Seed 1.8

Updated Oct 4, 2026

seed256k context256k max outputreleased Dec 28, 2025ReasoningTool calling

As of Oct 4, 2026, the cheapest Seed 1.8 API price is $0.1187 per 1M input tokens (Volcengine Ark) and $0.29 per 1M output tokens (Ofox). Seed 1.8 is offered by 4 providers in the seed family, reasoning enabled.

Cheapest input

$0.1187

Volcengine Ark

Cheapest output

$0.29

Ofox

Official

—

output per 1M tokens

Providers

offering this model

Spread

6.9×

max / min output

API pricing by provider

Metered per-token prices. Cheapest input and output are highlighted; † marks a context-tier surcharge. How prices are ranked.

Seed 1.8 API prices by provider in USD per 1M tokens, updated Oct 4, 2026
Provider	1M input	1M output	1M cache read	1M cache write	Context
Ofox	$0.12	Cheapest$0.29	$0.023	—	256k
Volcengine Ark	Cheapest^†$0.1187	$1.1875	$0.0238	—	256k
Requesty	$0.25	$2	$0.05	—	256k
Vercel AI Gateway	^†$0.25	$2	$0.05	—	256k

Seed 1.8 pricing FAQ

What is the cheapest Seed 1.8 API?

As of Oct 4, 2026, Ofox has the lowest Seed 1.8 output price at $0.29 per 1M tokens, and Volcengine Ark has the lowest input price at $0.1187 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.

How many providers offer Seed 1.8?

4 providers list Seed 1.8 on Sovyron; 4 of them sell it at a metered per-token price.

Is Seed 1.8 free?

No provider in the Sovyron catalog lists a free tier for Seed 1.8.

What is the context window of Seed 1.8?

Seed 1.8 supports a 256k-token context window and up to 256k output tokens.