Is Mistral Small 3.1 or GPT-5.3 Codex cheaper?

Mistral Small 3.1 is cheaper on output tokens ($0.30 vs $14.00 per 1M).

Which has the larger context window, Mistral Small 3.1 or GPT-5.3 Codex?

GPT-5.3 Codex has the larger context window (400K tokens).

Mistral Small 3.1 vs GPT-5.3 Codex

Mistral Small 3.1 is cheaper on output tokens, while GPT-5.3 Codex offers a larger context window. Choose Mistral Small 3.1 or GPT-5.3 Codex based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Mistral Small 3.1	GPT-5.3 Codex
Provider	Azure Cognitive Services	Azure Cognitive Services
Input / 1M tokens	$0.10	$1.75
Output / 1M tokens	$0.30	$14.00
Context window	128K	400K
Parameters	—	—
Open weights	No	No
Released	Mar 2025	Feb 2026

Mistral Small 3.1 details →GPT-5.3 Codex details →

FAQ

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