Qwen3.8 Flash vs Seed 1.8: API price and specs

Qwen3.8 Flash is 11% cheaper than Seed 1.8 on input price.

Seed 1.8 is 10% cheaper than Qwen3.8 Flash on output price.

Qwen3.8 Flash is 4% cheaper than Seed 1.8 on a 1M-in / 200k-out workload.

Qwen3.8 Flash has a 309.6% larger context than Seed 1.8.

Field	Qwen3.8 Flash	Seed 1.8
Lowest input, per 1M	$0.0975	$0.11 +12.4%
Median input, per 1M	$0.15	$0.25 +66.7%
Lowest output, per 1M	$0.31 +11.5%	$0.27
Median output, per 1M	$0.47	$2.00 +325.5%
Lowest unit price	—	—
Cost of 1M in + 200k out	$0.16	$0.16 +3.6%
Context	1M	256K +75.6%
Max output	131K	131K
Providers	27	12 +55.6%
Regions	GLOBAL, US	US
Accepts	file, image, image/bmp, image/heic, image/jpeg, image/png, image/tiff, image/webp, pdf, text, video, video/mp4, video/quicktime, video/x-flv, video/x-matroska, video/x-ms-wmv, video/x-msvideo	audio, document, image, text, video
Returns	text	text
Type	Text models	Text models
Free option	no	no
Cheapest provider	edenai	aihubmix

Your own workload: how many tokens the model gets (input) and gives back (output) - for example, in a month. The "Cost" row of the table above is recalculated for these numbers, for each model.

Computed from current offers each time the page opens; the best value of a row is bold, the percent is how far behind the best.

Providers selling both

302ai, aihubmix, aiml, cometapi, deepinfra, edenai, fastrouter, ofox, requesty, trustedrouter, vercel, zenmux

Frequently asked questions

Which is cheaper, Qwen3.8 Flash or Seed 1.8?

Qwen3.8 Flash is 11% cheaper than Seed 1.8 on input price. Seed 1.8 is 10% cheaper than Qwen3.8 Flash on output price. Qwen3.8 Flash is 4% cheaper than Seed 1.8 on a 1M-in / 200k-out workload.

Which has the larger context, Qwen3.8 Flash or Seed 1.8?

Qwen3.8 Flash: 1M tokens; Seed 1.8: 256K tokens.

Where can I use both Qwen3.8 Flash and Seed 1.8?

302ai, aihubmix, aiml, cometapi, deepinfra, edenai, fastrouter, ofox, requesty, trustedrouter, vercel, zenmux