Research updates and other news from METR, a research nonprofit developing the science of autonomous AI evaluations.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
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| Issues | 101 | Founded | 2 years ago | Last Issue | 11 days ago |
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metr.substack.comLatest Issues
Funding update
In the last 6 months, METR raised commitments of around $71 million. This will fund ambitious projects: studying autonomous capabilities, tracking recursive self-improvement, evaluating monitoring systems, conducting risk assessments, inves...
How independent researchers could investigate AI propensities after misalignment incidents
AI agents sometimes autonomously take sophisticated, sustained actions in clear violation of user and developer intent. As an example, last week OpenAI reported that some of its internal frontier agents autonomously hacked into Hugging Face...
Expenditure Horizon: Measuring Optimization Ability, with an Application to NanoGPT
We propose a measure of an AI agent’s optimization ability with an “expenditure horizon.” We give an empirical illustration from the NanoGPT speedrun.
One difficulty in measuring AI’s ability to accelerate AI R&D is accounting for token co...
Summary of METR's predeployment evaluation of GPT-5.6 Sol
Note on independence: This evaluation was conducted under a standard NDA. Due to the sensitive information shared with METR as part of this evaluation, OpenAI’s comms and legal team required review and approval of this post.1
Summary
W...
Frontier Risk Report (February to March 2026)
Read the full report at metr.org/frontier-risk-report. This Substack post includes only the executive summary.
Assessment Window: Feb 16, 2026 – Mar 16, 2026
Redaction summary statement: Except where explicitly noted in the report, there...
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Authors
The writers behind this newsletter.
METR researches, develops and runs cutting-edge tests of AI capabilities, including broad autonomous capabilities and the ability of AI systems to conduct AI R&D.
Econ Phd @ MIT. Focused on AI.
METR researches, develops and runs cutting-edge tests of AI capabilities, including broad autonomous capabilities and the ability of AI systems to conduct AI R&D.
I'm currently trying to help figure out what on earth is going on with AI capabilities at METR.
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