Is Google: Gemma 4 31B or OpenAI: GPT-5 Pro cheaper?

Google: Gemma 4 31B is cheaper on output tokens ($0.40 vs $120.00 per 1M).

Which has the larger context window, Google: Gemma 4 31B or OpenAI: GPT-5 Pro?

OpenAI: GPT-5 Pro has the larger context window (400K tokens).

Google: Gemma 4 31B vs OpenAI: GPT-5 Pro

Google: Gemma 4 31B is cheaper on output tokens, while OpenAI: GPT-5 Pro offers a larger context window. Choose Google: Gemma 4 31B or OpenAI: GPT-5 Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Google: Gemma 4 31B	OpenAI: GPT-5 Pro
Provider	Kilo Gateway	Kilo Gateway
Input / 1M tokens	$0.14	$15.00
Output / 1M tokens	$0.40	$120.00
Context window	262K	400K
Parameters	—	—
Open weights	Yes	No
Released	Apr 2026	Oct 2025

Google: Gemma 4 31B details →OpenAI: GPT-5 Pro details →

FAQ

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