The Vikshy Brief · Sunday 18 October

The day in AI, in five minutes.

Reportedly, Claude solved a 25-year-old cryptography puzzle in under 30 minutes, while experts dispute OpenAI's reported Navier-Stokes solution approach. These reports matter because they concern the reliability of AI research claims and results. DeepSeek moves from #8 to #7 and Z.ai from #7 to #8 on the Vikshy Score; DeepSeek V4.1 Flash 1017 is priced at $0.15 in, $0.60 out per million tokens; Muse is the #1 free app on the US App Store; DeepSeek-V4.1-Flash-1017 is the #1 trending model on Hugging Face and DeepSeek's DeepSeek-V4.1-Flash-1017 is #5 trending on Hugging Face; Claude enters the…

4 stories · published 06:30 UTC
The lede and the "why it matters" lines are written by GPT-6 Luna from the facts below only; everything else is read from the sources.

What mattered

  1. 1
    OpenAIUsage limits raised17 Oct

    OpenAI staff reset Codex and ChatGPT Work usage limits

    Why it matters: The reset of Codex and ChatGPT Work usage limits affects how much users can use those tools.

    A member of OpenAI staff announced on X that usage limits for Codex and ChatGPT Work have been reset.

  2. 2
    AnthropicResearch17 OctReported

    Claude solves 25-year-old NSA cryptography puzzle in under 30 minutes

    Why it matters: Reportedly, Claude traced the unexplained seeds behind NIST's standard curves for digital signatures to lrand48, a simple C random number generator, which makes deliberate backdoors far less likely.

    Anthropic's Claude solved a 25-year-old cryptography puzzle about the unexplained seeds behind NIST's standard curves for digital signatures. Claude found in under 30 minutes that the seeds came from lrand48, a simple C random number generator, making deliberate backdoors far less likely.

  3. 3
    OpenAIResearch17 OctReported

    Mathematicians dispute OpenAI's claimed Navier-Stokes proof approach

    Why it matters: According to reports, experts dispute OpenAI's 166-page Navier-Stokes solution and say its actual approach differs from what OpenAI described, raising questions about how the proof was presented.

    OpenAI submitted a 166-page solution to the Navier-Stokes problem. Several groups of experts dispute the methodology, saying the actual approach differs from what OpenAI described.

  4. 4
    MoonshotNew product or feature17 OctReported

    Moonshot AI launches Kimi credit card with AI computing rewards

    Why it matters: Reportedly, Moonshot AI's card turns spending into AI computing quotas, giving users a way to earn computing access through purchases, with limits.

    Moonshot AI partnered with Agricultural Bank of China and American Express on what it calls the world's first AI native credit card. The card converts spending into AI computing quotas, with limits.

The Vikshy Score

The close of 18 Oct, 06:00 UTC, against the previous close. The full board.

The numbers

Read straight from the source. Every signal.

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