Doubao-Seed-1.6
ByteDance's multimodal flagship with 256K context and aggressive API pricing
About
Doubao-Seed-1.6 is ByteDance's general-purpose multimodal model family, served through Volcano Engine. It takes text, images, and video with a 256K context window and ships in full, thinking, and flash tiers, plus a vision-focused variant. The thinking tier adds adaptive reasoning depth. ByteDance's main selling point is price: the flash tier runs about $0.022 per million input tokens, roughly an order of magnitude under Western frontier APIs, which makes it attractive for high-volume pipelines. Tool calling arrived with the 1.6-Vision release, enabling image operations like crop and annotate inside agentic workflows. Weights are not open; access is API-only through Volcano Engine's Ark platform with an OpenAI-compatible endpoint. Independent benchmark comparisons against Claude, GPT, and Gemini with comparable rigor are scarce, so ByteDance's performance claims should be treated as vendor-stated. The model family powers the Doubao consumer app, which is one of China's most-used AI assistants.
Specs
Context window
Pricing
Free quota
API access
Weights
Released
Benchmarks
Vendor-stated; independent cross-vendor comparisons not published with comparable rigor
Provider-reported unless a source says otherwise. Benchmarks are marketing-adjacent by nature — treat them as directional.
Use cases
Trust score — 7/10
Scored 7/10 (metrics tier, metrics-v1). Evidence: 256K context and tier structure verified via model registries; Pricing from third-party API trackers, flagged as such; Performance claims vendor-stated with no independent cross-vendor benchmarks; noted.