Jonathan Roberts (@JRobertsAI) header
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Evals @MistralAI | Previously, PhD @Cambridge_Uni

Cambridge
Joined December 2022
Photo by Jonathan Roberts (@JRobertsAI)Photo by Jonathan Roberts (@JRobertsAI)Photo by Jonathan Roberts (@JRobertsAI)Photo by Jonathan Roberts (@JRobertsAI)Photo by Jonathan Roberts (@JRobertsAI)Photo by Jonathan Roberts (@JRobertsAI)Photo by Jonathan Roberts (@JRobertsAI)Photo by Jonathan Roberts (@JRobertsAI)Photo by Jonathan Roberts (@JRobertsAI)Photo by Jonathan Roberts (@JRobertsAI)
Is computer vision “solved”? Not yet Current models score 0% on ZeroBench 🧵1/6
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📢 Muse Spark Open w/tools scores 50% pass@5 on ZeroBench
1/ muse spark open is the most capable US open-weight model to date. 816B total params, 42B active. 1M-token context. natively multimodal. built for coding and agentic work like long-horizon tasks, hard software engineering, multi-step reasoning. america! 🇺🇲
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👀 DeepSeek-V4.1-Flash-1017 scores 51% pass@5 on ZeroBench w/ tools
🚀 DeepSeek-V4.1-Flash-1017 is here! Stronger benchmark performance, faster task completion, and shorter outputs than the previous version—a Pareto improvement in performance and cost. Now live on our website, app, and API. 🛠️ Optimized for @DeepSeekHarness, Tencent CodeBuddy, WorkBuddy, and more. Upgrade to DeepSeek Harness v0.2.1-rc.1 or later for the best experience with the new model. 1/4
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nothing to report opus 5.5 max looks on/above trend for the ai futures model (added to the eci graph from the august update) wide CIs yada yada
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Jonathan Roberts retweeted
Mistral Large 4 is one of the world's strongest AI models for cybersecurity.
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Jonathan Roberts retweeted
Meet Mistral Large 4, aka Le Chonk. • 1T parameters, natively multimodal. 49B active. It is the best open weights model from US or Europe on aggregated benchmarks. • State-of-the-art on critical workloads, including cyber defense, manufacturing and finance and it surpasses closed frontier models on visual grounding. • Forged in Europe end-to-end and is deployable from Europe via our own Mistral Cloud infrastructure. • Available to all via API today. Working with cybersecurity partners privately. Open weights release end of October.
🤖 Made with AI
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More details on the project page: zerobench.github.io/
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Opus 5.5 (max) is no.2 on ZeroBench 43% pass@5 25% pass^5 Now, 77% of questions have been solved at least once
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All three GPT-6 models sit on the ZeroBench performance-cost pareto frontier pass@5 | pass^5 GPT-6 Astra (max) 51% | 35% GPT-6 Sol (max) 41% | 17% GPT-6 Luna (max) 20% | 7%
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GPT-6 Astra (max) on ZeroBench: pass@5: 51% (prev. SOTA: 30%) pass^5: 35% (prev. SOTA: 13%) If this reflects a genuine capability improvement, it is a significant step forward in both performance and consistency
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Jonathan Roberts retweeted
Now let’s take a look at how Muse Spark 1.2 performs across visual reasoning, chart understanding, and knowledge-intensive tasks.
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Impressive! Muse Spark 1.2 w/ tools surpasses 50% pass@5 on ZeroBench!
Replying to @alexandr_wang
2/ muse spark 1.2 performs quite strongly across a wide variety of multimodal capabilities and evals.
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Grok 4.6 (xhigh) on ZeroBench (no tool use): pass@5 / pass^5 Grok 4.6: 17% / 7% GPT-5.6 Sol (SOTA): 30% / 13% More evaluation details available on the project page
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