Is Phi-3.5-mini instruct (128k) or OpenAI o3-mini cheaper?

Phi-3.5-mini instruct (128k) and OpenAI o3-mini have comparable output pricing.

Which has the larger context window, Phi-3.5-mini instruct (128k) or OpenAI o3-mini?

OpenAI o3-mini has the larger context window (200K tokens).

Phi-3.5-mini instruct (128k) vs OpenAI o3-mini

Both have similar output pricing, while OpenAI o3-mini offers a larger context window. Choose Phi-3.5-mini instruct (128k) or OpenAI o3-mini based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Phi-3.5-mini instruct (128k)	OpenAI o3-mini
Provider	GitHub Models	GitHub Models
Input / 1M tokens	$0.00	$0.00
Output / 1M tokens	$0.00	$0.00
Context window	128K	200K
Parameters	—	—
Open weights	Yes	No
Released	Aug 2024	Jan 2025

Phi-3.5-mini instruct (128k) details →OpenAI o3-mini details →

FAQ

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