{"type":"post","id":"arcjet-launches-himalia-1-custom-prompt-injection-security-1f5adc","slug":"arcjet-launches-himalia-1-custom-prompt-injection-security-1f5adc","title":"Arcjet launches Himalia 1 custom prompt-injection security models","description":"Arcjet announced Himalia 1, a custom prompt-injection classifier that now powers its detector on SDK calls where that protection is enabled.","retrieval_nugget":"Arcjet announced Himalia 1, a custom prompt-injection classifier that now powers its detector on SDK calls where that protection is enabled. It also opened early access to specialist models for coding and autonomous security agents. The launch makes runtime input screening more specific to agent contexts, but the published performance figures are Arcjet’s own claims.","published_at":"2026-11-05","updated_at":"2026-11-05","record_date":"2026-11-05","date_kind":"published_at","topics":["models"],"entities":["Arcjet","Himalia 1","Thebe 1","Carme 1","Qwen3-0.6B"],"related_patterns":["agent-security-moves-to-runtime-boundaries"],"novelty_label":"new_fact","what_changed":"Arcjet introduces Himalia 1 custom prompt-injection security models, a new product release distinct from the prior defense research and agent-security launch.","prior_refs":["https://newruntime.com/posts/heads-of-security-learned-per-head-attention-gates-f68641/","https://newruntime.com/posts/cyberhaven-launches-agentic-data-security-for-ai-apps-466873/"],"source_url":"https://arcjet.com/blog/introducing-arcjets-custom-ai-security-models","source_urls":["https://arcjet.com/blog/introducing-arcjets-custom-ai-security-models"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:arcjet-launches-himalia-1-custom-prompt-injection-security-1f5adc","status":"published","visuals":[],"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/arcjet-launches-himalia-1-custom-prompt-injection-security-1f5adc/","markdown":"https://newruntime.com/posts/arcjet-launches-himalia-1-custom-prompt-injection-security-1f5adc.md","json":"https://newruntime.com/posts/arcjet-launches-himalia-1-custom-prompt-injection-security-1f5adc.json"},"markdown_url":"https://newruntime.com/posts/arcjet-launches-himalia-1-custom-prompt-injection-security-1f5adc.md","next_reads":[{"type":"topic","path":"/topics/models/","url":"https://newruntime.com/topics/models/","title":"Models","reason":"Explore the models topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/models.md","json_url":"https://newruntime.com/topics/models.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/sources/","url":"https://newruntime.com/sources/","title":"Sources","reason":"See the original sources this archive cites.","media_type":"text/html"}]}