Gemini 2.5 Flash Lite vs GPT-4.1 Nano

Gemini 2.5 Flash Lite at $0.115 in and $0.460 out and GPT-4.1 Nano at $0.115 in and $0.460 out — per million tokens, from the same wallet.

Gemini 2.5 Flash Lite

Google

0.09¢

for a client proposal

$0.115 in · $0.460 out / 1M

1.05M context · released July 2025

Full page →

GPT-4.1 Nano

OpenAI

0.09¢

for a client proposal

$0.115 in · $0.460 out / 1M

1.05M context · released April 2025

Full page →

Asking all both at once — identical prompt, identical context — costs about 0.19¢ for a typical client proposal.

At a glance

All 2 cost the same on input.
Largest context: Gemini 2.5 Flash Lite at 1.05M tokens — about 1,500 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

Gemini 2.5 Flash Lite

0.05¢

GPT-4.1 Nano

0.05¢

Draft a client proposal from notes

5K in · 800 out

Gemini 2.5 Flash Lite

0.09¢

GPT-4.1 Nano

0.09¢

Context-heavy session (Alyph workspace)

155K in · 4K out

Gemini 2.5 Flash Lite

2¢

GPT-4.1 Nano

2¢

Analyze a 50-page legal contract

35K in · 1K out

Gemini 2.5 Flash Lite

0.45¢

GPT-4.1 Nano

0.45¢

Large architecture refactor

250K in · 3K out

Gemini 2.5 Flash Lite

3¢

GPT-4.1 Nano

3¢

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

Gemini 2.5 Flash Lite

GPT-4.1 Nano

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

Pricing

Gemini 2.5 Flash Lite

GPT-4.1 Nano

Input / 1M tokens

$0.115

Output / 1M tokens

$0.460

Cached input / 1M

$0.011

$0.029

Web search

1.6¢ / search

1.1¢ / search

Specs

Gemini 2.5 Flash Lite

GPT-4.1 Nano

Provider

Google

OpenAI

Released

July 2025

April 2025

Context window

1.05M

Max output

66K

33K

Input

Text, Images, Files, Audio, and Video

Images, Text, and Files

Output

Text

Reasoning

Shows its thinking

Answers directly

Knowledge cutoff

2025-01-31

2024-06-30

Try it with real numbers

2K tokens in · 500 tokens out.

Gemini 2.5 Flash Lite

Google

0.05¢

for this task

50% input · 50% output

Full pricing →

GPT-4.1 Nano

OpenAI

0.05¢

for this task

50% input · 50% output

Full pricing →

All 2, same prompt and context: 0.09¢. That is the entire cost of the comparison.

Your $5 welcome credit covers about 5,434 of these.

Which should you pick?

For long documents, Gemini 2.5 Flash Lite has the largest context window here — 1.05M tokens.

On price they are identical: about 0.09¢ for a typical task each.

If you want to watch the model think, Gemini 2.5 Flash Lite 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 →

Gemini 2.5 Flash Lite pricing →GPT-4.1 Nano pricing →Add Lyria 3 Clip Preview Add Grok 4.20

Questions, answered

Which is cheaper, Gemini 2.5 Flash Lite or GPT-4.1 Nano?

On a typical client proposal (5K tokens in, 800 out) they cost the same — about 0.09¢ each. Compare them on context and capabilities instead.

Which has the largest context window?

Gemini 2.5 Flash Lite — 1.05M tokens, about 1,500 pages.

Can I run Gemini 2.5 Flash Lite and GPT-4.1 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 0.19¢ for a typical task.

Ask both at once

Identical prompt, identical context, answers side by side — about 0.19¢ for a typical client proposal. Free to start, with $5 of credit.