# Tagged guard-model

> Announcements and real-world deployments of AI, checked against their sources and scored: open-weights releases, decision models in the wild, and what is actually in use.

- [AccuKnox Inc. releases Guard 1.1, an Apache-2.0 guardrail for agent inputs and prompt injection](https://shipped.anth.us/decisions/accuknox-guard-1-1/index.md): A 4.5B guard fine-tuned from a Qwen3.5-4B base that returns a block probability. The card reports 0.802 on a 27,416-item safety set. (2026-10-16)
- [AI Singapore releases Gemma-SEA-LION-Guard v2, MIT-licensed safety models for Southeast Asian languages](https://shipped.anth.us/decisions/aisingapore-sea-lion-guard-v2/index.md): A 31B decision model (plus E4B and E2B) for content moderation and action governance across eight languages. Scores AUPRC 93.5 on general safety. (2026-10-11)
- [Mistral AI releases Shieldstral 1.0, a 3B multimodal safety classifier under Apache 2.0](https://shipped.anth.us/decisions/mistral-shieldstral-1-0-3b/index.md): Shieldstral judges text or images against a policy you write and returns an unsafe score. Reported best F1 on several benchmarks; Apache-2.0. (2026-07-16)
- [NVIDIA releases Nemotron 3.5 Content Safety, a 4B multilingual moderation classifier](https://shipped.anth.us/decisions/nvidia-nemotron-3-5-content-safety/index.md): Gemma-3-4B-based, 12 languages, text plus one image, with custom-policy mode. Open licence plus Gemma terms; card dated 2 June 2026. (2026-06-02)
- [IBM releases Granite Guardian 4.1 8B, a judge model for safety, RAG and agent checks](https://shipped.anth.us/decisions/ibm-granite-guardian-4-1-8b/index.md): Apache-2.0 judge on Granite 4.1 8B with a hybrid reasoning mode. Covers harm, groundedness and function-calling hallucination, plus custom criteria. (2026-04-16)
- [NVIDIA releases Nemotron 3 Content Safety, a 4B moderation classifier on Gemma-3](https://shipped.anth.us/decisions/nvidia-nemotron-3-content-safety/index.md): Predecessor to 3.5: 4B, 12 languages, 23 safety categories. Released 16 March 2026 under the NVIDIA open model licence plus Gemma terms. (2026-03-16)
- [OpenAI releases gpt-oss-safeguard, open-weight safety reasoning models that read your policy](https://shipped.anth.us/decisions/openai-gpt-oss-safeguard/index.md): 20b and 120b Apache-2.0 models that classify text against a policy you supply at inference time, with configurable reasoning effort. (2025-10-29)
- [Qwen releases Qwen3Guard, multilingual moderation models in 0.6B, 4B and 8B](https://shipped.anth.us/decisions/qwen-qwen3guard/index.md): Apache-2.0 safety classifiers covering 119 languages with Safe, Controversial and Unsafe levels; Stream variants are also on the Hub. (2025-09-23)
- [Meta releases Llama Guard 4, a 12B multimodal safety classifier](https://shipped.anth.us/decisions/meta-llama-guard-4-12b/index.md): 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. (2025-04-23)