Mistral AI releases Shieldstral 1.0, a 3B multimodal safety classifier under Apache 2.0
Shieldstral judges text or images against a policy you write and returns an unsafe score. Reported best F1 on several benchmarks; Apache-2.0.
Tagged classifier
NVIDIA releases Nemotron 3.5 Content Safety, a 4B multilingual moderation classifier
Gemma-3-4B-based, 12 languages, text plus one image, with custom-policy mode. Open licence plus Gemma terms; card dated 2 June 2026.
NVIDIA releases Nemotron 3 Content Safety, a 4B moderation classifier on Gemma-3
Predecessor to 3.5: 4B, 12 languages, 23 safety categories. Released 16 March 2026 under the NVIDIA open model licence plus Gemma terms.
Qwen releases Qwen3Guard, multilingual moderation models in 0.6B, 4B and 8B
Apache-2.0 safety classifiers covering 119 languages with Safe, Controversial and Unsafe levels; Stream variants are also on the Hub.
Katanemo releases Arch-Router 1.5B, a router that follows your own route descriptions
For context: a Qwen2.5-1.5B-based model that maps a query to a user-defined route and returns JSON. Released under the Katanemo licence.
Meta releases Llama Guard 4, a 12B multimodal safety classifier
For context: a dense 12B pruned from Llama 4 Scout that screens prompts and responses across 14 MLCommons hazard categories. Gated under the Llama 4 licence.