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This paper presents an empirical study on sentiment classifier behavior with sarcastic and AI-paraphrased social text, revealing lower confidence on sarcasm, higher accuracy on AI paraphrases, and an abstention method that improves performance by handling low-confidence inputs.
OpenRouter introduces Classifiers in beta, allowing users to tag and filter inference logs by custom dimensions without added latency.
Anthropic is redeploying Claude Fable 5 globally with updated classifiers to block cybersecurity tasks, though routine coding may trigger fallback to Opus.
AI agents can now build classifiers in minutes, replacing what previously required a large team of engineers and data scientists, as demonstrated by a Sentry error classifier generated at FactoryAI.
Abliteration launches a made-to-order synthetic training data workflow that generates negative, rare, and adversarial examples for classifiers, with schema, real-world facts, labels, provenance, and export to platforms like Hugging Face.