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AISierra announced two new models at Sierra Summit 2026: Curie, which runs the core conversation loop, and Fleming, which detects when a caller is another agent. The company also introduced Tandem Voice, Persona Studio, a reimagined Ghostwriter, and Horizon for long-horizon agent goals, and listed Sierra in the Stripe App Marketplace.
AIStarting October 9, free Google Gemini users will only have access to the Flash-Lite model, and AI Plus subscribers will lose Pro access. Google is also moving to compute-based limits that refresh every five hours, with higher limits for paid plans. The AI Pro plan at $20 per month will gain access to the Deep Think reasoning mode.
AIGoogle researchers, working with Northwestern Medicine and Jacaranda Health, trained healthcare workers to perform "blind sweep" ultrasounds analyzed by machine learning models. The models estimated gestational age and fetal presentation as accurately as a trained sonographer in a study of 1,000 mothers each in Nairobi and Chicago. The AI processes results on the device, so it needs no electricity supply or Wi-Fi.
Waymo@WaymoOfficialAI score54AIWaymo says its vehicles may begin appearing on Detroit roads this week without a human driver. The company says it is not yet picking up riders and invites users to download the Waymo app to be among the first when service launches.
Arthur Mensch@arthurmenschXAI score34AIArthur Mensch posted that Mistral is building AGI from a train station. The quoted post adds that ML4 was trained on 3,800 NVIDIA Grace Blackwell GPUs in Mistral's European datacenters, including its Bruyères-le-Châtel cluster funded by its Series B. Mistral says Series C and D clusters are coming soon to support longer training and faster iteration.
clem 🤗@ClementDelangueXPickAI score62AIMistral announced Mistral Large 4, a natively multimodal model with 1T parameters and 49B active parameters. It is available via API today, with open weights planned for the end of October. Clément Delangue, Hugging Face's CEO, reacted by noting that the model cannot be the best open-weight model until its weights are actually released.
Why it matters: The quoted announcement gives the parameter scale, active count, and availability path, which help readers compare it with other open-weight releases.
X.PIN@thexpinXAI score38AIDeepSeek is close to raising at least 80 billion yuan ($12 billion), up from an original target of about 50 billion yuan, according to Bloomberg citing people familiar with the matter. Tencent and battery maker CATL are among the largest investors in the round, which is expected to close soon. DeepSeek is planning an IPO in early 2027, though details could still change.
AISierra and Meta are developing Personal Agent Protocol, an open standard defining how personal agents interact with businesses, with industry partners including Genesys, Instinct, Rocket, Shopify, Stripe, and Walmart. The protocol uses OAuth sessions where consumers choose read-only or write access and companies choose whether agents reach them through websites, APIs via MCP and OpenAPI, or their own agents. The authors plan to publish the v0.1 specification later this month along with a reference implementation.
Why it matters: The post specifies how personal agents would authenticate and reach businesses through websites, APIs, or company agents, which matters for anyone building agent integrations.
Google Flow@FlowbyGoogleOfficialAI score38AIGoogle Flow now offers Nano Banana 2.1, which Google says improves visual quality and subject consistency for both image generation and editing. Nano Banana Pro and Nano Banana 2 Lite remain available in Google Flow alongside the new model.
Replicate@replicateOfficialAI score29AIReplicate has made Nano Banana 2.1, Google DeepMind's latest image model, available, optimized for a balance of price and performance. The model offers improved visual design, mask-based editing, and subject consistency for more natural-looking images.
Guizang@op7418XAI score22AIHark Pro is now live on web, iOS, and Android as a new personal agent, and early users reportedly get one free month of Pro. The post says the product is powered by Opus 5.5 and Sonnet 5.5, and praises its polished design, detailed animations, and AI-customized cards.
Aravind Srinivas@AravSrinivasXAI score34AIPerplexity says its open-weights multimodal decision model pplx-decider-v1.1-27b ranks first on the new Hugging Face Decision Index 0.3 benchmark. The updated model is available to all, and it costs $0.02 per million input tokens, half the price of v1.
Claude@claudeaiOfficialAI score42AIAnthropic's Claude can now open Google Docs, Sheets, and Slides beside the chat, either from a pasted Google file link or a request for a new file, so users and Claude can edit together. Access follows existing Google sharing permissions. The feature is in beta on all paid plans.
Claude@claudeaiOfficialPickAI score62AIand files from those apps can also be opened within Claude. In Google Workspace, Claude appears in a sidebar next to the open file, reads its contents, and edits it in place, with each edit available for user approval before it is applied.
Why it matters: The source describes Claude working within Google Workspace files and approving edits, a direct change to how users in those apps can collaborate with the model.
Nano Banana 2.1@NanoBananaOfficialAI score40AIGoogle announces Nano Banana 2.1, an upgraded image model that outperforms its previous versions across the board. The company says it brings notable improvements in visual design, mask-based editing, subject consistency, and more natural-looking imagery. It is available now in the Gemini app and Google AI Studio.
Perplexity Developers@perplexitydevsOfficialAI score34AIPerplexity says its pplx-decider-v1.1-27b model supports a 250k context window and accepts text and image input. The weights are available on Hugging Face, and the model can be accessed through the Perplexity Decisions API.
Perplexity Developers@perplexitydevsOfficialAI score38AIPerplexity says its open-weights multimodal decision model pplx-decider-v1.1-27b is now available and scores highest on Hugging Face's new Decision Index 0.3 benchmark. The model costs $0.02 per million input tokens, half the price of v1.
merve@mervenoyannXAI score25AIMerve Noyan has released a slide deck on running AI locally, covering prefill versus decode, MoE versus dense models, VRAM versus unified memory, quantization, and speculative decoding. The deck is built around llama.cpp and is free to reuse with attribution.
Design Arena@DesignArenaOfficialAI score40AIGoogle DeepMind's Nano Banana 2.1, Google's latest image generation and editing model, is now available on Design Arena. The model brings improvements in visual design, mask-based editing, and subject consistency, aiming to produce more natural-looking images with greater control across editing workflows.
eric zakariasson@ericzakariassonXAI score22AIGrok can turn a pasted article or PDF into a podcast where two hosts discuss the content. Each script line is voiced as soon as it is written, so playback begins before the full script is finished. The example code is available in the xai-cookbook repository on GitHub.
eric zakariasson@ericzakariassonXAI score22AIThe xai-cookbook's x-sentiment-tracker lets users pick a topic, then has Grok run one X search per day over the last 10 days and score each post from -1 to +1. The dashboard displays the sentiment split, day-by-day movement, and the posts behind each score.
eric zakariasson@ericzakariassonXAI score37AIThe xai-cookbook example uses Grok to generate a Tailwind React component from a dropped-in screenshot. The page then screenshots its own render, overlays it on the original, and feeds the mismatches back so Grok can refine the layout, raising the match from 60% to 77% in one run.
eric zakariasson@ericzakariassonXAI score32AIA pipeline built with Grok takes a single product photo and produces an eight-second vertical ad, writing the brief, generating three scenes, selecting the best one, animating it, and adding a voiceover. Each run costs about $1.35, and the code is available in the xai-cookbook repository on GitHub.
eric zakariasson@ericzakariassonXAI score36AIxAI's storyboard-to-film example uses grok-4.7 to plan four shots from a one-line premise, then Grok Imagine draws and animates each one with text-to-speech narration. Every shot is an edit of the first keyframe, which keeps the main character consistent across scenes. The code is available in the xai-cookbook repository on GitHub.
eric zakariasson@ericzakariassonXAI score29AICursor has added five apps to its cookbook, all built on the new SpaceXAI TypeScript SDK. The apps cover premise-to-short-film, picture-to-video ads, screenshot-to-React-component, X posts-to-sentiment dashboard, and link-to-podcast conversion. Demos and code are available in the post.
LangChain@LangChainOfficialAI score46AILangChain's Sydney Runkle presents a four-step method for building a model router into a coding agent harness: understanding tasks, understanding models, building the router, and tracking task outcomes. The background post says the router cut costs by 64% without reducing quality by sending tasks that do not need a frontier model to cheaper models.
👩💻 Paige Bailey@DynamicWebPaigeXAI score20AIGoogle's Gemini Nano Banana 2.1 image model is available on fal from day zero, according to Paige Bailey's post thanking fal. The fal background adds that it generates significantly faster than Nano Banana 2 and improves visual design, mask-based editing, and subject consistency.
AMD@AMDOfficialAI score24AIOpenAI selected AMD EPYC "Turin" CPUs to host its Jalapeño AI ASIC deployment, citing platform strength, partner experience, and reducing unnecessary risk. The post, which links to a Tom's Hardware report, says AMD aims to deliver reliable solutions for leaders facing aggressive AI performance goals.
Georgi Gerganov@ggerganovXAI score28AIllama.cpp added day-0 support for EmbeddingGemma 2, with GGUF builds available on Hugging Face under ggml-org. The post links to the embeddinggemma-2-GGUF model page as the way to run it.
Claude@claudeaiOfficialAI score25AIAnthropic's Claude Startup Stack combines offers from companies building with Claude, including Linear, Lovable, ElevenLabs, Granola, and Hex. Startups get discounts and credits worth up to $45,000 on tools spanning sales, design, data engineering, and more.
ARC Prize@arcprizeOfficialAI score39AIARC Prize reports that Grok 4.7's reasoning-token usage correlates with its ARC-AGI-2 public scores. The low setting averaged about 10k tokens per test-pair attempt and scored 25%, while medium through xhigh used 86k to 120k tokens and scored 57.5% to 60%. ARC Prize suggests the lower token usage may help explain the low setting's lower score.
ARC Prize@arcprizeOfficialAI score31AIARC Prize published full Grok 4.7 results from the xAI model on its public leaderboard. The post links to the leaderboard, a GitHub repository for reproducing the results, and the ARC Prize testing policy.
ARC Prize@arcprizeOfficialAI score28AIGrok 4.7 scored 1.8% on ARC-AGI-3 in the standard harness, which lets models carry notes between turns, slightly below the 2.1% reported for Grok 4.7 in that setting. In a new provider adapter harness that preserves opaque reasoning and enables auto compaction, the score rose to 10.0%.
ARC Prize@arcprizeOfficialAI score29AIOn ARC-AGI-2, Grok 4.7's best score is 61.4% at $2.01 per task, down from Grok 4.6's 67.1% at $0.76 per task. The post notes cost per task rose 166% despite identical input and output token pricing.
ARC Prize@arcprizeOfficialAI score22AIGrok 4.7 used more reasoning tokens on average than Grok 4.6 on ARC-AGI-2 semi-private tasks at medium, high, and xhigh reasoning levels, raising its cost per task. Per test-pair attempt, medium used 136% more tokens, high 125% more, and xhigh 173% more, while low used 27% fewer. A chart compares the two models at xhigh on the 20 public tasks where Grok 4.7 increased token use the most.
ARC Prize@arcprizeOfficialAI score38AISpaceXAI's Grok 4.7 scored 90.2% on ARC-AGI-1 at $0.64 per task, higher than Grok 4.6, according to ARC Prize. It reached 61.4% on ARC-AGI-2 at $2.01 per task and 1.8% on ARC-AGI-3 under the standard harness ($2.7k), or 10.0% with the provider adapter harness ($4.8k), both lower than Grok 4.6 on those two benchmarks.
👩💻 Paige Bailey@DynamicWebPaigeXAI score54AIGoogle's EmbeddingGemma 2 is an open embeddings model for on-device use that covers code, image, video, audio, and text. It comes in modular sizes from 270M text/code to 740M full multimodal, supports Matryoshka truncation down to 128 dimensions, and reports a 14% gain on MTEB Code over v1 under an Apache 2.0 license. The author's post highlights the release and a Hugging Face demo, while the benchmark table compares it with several models.
lauren@potetoXAI score39AILauren Tan describes using Grok Bot to connect apps like Slack, email, and CRM so it can gather context and decide what work to do. She also explains scheduled and event-triggered routines, plus handing engineering tasks to Cursor cloud agents, with a daily feedback-to-merge loop example.
Krea@krea_aiOfficialAI score36AIKrea has made Nano Banana 2.1 available on its platform, promising better prompt understanding, sharper edits, and stronger subject consistency. The model now supports generations up to 4K resolution.
Dongxi NLP@dongxi_nlpXAI score34AIMistral AI has released Mistral Large 4, a model nicknamed "Le Chonk," according to a post by Dongxi NLP. The post also highlights "sovereign AI" as a keyword, tying the release to the theme of national or independent AI capability. No specifications, benchmarks, or pricing are given in the post itself.