Is Seed 1.8 (251228) (ByteDance) or GLM-5.3 (reka-ai) cheaper?

Seed 1.8 (251228) (ByteDance) is cheaper on output tokens ($2.00 vs $3.96 per 1M).

Which has the larger context window, Seed 1.8 (251228) (ByteDance) or GLM-5.3 (reka-ai)?

GLM-5.3 (reka-ai) has the larger context window (1M tokens).

Seed 1.8 (251228) (ByteDance) vs GLM-5.3 (reka-ai)

Seed 1.8 (251228) (ByteDance) is cheaper on output tokens, while GLM-5.3 (reka-ai) offers a larger context window. Choose Seed 1.8 (251228) (ByteDance) or GLM-5.3 (reka-ai) based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Seed 1.8 (251228) (ByteDance)	GLM-5.3 (reka-ai)
Provider	LLM Gateway	LLM Gateway
Input / 1M tokens	$0.25	$1.17
Output / 1M tokens	$2.00	$3.96
Context window	256K	1M
Parameters	—	—
Open weights	No	Yes
Released	Dec 2025	Aug 2026

Seed 1.8 (251228) (ByteDance) details →GLM-5.3 (reka-ai) details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.