, Sonnet) are more verbose than competitors like GPT-5.6 Sol and Grok 4.6, producing extra c…
Polymarket traders have placed 74% odds on Anthropic releasing its next Mythos-class AI model by September 9, 2026, with trading volume on the contract family surpassing $233,000. The prediction marke…