Mistral Medium 3.5 vs GPT-5 Image Mini

Mistral Medium 3.5 at $1.73 in and $8.63 out and GPT-5 Image Mini at $2.88 in and $2.30 out — per million tokens, from the same wallet.

Mistral Medium 3.5

Mistral AI

1.6¢

for a client proposal

$1.73 in · $8.63 out / 1M

262K context · released 6 months ago

Full page →

GPT-5 Image Mini

OpenAI

1.6¢

for a client proposal

$2.88 in · $2.30 out / 1M

400K context · released October 2025

Full page →

Asking all both at once — identical prompt, identical context — costs about 3.2¢ for a typical client proposal.

At a glance

Cheapest input: Mistral Medium 3.5 at $1.73 per million tokens.
Cheapest output: GPT-5 Image Mini at $2.30 per million tokens.
Largest context: GPT-5 Image Mini 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

Mistral Medium 3.5

0.78¢

GPT-5 Image Mini

0.69¢

Draft a client proposal from notes

5K in · 800 out

Mistral Medium 3.5

1.6¢

GPT-5 Image Mini

1.6¢

Context-heavy session (Alyph workspace)

155K in · 4K out

Mistral Medium 3.5

$0.30

GPT-5 Image Mini

$0.45

Analyze a 50-page legal contract

35K in · 1K out

Mistral Medium 3.5

$0.07

GPT-5 Image Mini

$0.10

Large architecture refactor

250K in · 3K out

Mistral Medium 3.5

$0.46

GPT-5 Image Mini

$0.73

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

Mistral Medium 3.5

GPT-5 Image Mini

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

Pricing

Mistral Medium 3.5

GPT-5 Image Mini

Input / 1M tokens

$1.73

$2.88

Output / 1M tokens

$8.63

$2.30

Cached input / 1M

—

$0.287

Web search

—

1.1¢ / search

Specs

Mistral Medium 3.5

GPT-5 Image Mini

Provider

Mistral AI

OpenAI

Released

6 months ago

October 2025

Context window

262K

400K

Max output

—

128K

Input

Text, Images, and Files

Files, Images, and Text

Output

Text

Images and Text

Reasoning

Shows its thinking

Knowledge cutoff

—

Try it with real numbers

2K tokens in · 500 tokens out.

Mistral Medium 3.5

Mistral AI

0.78¢

for this task

44% input · 56% output

Full pricing →

GPT-5 Image Mini

OpenAI

0.69¢

for this task

83% input · 17% output

Full pricing →

All 2, same prompt and context: 1.5¢. That is the entire cost of the comparison.

Your $5 welcome credit covers about 341 of these.

Which should you pick?

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

On price, Mistral Medium 3.5 is the cheapest of the two on a typical task, at about 1.6¢.

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 →

Mistral Medium 3.5 pricing →GPT-5 Image Mini pricing →Add Lyria 3 Clip Preview Add Grok 4.20

Questions, answered

Which is cheaper, Mistral Medium 3.5 or GPT-5 Image Mini?

On a typical client proposal (5K tokens in, 800 out): Mistral Medium 3.5 at 1.6¢; GPT-5 Image Mini at 1.6¢. Long prompts can change the order when long-context rates apply.

Which has the largest context window?

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

Can I run Mistral Medium 3.5 and GPT-5 Image Mini 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 3.2¢ for a typical task.

Ask both at once

Identical prompt, identical context, answers side by side — about 3.2¢ for a typical client proposal. Free to start, with $5 of credit.