Kimi K2 0905 vs GPT Audio Mini

Kimi K2 0905 at $0.690 in and $2.88 out and GPT Audio Mini at $0.690 in and $2.76 out — per million tokens, from the same wallet.

Kimi K2 0905

Moonshot AI

0.57¢

for a client proposal

$0.690 in · $2.88 out / 1M

262K context · released September 2025

Full page →

GPT Audio Mini

OpenAI

0.57¢

for a client proposal

$0.690 in · $2.76 out / 1M

128K context · released 7 months ago

Full page →

Asking all both at once — identical prompt, identical context — costs about 1.1¢ for a typical client proposal.

At a glance

All 2 cost the same on input.
Cheapest output: GPT Audio Mini at $2.76 per million tokens.
Largest context: Kimi K2 0905 at 262K tokens — about 370 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

Kimi K2 0905

0.28¢

GPT Audio Mini

0.28¢

Draft a client proposal from notes

5K in · 800 out

Kimi K2 0905

0.57¢

GPT Audio Mini

0.57¢

Context-heavy session (Alyph workspace)

155K in · 4K out

Kimi K2 0905

$0.12

GPT Audio Mini

needs 155K ctx

Analyze a 50-page legal contract

35K in · 1K out

Kimi K2 0905

2.7¢

GPT Audio Mini

2.7¢

Large architecture refactor

250K in · 3K out

Kimi K2 0905

$0.18

GPT Audio Mini

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

Kimi K2 0905

GPT Audio Mini

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

Pricing

Kimi K2 0905

GPT Audio Mini

Input / 1M tokens

$0.690

Output / 1M tokens

$2.88

$2.76

Specs

Kimi K2 0905

GPT Audio Mini

Provider

Moonshot AI

OpenAI

Released

September 2025

7 months ago

Context window

262K

128K

Max output

100K

16K

Input

Text

Text and Audio

Output

Text

Text and Audio

Reasoning

Answers directly

Knowledge cutoff

2024-12-31

—

Try it with real numbers

2K tokens in · 500 tokens out.

Kimi K2 0905

Moonshot AI

0.28¢

for this task

49% input · 51% output

Full pricing →

GPT Audio Mini

OpenAI

0.28¢

for this task

50% input · 50% output

Full pricing →

All 2, same prompt and context: 0.56¢. That is the entire cost of the comparison.

Your $5 welcome credit covers about 896 of these.

Which should you pick?

For long documents, Kimi K2 0905 has the largest context window here — 262K tokens.

On price, GPT Audio Mini is the cheapest of the two on a typical task, at about 0.57¢.

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 →

Kimi K2 0905 pricing →GPT Audio Mini pricing →Add Lyria 3 Clip Preview Add Grok 4.20

Questions, answered

Which is cheaper, Kimi K2 0905 or GPT Audio Mini?

On a typical client proposal (5K tokens in, 800 out): GPT Audio Mini at 0.57¢; Kimi K2 0905 at 0.57¢. Long prompts can change the order when long-context rates apply.

Which has the largest context window?

Kimi K2 0905 — 262K tokens, about 370 pages.

Can I run Kimi K2 0905 and GPT Audio 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 1.1¢ for a typical task.

Ask both at once

Identical prompt, identical context, answers side by side — about 1.1¢ for a typical client proposal. Free to start, with $5 of credit.