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Put 2–4 AI products side by side: rating, China availability, pricing tier, open source, self-hosting, capability tags, pros and cons.

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DoubaoiFlytek Spark

Compare AI products	Doubao Visit Site	iFlytek Spark Visit Site
Rating	9.1	8.9
Category	Chat models	Chat models
Vendor	ByteDance	iFlytek
Started	2023	2023
Region	China	China
China availability	Works in China	Works in China
Pricing tier	Free tier	Free tier
Current flagship	Doubao-pro / Seed 2.1	Spark X2 / V4
Open source	No	No
Self-hostable	No	No
Capability tags	VoiceStrong ChineseLow costMultimodal	VoiceStrong ChineseEnterprise ready
Latest release	Aug 2026 · Seed 2.1	Nov 2025 · Spark X2
Strengths	ByteDance product with massive daily users, ultra-fast responses and free tier Hyper-natural voice chat; Volcengine API has major pricing advantages	Elite speech recognition/synthesis, deeply fused with transcription, interpretation and education hardware Mature government, enterprise and education deployments with strong on-prem and localization support
Caveats	Reasoning ceiling on Olympic math and complex architectures is slightly below top tier	General chat and coding trail frontier models; consumer mindshare has eroded Slower flagship cadence, with innovation concentrated in vertical editions

Timelines are compiled from public sources and may lag. Check official sites, pricing, and changelogs before you buy or integrate. Not investment advice.