Is GPT-4 (OpenAI) or GLM-5.3 Flash (reka-ai) cheaper?

GLM-5.3 Flash (reka-ai) is cheaper on output tokens ($0.50 vs $60.00 per 1M).

Which has the larger context window, GPT-4 (OpenAI) or GLM-5.3 Flash (reka-ai)?

GLM-5.3 Flash (reka-ai) has the larger context window (262K tokens).

GPT-4 (OpenAI) vs GLM-5.3 Flash (reka-ai)

GLM-5.3 Flash (reka-ai) is cheaper on output tokens, while GLM-5.3 Flash (reka-ai) offers a larger context window. Choose GPT-4 (OpenAI) or GLM-5.3 Flash (reka-ai) based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-4 (OpenAI)	GLM-5.3 Flash (reka-ai)
Provider	LLM Gateway	LLM Gateway
Input / 1M tokens	$30.00	$0.15
Output / 1M tokens	$60.00	$0.50
Context window	8K	262K
Parameters	—	—
Open weights	No	Yes
Released	Nov 2023	Aug 2026

GPT-4 (OpenAI) details →GLM-5.3 Flash (reka-ai) details →

FAQ

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