DeepSeek V3.1 Terminus vs Mistral Small 3.1 24B

DeepSeek V3.1 Terminus at $0.310 in and $1.15 out and Mistral Small 3.1 24B at $0.404 in and $0.638 out — per million tokens, from the same wallet.

DeepSeek V3.1 Terminus

DeepSeek

0.25¢

for a client proposal

$0.310 in · $1.15 out / 1M

131K context · released September 2025

Full page →

Mistral Small 3.1 24B

Mistral AI

0.25¢

for a client proposal

$0.404 in · $0.638 out / 1M

128K context · released March 2025

Full page →

Asking all both at once — identical prompt, identical context — costs about 0.5¢ for a typical client proposal.

At a glance

Cheapest input: DeepSeek V3.1 Terminus at $0.310 per million tokens.
Cheapest output: Mistral Small 3.1 24B at $0.638 per million tokens.
Largest context: DeepSeek V3.1 Terminus at 131K tokens — about 190 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

DeepSeek V3.1 Terminus

0.12¢

Mistral Small 3.1 24B

0.11¢

Draft a client proposal from notes

5K in · 800 out

DeepSeek V3.1 Terminus

0.25¢

Mistral Small 3.1 24B

0.25¢

Context-heavy session (Alyph workspace)

155K in · 4K out

DeepSeek V3.1 Terminus

needs 155K ctx

Mistral Small 3.1 24B

needs 155K ctx

Analyze a 50-page legal contract

35K in · 1K out

DeepSeek V3.1 Terminus

1.2¢

Mistral Small 3.1 24B

1.5¢

Large architecture refactor

250K in · 3K out

DeepSeek V3.1 Terminus

needs 250K ctx

Mistral Small 3.1 24B

needs 250K ctx

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

DeepSeek V3.1 Terminus

Mistral Small 3.1 24B

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

Pricing

DeepSeek V3.1 Terminus

Mistral Small 3.1 24B

Input / 1M tokens

$0.310

$0.404

Output / 1M tokens

$1.15

$0.638

Cached input / 1M

$0.155

—

Specs

DeepSeek V3.1 Terminus

Mistral Small 3.1 24B

Provider

DeepSeek

Mistral AI

Released

September 2025

March 2025

Context window

131K

128K

Max output

33K

128K

Input

Text

Text and Images

Output

Text

Reasoning

Shows its thinking

Answers directly

Knowledge cutoff

2025-03-31

2023-10-31

Try it with real numbers

2K tokens in · 500 tokens out.

DeepSeek V3.1 Terminus

DeepSeek

0.12¢

for this task

52% input · 48% output

Full pricing →

Mistral Small 3.1 24B

Mistral AI

0.11¢

for this task

72% input · 28% output

Full pricing →

All 2, same prompt and context: 0.23¢. That is the entire cost of the comparison.

Your $5 welcome credit covers about 2,152 of these.

Which should you pick?

For long documents, DeepSeek V3.1 Terminus has the largest context window here — 131K tokens.

On price, DeepSeek V3.1 Terminus is the cheapest of the two on a typical task, at about 0.25¢.

For images or files, Mistral Small 3.1 24B can read them directly; DeepSeek V3.1 Terminus is text-only.

If you want to watch the model think, DeepSeek V3.1 Terminus 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 →

DeepSeek V3.1 Terminus pricing →Mistral Small 3.1 24B pricing →Add Lyria 3 Clip Preview Add Grok 4.20

Questions, answered

Which is cheaper, DeepSeek V3.1 Terminus or Mistral Small 3.1 24B?

On a typical client proposal (5K tokens in, 800 out): DeepSeek V3.1 Terminus at 0.25¢; Mistral Small 3.1 24B at 0.25¢. Long prompts can change the order when long-context rates apply.

Which has the largest context window?

DeepSeek V3.1 Terminus — 131K tokens, about 190 pages.

Can I run DeepSeek V3.1 Terminus and Mistral Small 3.1 24B 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 0.5¢ for a typical task.

Ask both at once

Identical prompt, identical context, answers side by side — about 0.5¢ for a typical client proposal. Free to start, with $5 of credit.