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OpenAI Blog 6 months ago
OpenAI is accepting applications for Grove Cohort 2, a 5-week program providing founders with mentorship and resources to build AI products. Participants receive $50,000 in API credits, early access to new AI tools, and direct guidance from OpenAI staff. The program accepts applicants from pre-idea stage through those with existing products.
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TLDRocket
25 July 2026
The day's AI developments split between hardened defenses and hardware experiments. Anthropic claims Claude Opus 5, its latest flagship model, resists prompt injection attacks—the technique of sneaking malicious instructions into user inputs to bypass safety guardrails—better than any previous version. The company documented the improvement across its safety evals and red teaming reports, details now public in Opus 5's system card. This matters because prompt injection remains a real vulnerability in deployed AI systems; proving resistance to it is becoming table stakes for any model marketed to enterprises handling sensitive workflows.
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