Co-Founder @ArtificialAnlys | Message me to play 🎾 in SF

San Francisco
Joined January 2022
George Cameron retweeted
After 4 months of careful expert review, we release CritPt v2. GPT-6 Astra leads the way with 83.1% accuracy (average of 5). We made changes to 47 challenges in total, which breaks down to: - 5 corrections to mistakes in the problem statement (e.g., wrong number, self-contradictory constraints) - 19 revisions to address underspecification (e.g., missing conventions/constraints that gives ambiguity to final answers) - 16 grader fixes (e.g., grader unstable, error tolerant range too tight) without revision to the problem statement - 7 refinements even though no issues were found (e.g., rephrased to be less searchable, worded more rigorously) We also fixed some minor typos (spelling, grammar) which are unlikely to affect model performance. Here’s how we found the issues: - David Louapre @dlouapre from HuggingFace reported 10 issues across 8 challenges in June 2026. We accepted 8 issues and revised 8 challenges accordingly. We also thank David’s helpful revision suggestions. - Anthropic sent a list of ~65 issues across 31 challenges in Aug 2026. Upon careful review of the full list, we accepted ~28 issues and revised 19 challenges accordingly (two overlapping with David’s list). - We conducted an internal expert review of all problems, including newly revised ones, involving cross checking full responses of GPT-6 Astra (max) with CritPt experts. We ended up fixing/refining 20 additional problems. From 28.9% in Nov 2025 (GPT-5 high, coding tool) to 83.1% now (GPT-6 Astra max, coding tool), the progress AI has made on well-posed physics problems is remarkable in a year. CritPt consists of entry-level research problems for junior researchers: the kinds of warm-up exercises a hands-on advisor might pose for a fresh grad student, but still demand solid physics training and nontrivial physical reasoning. In this sense, frontier models are crossing a “critical point”, but there’s a lot more beyond this transitioning point in real scientific discovery. Asking a good question can be much harder than solving one. A good question can be fundamentally ambiguous and constantly changing as we explore. And ultimately, decisive tests of physics require experiments. There is so much more to explore. We sincerely thank our evaluation partner @ArtificialAnlys, who will co-host the leaderboard of CritPt v2 soon! CritPt Website: critpt.com/ GitHub: github.com/CritPt-Benchmark/… HuggingFace: huggingface.co/datasets/Crit…
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Artificial Analysis has focused on speed and cost from day 1. If a task is already intelligence saturated, come to Artificial Analysis to work out how to get it done the fastest and cheapest
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DeepSeek is fast. Exciting they open sourced their inference framework today
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Regarding neocloud financials, people don’t realize that if there are chip shortages and limits on datacenters being built then this can be good for many of the debt holders while simultaneously bad for equity holders. Debt holders need to make sure they get their money back and high prices support this while equity holders want growth
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Welcome to the era of embodied AI. We are launching AA-Robotics v0.1, our research preview that measures frontier language model performance on understanding, planning, and acting in the physical world. In v0.1, each model is given control of a 6-axis robot arm (5 joints and a gripper) and a simple objective. We’re releasing results for our first eight tasks today. We find that frontier language models in coding agent harnesses have recently become capable of directly manipulating robot arms for simple tasks. Today, they are far too slow and expensive for any kind of production usage - nearly two orders of magnitude worse than human baselines. We expect this to change quickly. GPT-6 Astra places first in AA-Robotics v0.1, followed by GPT-6.1 Sol, Gemini 4 Argon and Claude Opus 5.5. AA-Robotics v0.1 details: ➤ Our first eight tasks test a range of capabilities: control and dexterity (precise grasping and object handling), spatial reasoning (how objects interact with one another) and adaptability (how models respond to the unexpected) ➤ Models get only brief instructions: how to connect to the robot arm (via a simple HTTP API), the arm's name and how to submit an attempt. They can view the scene through four cameras and write and run code to plan and send movements ➤ Once a model submits an attempt, its end state is graded against the task's pass criteria. A pass scores 100; an incomplete attempt earns partial credit. All attempts are zero-shot Key findings: ➤ The GPT family tops the leaderboard: GPT-6 Astra scores 69, ahead of GPT-6.1 Sol at 65 and Gemini 4 Argon at 55. Claude Opus 5.5 (49) and Claude Fable 5.1 (46) trail ➤ Today’s models are incredibly slow at our tasks, taking ~30 minutes on average to complete each tabletop task ➤ Cost varies widely: GPT-6.1 Sol is the cheapest at $1.93 per task on average; GPT-6 Astra, the most expensive, costs $16.36, more than eight times as much ➤ Compared with a human, today's best-performing frontier language models are ~100x slower and ~10x more expensive More results, clips, and how AA-Robotics v0.1 works follow in the thread below.
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Announcing Artificial Analysis for Government: benchmarking, advisory and data to help public sector clients design AI policy and select AI technologies Our services help public sector clients to: ➤ Design AI policy and support decision-making: Our benchmarking and expertise can inform the urgent decisions governments must make in navigating AI - for example, how to secure critical infrastructure, safeguard employment and growth, and balance national priorities including innovation, competition, and security. We recently signed an MOU with the Korean Government as an independent evaluator supporting Korea’s efforts to develop globally competitive frontier AI models and strengthen its domestic AI ecosystem. ➤ Select AI Technologies: We are the go-to resource for millions of users navigating AI. We can support governments to deploy the most effective agents at the lowest cost, empower public sector workers, and plan for future use cases. Our topic expertise includes: ➤ Capability, cost and performance: We are the global standard in measuring capabilities, accuracy, hallucination, cost, speed and latency of models and agents. Our benchmarking is widely referenced by top AI labs and news outlets. ➤ Cybersecurity and safety: The Artificial Analysis Cyber Index Alliance brings together partners including NVIDIA, IBM, Vercel and Collinear to set a new standard for evaluating AI cyber defense. This launched alongside the Artificial Analysis Cyber Index, which evaluates how well agents find and fix vulnerabilities. On safety, we evaluate models on a broad spectrum of harms across escalating levels of adversarial pressure. We recently partnered with NVIDIA to benchmark guardrail models for safety and refusal. Get in touch at the link below
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Introducing the Artificial Analysis Decision Index, benchmarking decision models across classification, tool calling, knowledge and reasoning. Jev leads among decision models; language models such as Claude Haiku 5.5 still deliver higher accuracy, but at much higher cost and latency Decision models deliver structured answers or classifications with associated probabilities, offering faster responses and lower costs than using language models. The Artificial Analysis Decision Index v1.0 compares the capability, cost, and speed of decision models and also compares to language models. Benchmarks in the Artificial Analysis Decision Index v1.0: ➤ AA-Omniscience-Decision: A private dataset of 500 questions adapted from the proprietary AA-Omniscience benchmark, measuring decision models’ knowledge and tendency to hallucinate ➤ HLE-MultiChoice: 513 text-only multiple-choice questions from Humanity’s Last Exam, testing decision models’ reasoning capabilities ➤ When2Call: A tool-calling benchmark from NVIDIA, testing whether models can correctly decide to call a tool, request clarification, decline to answer, or respond directly, evaluating capabilities relevant to agentic workflows and tool routing ➤ WildGuardTest: A safety benchmark evaluating models’ classification capabilities across harmful user requests, assistant refusals, and harmful responses. We use a subset of 835 of the original 1,725 test rows where all three human annotators agreed on all three labels, after excluding questions that consistently trigger model refusals Key results: ➤ Jev 1.13 leads the Decision Index, and sits on the Capability vs. Cost Pareto frontier: Jev 1.13 from @typesafeai scores 58 on the Artificial Analysis Decision Index, ahead of GLiDE (54) from @fastinoAI and Microsoft-Decision-1 (54) from @Microsoft. Decider v1.1 27B from @perplexity_ai has the lowest Cost per 1M Tasks at $17, with Microsoft-Decision-1 ($31) and Jev 1.13 ($42) also on the Capability vs. Cost Pareto frontier. Celeris-1 Decision has the fastest Time per Task at 0.06 seconds, more than 2x faster than Jev 1.13 (0.13 seconds per task) ➤ Decision models are poorly calibrated on knowledge and reasoning tasks: Across almost all probability levels for chosen answers, accuracy falls below that probability for all decision models. This gap is largest on AA-Omniscience-Decision and HLE-MultiChoice, while most models are relatively well-calibrated on WildGuardTest (classification) and When2Call (tool calling) ➤ Decision models offer significant speed and cost advantages over language models, but trail on knowledge and reasoning: On classification and tool-calling tasks, leading decision models perform comparably to language models while being significantly faster and cheaper. However, language models substantially outperform on knowledge and reasoning. Claude Haiku 5.5 (Low) scores 61 on the Decision Index, 3 points ahead of Jev 1.13, but takes 1.4 seconds per task vs. 0.13 seconds (11x slower) and costs $184 per 1M Tasks vs. $42 for Jev 1.13 (4.4x more expensive) We will continue to develop the Artificial Analysis Decision Index to help developers and companies better understand when and how to use decision models.
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George Cameron retweeted
“Do you think that getting married young has made you less ambitious?” Welcome to the first episode of SOTA Wives with Sarah Chieng (Head of DevX at Cerebras, ⁠@MilksandMatcha⁠) x Vivian Midha Shen (General Partner at Y Combinator, ⁠@vivianmshen⁠). In episode 1: finding your person before getting rich, turning down startup funding to finish MIT, what a YC partner sees in founders, and how a birthday post became “psychological violence.” 4:08 Finding your husband before the exit 8:48 Did we marry away our ambition? 18:04 The internet called Sarah's birthday “psychological violence” 20:47 Does your YC partner secretly think you’re doomed? 23:47 Building a startup with your ex-boyfriend 28:54 SF cat parties
WTF is a SOTA Wife? SOTA Wives is a podcast exploring the unfiltered side of Silicon Valley. We built it as an antidote to the performative polish of tech Twitter. Brought to you by @MilksandMatcha x @vivianmshen. Episode 1 goes live on Monday, 12th October at 9 AM PT on everywhere you get your podcasts 💙
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We have measured intelligence. Now it's time to see it. We are launching AA-3D, our new benchmark for how well AI models build interactive 3D scenes. Each model works as an agent in an offline sandbox and turns a written brief into a three.js web page. A human panel of judges compares pairs of scenes built from the same brief without knowing which model made which. AA-3D details: ➤ 55 written briefs across seven domains, including landmarks, machines, living bodies, games, and space. Each brief says what the scene must show and how people should interact with it, and leaves the rest to the model ➤ Each model gets up to three hours and 250 turns. Its sandbox has Blender, Rapier physics, Python, a headless browser to test its own work, and a CC0 library of materials, 3D models, and characters ➤ Panelists spend at least 30 seconds with each scene before they vote. One comparison in every four is a validation check ➤ Over 10,000 counted votes from over 1,000 panelists rank 21 models by Elo, with 95% confidence intervals Key findings: ➤ Four models are statistically tied at the top: Claude Sonnet 5.5 (1194), Claude Opus 5.5 (1190), GPT-6 Astra (1165), and Claude Fable 5.1 (1131). The 95% confidence intervals of the other three overlap Claude Sonnet 5.5's ➤ AA-3D Elo rises with intelligence: each point on the Artificial Analysis Intelligence Index is worth about 18 Elo (Pearson 0.92) ➤ The best-placed open weights models, Kimi K3 (982) and MiMo-V2.6-Pro (977), rank 11th and 12th, more than 200 points behind first place ➤ A scene costs $0.20 to $32.08, depending on the model. The cheapest, GPT-6 Luna, ranks eighth More results, more scenes, and how AA-3D works follow in the thread below.
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Can today's frontier language models control a real robot arm, zero-shot, with no coaching? AA-Robotics v0.1 coming soon.
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Is sf back?
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Google’s new Gemini 4 Argon equals GPT-6 Astra on the Artificial Analysis Intelligence Index at 60% of the Cost per Task with discounted prices. Google is now back to being one of the top three labs in intelligence achieved Gemini 4 Argon is @GoogleDeepMind’s first proprietary model above the Flash class in over 7 months. With high reasoning (the highest available), it scores 53 on the Artificial Analysis Intelligence Index, matching GPT-6 Astra (max, 53) and 1 point ahead of GPT-6.1 Sol (max, 52), with gains driven by lower hallucinations and stronger agentic capabilities. At its current 50% pricing discount and with cache discounts increased to 95%, Gemini 4 Argon costs $1.99 per Intelligence Index task, 60% of GPT-6 Astra (max), but 2.7x GPT-6.1 Sol (max). After the discount ends, this will rise to $3.98 (~1.2x GPT-6 Astra (max)). Gemini 4 Argon is currently being rolled out to selected users and is not publicly available. The 50% discount is an initial promotion. Google has not yet confirmed the promotion end date Key benchmarking results for Gemini 4 Argon with high reasoning: ➤ Google returns as one of the top three labs on intelligence: Gemini 4 Argon (high) scores 53 on the Artificial Analysis Intelligence Index, matching GPT-6 Astra (max, 53) and 1 point ahead of GPT-6.1 Sol (max, 52). This is 23 points above Google’s previous non-Flash model, Gemini 3.1 Pro Preview (30) and 12 points ahead of Gemini 3.8 Flash (high) ➤ Launch discounts of 50% make Gemini 4 Argon competitive on Cost per Task: At current discounted pricing, Gemini 4 Argon (high) costs $1.99 per Intelligence Index task, 60% of GPT-6 Astra (max, $3.26) for a comparable level of intelligence. This cost efficiency is driven by lower token prices, rather than reduced token use, with Gemini 4 Argon averaging 62k output tokens per task, compared with 27k for GPT-6 Astra (max). Google has not yet confirmed the promotion end date, but on standard pricing, Cost per Task will increase to $3.98 ➤ Stronger agentic performance: Historically a weaker area for Gemini models, Gemini 4 Argon shows improvements across agentic evaluations. It ranks #1 on AutomationBench-AA at 77.5%, 6 points ahead of Claude Sonnet 5.5 (max, 71.3%). On Terminal Bench 4, Gemini 4 Argon achieves 57%, a +53 point improvement from Gemini 3.1 Pro Preview, only behind Claude Sonnet 5.5 (max, 64%), Claude Opus 5.5 (max, 60%) and GPT-6 Astra (59%). On AA-Briefcase, it reaches 1494 Elo. This is driven by a 65% rubric pass rate, the highest we have recorded, but lower Analytical Quality (1576 Elo) and Presentation Quality (1308 Elo) ➤ Lowest hallucination rate among leading models: On AA-Omniscience, Gemini 4 Argon has a 15% hallucination rate, the lowest of any model scoring 45+ on the Intelligence Index, compared with 51% for GPT-6 Astra (max) and 54% for GPT-6.1 Sol (max). This means Argon is much more likely to acknowledge when it does not know an answer rather than guess incorrectly. On accuracy, Gemini 4 Argon scores 50%, a 5 point decrease from Gemini 3.1 Pro Preview, and 13 points below GPT-6 Astra (max, 63%). With this slightly lower accuracy, its overall AA-Omniscience score of 42 remains in line with GPT-6 Astra (43) and GPT-6.1 Sol (42) Key model details: ➤ Context Window: 1M tokens ➤ Multimodality: Text, image, video, and speech input, with text output ➤ Pricing: $4/$20 per 1M input/output tokens at standard pricing, currently discounted 50% to $2/$10. Cached input tokens receive a 95% discount ($0.10 per 1M at discounted pricing), up from 90% on Gemini 3.8 Flash ➤ Long Decode Continuation: We tested Gemini 4 Argon with Long Decode Continuation, a new Gemini API feature that pauses long responses and resumes them across follow-up calls. This lets reasoning run up to 1M output tokens without request timeouts
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OpenAI got computer use to actually work with GPT-6 Astra just in time for taxes to be due. Well done 👏
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Safety refusal reporting is now available in the Artificial Analysis Coding Agent Index In our latest Coding Agent Index v1.5, we’ve introduced safety refusal reporting to help explain model behavior and score differences. A safety refusal occurs when a provider or model declines to start or continue a task on safety grounds. An agent may fall back to another model to continue, or stop the attempt with a block. Claude Fable 5.1 had the highest fallback rates in both Claude Code and Devin Fusion, with fallback attempts accounting for 8.8% and 7.1% of the Index's weight, respectively; these results therefore include the fallback models' performance. Refusal variability, harness context buildup, effort settings, and retry strategies can all affect the observed rates.
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Independent evaluation of AI models, across both capability and safety, is essential. We welcome Dario’s call to give independent evaluators greater access to frontier AI models. For nearly three years, Artificial Analysis has been building benchmarks and infrastructure to independently measure AI capabilities. We have supported pre-launch benchmarking of frontier models with almost every major AI lab. We are continuing to see jumps in capability across every dimension we measure. The world needs a vibrant ecosystem of independent AI evaluators. We are going to keep working to build it!
We Must Pace the Frontier: I’ve written a new essay on why the AI industry should slow down, with a three-part plan for doing so. Anthropic is unilaterally committing to the first of these steps. We’ll provide third-party evaluators with permanent, employee-level access to our systems, so that they can verify adherence to our safety measures, report on incidents, and assess models’ alignment during training. You can read the full post here: darioamodei.com/post/we-must…
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Last week the Intelligence Index vs Cost Pareto frontier moved out substantially. Claude Fable 5.1, Muse Spark 1.3, and GPT-6 Astra each set a new point in efficient intelligence Link to analysis: artificialanalysis.ai/#intel…
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