{"rewrite":{"id":"r_4d46356be83baaa07002305a","clusterId":"c_ecd54ccd2d5b80f1a661784e","slug":"prismml-releases-ternary-bonsai-2-models-for-phones","model":"deepseek-v4-1-flash","headline":"PrismML Releases Ternary Bonsai 2 Models for Phones","summary":"PrismML released Ternary Bonsai 2 2B, 4B, and 9B on October 15, 2026. The models are ternary versions of the Qwen3.5 base models, using the values -1, 0, and 1, with memory use of 0.43GB, 0.95GB, and 2GB. Ternary Bonsai 2 2B runs at 120 tokens per second on the iPhone 18 Pro Max, and the Locally AI app supports them.","whyItMatters":"PrismML is pushing the same quantization method it used on a 27B model down to phone-sized weights, where the 0.43GB footprint and the iPhone throughput numbers are what make a local assistant plausible.","webCardHtml":"\u003cp\u003eThe models are ternary versions of Qwen3.5 2B, 4B, and 9B, each modified to process using three values: -1, 0, and 1. Memory use stays under one-ninth of the base models, and PrismML says performance degradation from the base is suppressed, with some tests scoring above the base.\u003c/p\u003e\u003cp\u003eA demo shows Ternary Bonsai 2 9B handling agent tasks on an iPhone 18 Pro Max. The free app Locally AI already supports all three, and Adrien Grondin, its developer, posted a video of the 2B model running on an iPhone 18 Pro.\u003c/p\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003eTernary Bonsai 2 2B\u003c/strong\u003e: Based on Qwen3.5 2B, 0.43GB, 120 tokens per second on iPhone 18 Pro Max\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eTernary Bonsai 2 4B\u003c/strong\u003e: Based on Qwen3.5 4B, 0.95GB\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eTernary Bonsai 2 9B\u003c/strong\u003e: Based on Qwen3.5 9B, 2GB, demoed on iPhone 18 Pro Max handling agent tasks\u003c/li\u003e\u003c/ul\u003e","blueskyPost":"PrismML's Ternary Bonsai 2 2B holds to 0.43GB, so the phone's RAM budget, not the model's parameter count, becomes the constraint on what runs locally.","twitterPost":"At 0.43GB, Ternary Bonsai 2 2B makes RAM, not parameter count, the binding constraint on local phone inference.","threadsPost":"Ternary Bonsai 2 2B fits in 0.43GB, and the 9B in 2GB. PrismML built the series around memory first, so the ceiling on what runs on a phone moves from chip speed to RAM headroom.","newsletterBlurb":"PrismML released Ternary Bonsai 2 2B, 4B, and 9B on October 15, 2026, ternary versions of the Qwen3.5 base models that use the values -1, 0, and 1. Memory use is 0.43GB, 0.95GB, and 2GB. Ternary Bonsai 2 2B runs at 120 tokens per second on the iPhone 18 Pro Max, and the free app Locally AI supports all three.","attributionJson":"[{\"source\":\"GIGAZINE\",\"url\":\"https://gigazine.net/news/20261016-ternary-bonsai-2-2b-4b-9b/\",\"title\":\"AI series 'Ternary Bonsai 2' runs on smartphones with just 0.43GB, achieving 120 tokens per second on iPhone 18 Pro Max\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4911,"outputTokens":901,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1792118239,"createdAt":"2026-10-16T02:33:13.000Z","publishedAt":"2026-10-16T02:36:09.000Z","updatedAt":"2026-10-16T02:36:09.000Z"},"cluster":{"id":"c_ecd54ccd2d5b80f1a661784e","canonicalTitle":"わずか0.43GBでスマホ動作可能なAI「Ternary Bonsai 2」シリーズがオープンモデルとして登場、iPhone 18 Pro Maxで毎秒120トークンの高速処理が可能","representativeArticleId":"a_66fba288ccf8ec2c0769144a","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"Ternary Bonsai 2\"],\"studios\":[\"PrismML\"],\"people\":[],\"type\":\"announcement\",\"domain\":\"other\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-10-16T01:35:00.000Z","lastSeenAt":"2026-10-16T01:35:00.000Z","updatedAt":"2026-10-16T02:36:07.000Z"},"attribution":[{"source":"GIGAZINE","url":"https://gigazine.net/news/20261016-ternary-bonsai-2-2b-4b-9b/","title":"わずか0.43GBでスマホ動作可能なAI「Ternary Bonsai 2」シリーズがオープンモデルとして登場、iPhone 18 Pro Maxで毎秒120トークンの高速処理が可能"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["Ternary Bonsai 2"],"studios":["PrismML"],"people":[],"type":"announcement","domain":"other","is_roundup":false},"keyFacts":null}