Is o3 Mini (OpenAI) or GLM-5.3 (reka-ai) cheaper?

GLM-5.3 (reka-ai) is cheaper on output tokens ($3.96 vs $4.40 per 1M).

Which has the larger context window, o3 Mini (OpenAI) or GLM-5.3 (reka-ai)?

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

o3 Mini (OpenAI) vs GLM-5.3 (reka-ai)

GLM-5.3 (reka-ai) is cheaper on output tokens, while GLM-5.3 (reka-ai) offers a larger context window. Choose o3 Mini (OpenAI) or GLM-5.3 (reka-ai) based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	o3 Mini (OpenAI)	GLM-5.3 (reka-ai)
Provider	LLM Gateway	LLM Gateway
Input / 1M tokens	$1.10	$1.17
Output / 1M tokens	$4.40	$3.96
Context window	200K	1M
Parameters	—	—
Open weights	No	Yes
Released	Dec 2024	Aug 2026

o3 Mini (OpenAI) 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.