Ministral 3 3B 2512 vs GPT-5 Nano

Ministral 3 3B 2512 at $0.115 in and $0.115 out and GPT-5 Nano at $0.058 in and $0.460 out — per million tokens, from the same wallet.

Ministral 3 3B 2512

Mistral AI

0.07¢

for a client proposal

$0.115 in · $0.115 out / 1M

131K context · released December 2025

Full page →

GPT-5 Nano

OpenAI

0.07¢

for a client proposal

$0.058 in · $0.460 out / 1M

400K context · released August 2025

Full page →

Asking all both at once — identical prompt, identical context — costs about 0.13¢ for a typical client proposal.

At a glance

Cheapest input: GPT-5 Nano at $0.058 per million tokens.
Cheapest output: Ministral 3 3B 2512 at $0.115 per million tokens.
Largest context: GPT-5 Nano at 400K tokens — about 570 pages.

Cost per task

Estimated totals at the rates above. Solid bar is input, lighter bar is output.

Quick code fix

2K in · 500 out

Ministral 3 3B 2512

0.03¢

GPT-5 Nano

0.03¢

Draft a client proposal from notes

5K in · 800 out

Ministral 3 3B 2512

0.07¢

GPT-5 Nano

0.07¢

Context-heavy session (Alyph workspace)

155K in · 4K out

Ministral 3 3B 2512

needs 155K ctx

GPT-5 Nano

1.1¢

Analyze a 50-page legal contract

35K in · 1K out

Ministral 3 3B 2512

0.41¢

GPT-5 Nano

0.25¢

Large architecture refactor

250K in · 3K out

Ministral 3 3B 2512

needs 250K ctx

GPT-5 Nano

1.6¢

Solid part of each bar is input tokens, the lighter part is output. Models that don’t fit a task are marked instead of priced.

Cost vs Token Amount

Drag the slider to adjust the split between input and output workload.

80% Input20% Output

Ministral 3 3B 2512

GPT-5 Nano

Adjust the ratio slider to change how output tokens influence the final price for equivalent workloads.

Pricing

Ministral 3 3B 2512

GPT-5 Nano

Input / 1M tokens

$0.115

$0.058

Output / 1M tokens

$0.115

$0.460

Cached input / 1M

$0.011

$0.0057

Web search

—

1.1¢ / search

Specs

Ministral 3 3B 2512

GPT-5 Nano

Provider

Mistral AI

OpenAI

Released

December 2025

August 2025

Context window

131K

400K

Max output

—

128K

Input

Text and Images

Text, Images, and Files

Output

Text

Reasoning

Answers directly

Shows its thinking

Knowledge cutoff

—

2024-05-31

Try it with real numbers

2K tokens in · 500 tokens out.

Ministral 3 3B 2512

Mistral AI

0.03¢

for this task

80% input · 20% output

Full pricing →

GPT-5 Nano

OpenAI

0.03¢

for this task

33% input · 67% output

Full pricing →

All 2, same prompt and context: 0.06¢. That is the entire cost of the comparison.

Your $5 welcome credit covers about 7,905 of these.

Which should you pick?

For long documents, GPT-5 Nano has the largest context window here — 400K tokens.

On price, GPT-5 Nano is the cheapest of the two on a typical task, at about 0.07¢.

If you want to watch the model think, GPT-5 Nano shows reasoning; the other answers directly.

Or don’t pick. Send the identical prompt to all both, read the answers side by side, and keep the winner. How to run a fair bake-off →

Ministral 3 3B 2512 pricing →GPT-5 Nano pricing →Add Lyria 3 Clip Preview Add Grok 4.20

Questions, answered

Which is cheaper, Ministral 3 3B 2512 or GPT-5 Nano?

On a typical client proposal (5K tokens in, 800 out): GPT-5 Nano at 0.07¢; Ministral 3 3B 2512 at 0.07¢. Long prompts can change the order when long-context rates apply.

Which has the largest context window?

GPT-5 Nano — 400K tokens, about 570 pages.

Can I run Ministral 3 3B 2512 and GPT-5 Nano side by side on Alyph?

Yes — that is what Alyph is built for: the identical prompt with identical context to all 2, answers rendered side by side, billed from one wallet. This exact combination costs about 0.13¢ for a typical task.

Ask both at once

Identical prompt, identical context, answers side by side — about 0.13¢ for a typical client proposal. Free to start, with $5 of credit.