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Seed-1.8

Bytedance Seed 1.8 features stronger multimodal understanding and agent capabilities.

text + image → text · made by ByteDance

$0.12→$0.3per Mtok in / out
ByteDance · 5 sellers

Sold by 6 ways

SellerLaneRate
ByteDance apibatch$0.06per Mtok in$0.15per Mtok out$0.024per Mtok cachedvolcengine.com · read 2026-08-25
ByteDance apistandard$0.12per Mtok in$0.3per Mtok out$0.024per Mtok cachedvolcengine.com · read 2026-08-25
AtlasCloud aggregatorstandard$0.25per Mtok in$2per Mtok out$0.05per Mtok cachedapi.atlascloud.ai · read 2026-09-20
DeepInfra aggregatorstandard$0.25per Mtok in$2per Mtok outapi.deepinfra.com · read 2026-08-25
Requesty aggregatordeepinfra$0.25per Mtok in$2per Mtok out$0.05per Mtok cachedrouter.requesty.ai · read 2026-08-28
Vercel AI Gateway aggregatorstandard$0.25per Mtok in$2per Mtok out$0.05per Mtok cachedai-gateway.vercel.sh · read 2026-08-25

About

Seed-1.8 — a text model from ByteDance, sold by 5 companies from $0.12 in and $0.3 out per million tokens.

It takes text and images and returns text, with a context window of 262,144 tokens. It was published in September 2025, trained on material up to October 2024. Its sellers say it can reason step by step and call a tool. The catalogue files it under chat. Five companies sell it. The cheapest is $0.12 in and $0.3 out per million tokens at ByteDance. Beside the standard rate there are batch and separately routed lanes.

Every current figure

Maker
ByteDance
Register
model
Takes
text + image
Returns
text
Context
262,144 tokens
Longest answer
256,000 tokens
Published
September 2025
Knowledge to
October 2024
Licence
not read
Sellers
5
Price
$0.12 in and $0.3 out per million tokens — ByteDance

Known as 4 names

bytedance/doubao-seed-1.8-251228doubao-seed-1-8-251228ByteDance/Seed-1.8deepinfra/ByteDance/Seed-1.8