{"id":"simba-3-5-speechify","slug":"simba-3-5-speechify","name":"Simba 3.5","orgId":"speechify","family":"simba-3-5-speechify","releaseDate":null,"availability":"announced","openWeights":false,"license":null,"paramsTotal":null,"paramsSource":null,"contextWindow":null,"knowledgeCutoff":null,"modelCardUrl":"https://speechify.ai/launch/simba-3-5","hfRepo":null,"modalities":["audio"],"aliases":["Simba 3.5","simba 3.5","simba-3.5","speechify simba 3.5","speechify simba-3.5","speechifyai simba 3.5"],"aliasNote":null,"origin":"tracked","tracked":{"trackedSince":"2026-10-21","announced":"2026-10-21","blurb":"Speechify's text-to-speech model that speaks 48 languages under a single model id, with every catalog voice and cloned voices usable in any of them. Available in the Speechify API on every plan, with streaming, WebSocket and word timestamps. No open weights.","api":"live","apiModelId":"simba-3.5","openWeights":"no","facts":[{"label":"Task","value":"Text-to-speech, 48 languages in one model (up from 6 in Simba 3.0 Multilingual)"},{"label":"Voices","value":"Every voice in the catalog speaks all 48 languages, cloned voices included; a voice keeps the accent of the recording it was made from"},{"label":"Output","value":"24 kHz audio; speech, streaming and WebSocket endpoints with word timing marks; SSML pauses and speaking rate"},{"label":"Price","value":"$10 per 1M characters at launch on the Starter plan (list $20), until Nov 21, 2026"},{"label":"Status","value":"Speechify's recommended model from Oct 21, 2026; Simba 3.2 (streaming English) and Simba 3.0 remain available"}],"claims":["Lab claim: listeners preferred Simba 3.5 over Simba 3.2 in 63% of blind English comparisons (95% CI 60–67%), and over Simba 3.0 Multilingual in 62% across six locales (95% CI 56–67%).","Lab claim: 1.8× Simba 3.2's speech throughput per serving instance and 72 ms time to first audio at the 95th percentile under production load."],"sources":[{"kind":"lab","title":"Simba 3.5 launch page (Speechify)","url":"https://speechify.ai/launch/simba-3-5","date":"2026-10-21"},{"kind":"lab","title":"Simba 3.5 fact sheet (PDF)","url":"https://speechify.ai/reports/simba-3-5-fact-sheet.pdf","date":"2026-10-21"},{"kind":"lab","title":"SpeechifyAI announcement on X","url":"https://x.com/SpeechifyAI/status/2112892450234589517","date":"2026-10-21"}],"firstBenchmark":null},"organization":{"id":"speechify","name":"Speechify","slug":"speechify","country":null,"url":"https://speechify.ai/models","color":"#11110F","mark":"S"},"price":null,"answer":{"word":"Pending benchmarks.","scope":"Announced Oct 21, 2026; no independent results yet.","lead":"As of Oct 22, 2026, Simba 3.5 is pending benchmarks on isitsota: announced Oct 21, 2026, with no independent results on the boards we track yet.","confidence":"low"},"status":"PENDING_BENCHMARKS","verdicts":[]}