Sarah Chen
TeqVolt contributor

Sarah Chen

AI researcher and tech journalist covering the frontier of machine intelligence. Previously at MIT Tech Review.

Stories by Sarah Chen

81 published
AI News

Nemotron 3.5 Lightning: Nvidia's 3B-Active Agent Workhorse

Nvidia released Nemotron 3.5 Lightning on August 11, 2026: an open 30B mixture-of-experts model with 3B active parameters, licensed under OpenMDW-1.1 with weights, training data and recipes included. It targets the execution layer of long-running agents rather than frontier reasoning, reaching 86% accuracy on PinchBench while completing 10,000 tasks 30% faster than Qwen3.6 35B, and up to 4x the output speed of similar-sized models. Speed comes from baked-in multi-token prediction plus DSpark and DFlash draft models, with NVFP4 and BF16 checkpoints. It runs on Jetson, RTX 5090 and DGX Spark via LM Studio, llama.cpp, Ollama and Unsloth, and ships alongside NeMo Switchyard for routing planning to frontier models and execution to Lightning.

Aug 12, 2026 · 6 min read
AI News

Seedance 2.5: ByteDance's 30-Second Video Model With Native Audio

ByteDance released Seedance 2.5 on July 31, 2026. It generates 30-second video clips with audio in a single pass, supports multi-turn extension, and accepts up to 30 images, 10 videos, and 10 audio files as reference per input. Google's Gemini Omni Flash currently caps output at 10 seconds and does not yet support audio reference uploads or scene extension in the Gemini API. Seedance 2.5 launched on Jimeng AI and Doubao Pro; BytePlus ModelArk published a Seedance 2.5 tutorial on August 7, 2026, but regional API availability should be verified before building a production dependency.

Aug 10, 2026 · 7 min read
AI News

Muse Code: Meta's Terminal Agent Is Cheap If You Pay in Code

Meta Superintelligence Labs released Muse Code, a beta terminal coding agent for macOS and Linux powered by the new Muse Spark 1.2 model, on August 5, 2026. Meta reported 82.9% on Terminal-Bench 2.1 but placed behind Claude Opus 5 on all three coding charts it published, and both figures come from Meta's own harness with no verified leaderboard entry. Meta's previous model published 80.0 and verified at 76.2% when the Terminal-Bench team ran it. The genuinely notable engineering is an append-only event log that makes runs replay-exact and restart-safe, plus persistent async background agents. The most consequential detail is pricing: a contributor tier at $0.10 per million input and $0.20 per million output tokens, 12.5x and 21x cheaper than standard, in exchange for Meta training on your prompts.

Aug 6, 2026 · 8 min read
AI News

DeepSeek V4 Flash 0731: Frontier Agent Work at $0.14

DeepSeek upgraded its deepseek-v4-flash API to the 0731 public beta on July 31, 2026 — an API-only post-training update that leaves the 284B/13B MoE architecture, 1M context window and $0.14/$0.28 pricing untouched. Artificial Analysis measures a 10-point Intelligence Index jump to 50 and a GDPval-AA v2 rise from 1189 to 1559 Elo, with Cost per Task roughly 60% below GPT-5.6 Luna. Accuracy on AA-Omniscience is unchanged at 37%, and the 0731 weights are not open — only the April 24 checkpoint is on Hugging Face under MIT.

Aug 5, 2026 · 6 min read
AI News

Qwen3.8-Max: Alibaba's 2.4T-Parameter Flagship Goes Live

Alibaba released Qwen3.8-Max on August 3, 2026, a 2.4-trillion-parameter mixture-of-experts model with a 1M-token context window, multimodal (text/image/video) input, and $2/$6 per-million-token pricing. Benchmarks are self-reported and lead on multimodal and agentic tasks while trailing the frontier on pure software engineering. Open weights for the flagship and a deployable 27B checkpoint are promised the following week.

Aug 4, 2026 · 4 min read
AI News

DeepSeek V4: 1.6T Open Weights and 1M Context, Now the Default

DeepSeek released V4 as two open-weight mixture-of-experts models: V4-Pro (1.6T total / 49B active) and V4-Flash (284B / 13B active), both with a 1M-token default context and 384K max output. A novel token-wise compression plus DeepSeek Sparse Attention (DSA) makes the long window affordable. API pricing is aggressive (V4-Flash $0.14/M input, $0.28/M output; V4-Pro $0.435/$0.87), and the old deepseek-chat and deepseek-reasoner endpoints were retired after July 24, 2026. Reported ~80.6% on SWE-bench Verified.

Aug 1, 2026 · 5 min read
AI News

Laguna S 2.1: Poolside's 118B Open-Weight Coding Model

Poolside released Laguna S 2.1 on July 21, 2026, a 118B-parameter Mixture-of-Experts coding model activating ~8B params per token, with a 1M-token context and a permissive OpenMDW-1.1 license. First-party benchmarks show 78.5% on SWE-Bench Multilingual, but independent verification is still pending. Day-one FP8/NVFP4/INT4 and GGUF builds make it genuinely self-hostable.

Jul 31, 2026 · 5 min read
AI News

FLUX 3: Black Forest Labs' One Model for Video, Audio & Action

FLUX 3, released July 23 2026, is Black Forest Labs' first multimodal model to generate video, audio, and robot actions from one set of weights, built on the Self-Flow method. FLUX 3 Video produces up to 20-second clips with native audio and led human-preference tests over Luma Ray 3.2 (93%) and Runway Gen-4.5 (77%), tying Seedance 2.0 and Gemini Omni Flash at 52%. Access is gated: video and action first, image next, open weights last.

Jul 28, 2026 · 5 min read
AI News

Claude Opus 5: Near-Frontier Intelligence at Half the Price

Claude Opus 5, released July 24, 2026, is Anthropic's new default model: near-Fable 5 capability at $5/$25 per million tokens (half Fable 5's price, flat vs Opus 4.8). It leads on Anthropic's own runs of Frontier-Bench, OSWorld 2.0, AutomationBench, ARC-AGI-3 and GDPval, but loses on DeepSWE, HLE, a legal benchmark and HealthBench. It posts Anthropic's lowest misalignment score (2.30), ships with no default data retention, and adds beta tool-swapping and safety-filter model routing.

Jul 26, 2026 · 7 min read
AI News

Etched: The $5B Sohu Chip Betting the Transformer Never Dies

Etched, a startup building the transformer-only Sohu inference ASIC, has booked over $1 billion in contracts and reached a $5 billion valuation, with reports of new rounds valuing it up to $20 billion. Sohu hard-wires the transformer graph into silicon on TSMC N4P with 144GB HBM3E, and Etched claims an 8-chip server exceeds 500,000 Llama 70B tokens/sec. No independent benchmarks exist yet.

Jul 25, 2026 · 5 min read
AI News

Project Perception: Microsoft's Cheaper Rival to Claude Mythos

Microsoft is reportedly developing Project Perception, a multi-model AI security platform that routes vulnerability-scanning tasks across models from Microsoft, OpenAI, and Anthropic to reserve expensive frontier calls for high-value steps. Its pitch is matching Anthropic's Claude Mythos on capability while costing far less. Microsoft has not officially confirmed details, so the news should be treated as a credible report pending benchmarks.

Jul 21, 2026 · 5 min read
AI News

Inkling: Mira Murati's Thinking Machines Ships Its First Open Model

Thinking Machines Lab, founded by ex-OpenAI CTO Mira Murati, released Inkling on July 15, 2026 — an open-weight mixture-of-experts model with 975B total parameters (41B active), trained on 45 trillion multimodal tokens. The company openly says it isn't the strongest model available; instead it's a customizable foundation enterprises fine-tune via the Tinker platform. The release doubles as an argument that owned, adaptable models beat rented one-size-fits-all APIs.

Jul 18, 2026 · 5 min read
AI News

Kimi K3: Moonshot's 2.8T Open Model Nears the Frontier

Moonshot AI released Kimi K3 on July 16, 2026, a 2.8-trillion-parameter open Mixture-of-Experts model that activates 16 of 896 experts, ships native vision and a 1M-token context, and leads benchmarks like SWE Marathon, BrowseComp, and OmniDocBench while trailing Fable 5 and GPT-5.6 Sol overall. Weights release July 27 under a Modified MIT license.

Jul 17, 2026 · 5 min read
AI News

Cognition SWE-1.7: Near-Frontier Coding at $2 a Task

Cognition released SWE-1.7 on July 8, 2026, a software-engineering model built by reinforcement-learning on top of Moonshot AI's Kimi K2.7 base and served through Cerebras at ~1,000 tokens/second inside the Devin agent. It scores 42.3% on FrontierCode 1.1 and 81.5% on Terminal-Bench 2.1, trailing Opus 4.8 by a few points at roughly $1.97 per task, positioning it as a near-frontier option at a fraction of frontier cost.

Jul 14, 2026 · 5 min read
AI News

Muse Spark 1.1: Meta's Cheap Coding and Agent Model API

Meta released Muse Spark 1.1 on July 9, 2026, opening its reasoning model to developers via a paid API priced at $1.25/M input and $4.25/M output tokens, undercutting Grok 4.5 and Anthropic's Opus. Meta claims wins over older rival models and Google's latest Gemini, but did not compare against the newest flagships, and a bigger model code-named Watermelon is still in training.

Jul 13, 2026 · 6 min read
AI News

Grok 4.5: xAI's Opus-Class Coder at a Third of the Price

Grok 4.5, released July 8, 2026, is xAI's coding-focused model. It ranks 4th on the Artificial Analysis Intelligence Index (score 54), wins SWE Marathon (29%), and prices at $2/$6 per million tokens with 4.2x better token efficiency than Opus 4.8. Not yet available in the EU.

Jul 12, 2026 · 5 min read
AI News

GPT-5.6: OpenAI's Sol, Terra, and Luna Go Public

OpenAI made its three-tier GPT-5.6 family (Sol, Terra, Luna) generally available on July 9, 2026 after government safety review. Pricing runs from Luna at $1/$6 to Sol at $5/$30 per 1M tokens, with a Sol Fast option at $12.50/$75 on Cerebras. The release adds Programmatic Tool Calling in the Responses API (63.5% fewer tokens, 50.1% fewer turns) and longer prompt caching, but Sol's 64.6% on SWE-Bench Pro still trails Claude Mythos 5 (80.3%).

Jul 11, 2026 · 5 min read
AI News

GPT-Realtime-2.1: OpenAI Adds Reasoning to Its Voice API

On July 6, 2026, OpenAI released GPT-Realtime-2.1 and GPT-Realtime-2.1-mini for the Realtime API. The headline change is reasoning in the low-cost mini tier, plus a 25% cut in p95 latency from better caching. The mini holds the prior gpt-realtime-mini price (0 audio in, 0 audio out per 1M) while the full model runs 2/4. Reasoning effort is configurable from minimal to xhigh.

Jul 8, 2026 · 5 min read
AI News

Gemini 3.5 Flash: The Flash Model That Beats Google's Own Pro Tier

Google released Gemini 3.5 Flash on May 19, 2026, at Google I/O. The Flash-tier model beats Gemini 3.1 Pro on coding and agentic benchmarks (76.2% Terminal-Bench 2.1, 83.6% MCP Atlas, 1656 GDPval-AA Elo) while running 4x faster and costing $1.50/$9 per 1M tokens, 40% below 3.1 Pro. It trails Pro on academic reasoning (Humanity's Last Exam, ARC-AGI-2) and dense long-context recall. It powers Gemini Spark, Antigravity 2.0, and is now the default model for the Gemini app and AI Mode in Search.

Jul 7, 2026 · 5 min read
AI News

Claude Science: Anthropic's AI Workbench for Scientists Is Live

Anthropic launched Claude Science on June 30, 2026, an AI research workbench for Pro, Max, Team, and Enterprise users on macOS and Linux. A coordinating agent taps 60+ skills and connectors across genomics, proteomics, and cheminformatics, generates fully reproducible artifacts, manages HPC and Modal compute, and runs a reviewer agent that checks citations and calculations. Early users at the Allen Institute, UCSF, and Manifold Bio report large speedups. Anthropic is funding up to 50 AI for Science projects with up to $30,000 in credits each; applications close July 15, 2026.

Jul 6, 2026 · 5 min read
AI News

OpenAI Jalapeño: Custom AI Chip Aims to Beat Nvidia

OpenAI unveiled Jalapeño, its first custom inference chip co-designed with Broadcom on TSMC 3nm. Built in a nine-month design cycle, the reticle-sized ASIC targets roughly 50% lower inference cost than current Nvidia GPUs, with deployment starting late 2026 and Microsoft reportedly taking 40% of the first run for Azure.

Jul 6, 2026 · 4 min read
AI News

Claude Fable 5: The Coding Crown Returns After 19 Days Offline

Claude Fable 5, Anthropic's Mythos-class model, was suspended June 12, 2026 under a U.S. export-control directive and restored July 1 after Anthropic made security commitments. It leads coding benchmarks at 80.3% SWE-Bench Pro (vs 69.2% for Opus 4.8) and 29.3% FrontierCode. A grace window counts it toward 50% of weekly usage through July 7; credits billing follows.

Jul 3, 2026 · 5 min read
AI News

GPT-5.6 Sol: OpenAI's Best Model, Held Back by Washington

On June 26, 2026, OpenAI previewed the GPT-5.6 series — Sol (flagship), Terra (balanced, 2x cheaper than GPT-5.5), and Luna (fastest, cheapest) — but restricted access to trusted partners at the US government's request due to the models' strong cybersecurity capabilities. OpenAI paired the release with its most robust layered safeguard stack and said it does not want government pre-release review to become the default.

Jul 2, 2026 · 6 min read
AI News

Claude Sonnet 5: Anthropic's Most Agentic Mid-Tier Model Yet

Claude Sonnet 5, released June 30, 2026, is Anthropic's most agentic mid-tier model. It beats Sonnet 4.6 on every published benchmark (63.2% SWE-bench Pro, 80.4% Terminal-Bench 2.1, 81.2% OSWorld) and edges Opus 4.8 on GDPval-AA v2 knowledge work. Intro pricing is /0 per million tokens through Aug 31, 2026, then /5. A new tokenizer can raise token counts up to 1.35x, and xhigh effort can cost more than Opus 4.8.

Jul 1, 2026 · 5 min read
AI News

MAI-Thinking-1: Microsoft's First In-House Reasoning Model

Microsoft unveiled MAI-Thinking-1 at Build 2026, its first reasoning model trained in-house without distillation. The 35B-active, ~1T-total MoE has a 256k context window, scores 97.0% on AIME 2025 and matches Claude Opus 4.6 on SWE-Bench Pro. It's in private preview on Microsoft Foundry.

Jun 23, 2026 · 5 min read
AI News

Mistral: The Industrial AI Pivot Behind Airbus and BMW Deals

Mistral AI used its May 2026 AI Now Summit to pivot toward industrial engineering, announcing a physics-AI stack, the Emmi acquisition, partnerships with Airbus, BMW (crash simulation) and ASML, the unified Vibe agent, and a 10 MW Les Ulis inference data center opening Q3 2026.

Jun 19, 2026 · 5 min read
AI News

Meta Business Agent: Now Global on WhatsApp & Instagram

On June 3, 2026, Meta made Meta Business Agent globally available to businesses of all sizes across WhatsApp, Messenger, and Instagram. The agent answers questions, recommends catalog products, books appointments, qualifies leads, and closes sales, with human handoff. A new Business Agent Platform connects to hundreds of systems like Shopify, Zendesk, and Shopee. It's free to start, with token-based pricing for larger businesses.

Jun 17, 2026 · 5 min read
AI News

Kimi K2.7-Code: A 30% Token Cut With a Benchmark Asterisk

Moonshot AI's Kimi K2.7-Code is an open-weights, OpenAI-compatible coding model (1T-param MoE, 32B active, 256K context) claiming a 30% cut in reasoning tokens and a narrow win over Claude Opus 4.8. But all published benchmarks are Moonshot's own proprietary suites, with no independent results yet, so the efficiency claims remain unverified.

Jun 14, 2026 · 5 min read
AI News

Apple Siri: Why Apple Is Paying Google $1B for Gemini

At WWDC 2026, Apple unveiled a rebuilt Siri powered by a custom, Apple-tuned Google Gemini model—reportedly a 1.2-trillion-parameter mixture-of-experts system costing roughly $1 billion a year. On-device Apple Silicon models handle quick private tasks, while complex reasoning routes to the Gemini model inside Apple's Private Cloud Compute, with a contract barring Google from training on Apple user data.

Jun 11, 2026 · 5 min read
AI News

Gemma 4 12B: Google's Encoder-Free Multimodal Laptop Model

Google released Gemma 4 12B on June 3, 2026, a multimodal open model with an encoder-free architecture that feeds vision and audio directly into the LLM backbone. It runs locally on 16GB of memory, approaches the 26B MoE on benchmarks, uses Multi-Token Prediction drafters for low latency, and ships under Apache 2.0 with broad tooling support.

Jun 9, 2026 · 5 min read
AI News

MAI-Code-1-Flash: Microsoft's Lean Coding Model Hits Copilot

Microsoft launched MAI-Code-1-Flash on June 2, 2026, a lightweight, agentic coding model built end-to-end in-house and rolling out to GitHub Copilot users in VS Code. It outperforms Claude Haiku 4.5 across four coding benchmarks (including 51.2% vs 35.2% on SWE-Bench Pro) while using up to 60% fewer tokens, signaling Microsoft's push for AI independence from OpenAI.

Jun 6, 2026 · 5 min read
AI News

DeepSeek V4-Pro: 75% Price Cut Becomes Permanent

On May 22, 2026, DeepSeek made its 75% promotional discount on V4-Pro permanent rather than letting it expire May 31. New permanent rates: $0.435/M input, $0.87/M output, $0.003625/M cache hit. That puts V4-Pro output roughly 34x cheaper than GPT-5.5 and 17x cheaper than Claude Opus 4.7, while landing within 3-7 points on coding and reasoning benchmarks. The underrated detail is the cache-hit price, which can cut input cost ~88% for agents with stable prefixes. Teams should re-run their build math and route the easy majority of traffic to V4-Pro.

Jun 1, 2026 · 5 min read
AI News

Claude Opus 4.8: Anthropic's Honest, Parallel-Agent Flagship

Anthropic released Claude Opus 4.8 on May 28, 2026, 41 days after Opus 4.7. It scores 69.2% on SWE-Bench Pro, emphasizes calibrated honesty and longer autonomy, adds Dynamic Workflows for hundreds of parallel subagents, runs fast mode ~2.5x quicker, and holds pricing flat from 4.7.

May 30, 2026 · 4 min read
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