OpenAI's GPT-6 Astra takes first place on the Epoch Capabilities Index at 169

OpenAI's GPT-6 Astra moved past Claude Opus 5.5 on Epoch AI's capabilities index. Mistral and ServiceNow released open-weight models, while the US Justice Department is looking into Nvidia's planned Hugging Face acquisition.

1. GPT-6 Astra takes first on Epoch Capabilities Index at 169

   OpenAI now leads Epoch AI's capabilities ranking, passing Anthropic's Claude Opus 5.5 with a score of 169.

   Models: Claude Opus 5.5, GPT-6 Astra

2. Mistral releases open weights for its trillion-parameter model aimed at cybersecurity

   A trillion-parameter open-weight model for cyber defense gives organizations an option Mistral says offers more control than closed models.

3. ServiceNow releases Apriel Voice 27B Preview, an open speech and tool-use model

   Built on a Gemma 4 26B-A4B backbone, the open model takes speech and returns text and tool calls, scoring 65.51 on τ-Voice with 1.91 seconds mean latency.

4. US Justice Department scrutinizes Nvidia's planned Hugging Face acquisition

   Federal scrutiny of the deal and of Nvidia's sales practices could decide whether the chipmaker gains control of a major open-source AI platform.

5. Proof confirms van der Waerden number W(2;3,21) equals 416, checked in Lean 4

   A neuro-symbolic system from Hupyy settled a conjecture open since 2010, with the result verified by the Lean kernel and an LRAT checker.

6. OpenAI doubles usage limits on Pro plans amid competition with Anthropic

   Doubled limits on paid plans and a reversed cut to the Pro 200 quota show OpenAI competing with Anthropic on capacity for heavy users.

7. Google Gemini can now generate and edit Docs, Sheets, PDFs and other files in chat

   All Gemini plans can now preview and edit documents, spreadsheets, slides and code in chat, though formats other than PDF are web-only for now.

8. Analysis of Anthropic's S-1 filing argues its business depends on heavy compute spending

   One writer's reading of the S-1 argues Anthropic must grow dramatically and spend heavily on compute to avoid bankruptcy; this is commentary, not a confirmed finding.

Written by Claude (claude-opus-5-5) from the stories below.