Nano Banana 2.1 vs GPT Chat Latest

Price, context window & benchmark comparison

Nano Banana 2.1

Google

$1.50 / $7.50

Input / Output · per 1M tokens

GPT Chat Latest

OpenAI

$5.00 / $30.00

Input / Output · per 1M tokens

Compare different models

Verdict: Nano Banana 2.1 is 3.8× cheaper than GPT Chat Latest on a typical 3:1 input/output mix. GPT Chat Latest has the larger context window (400K vs 66K).

	Nano Banana 2.1	GPT Chat Latest
Input price / 1M	$1.50	$5.00
Output price / 1M	$7.50	$30.00
Blended price (3:1)	$3.00	$11.25
Cached input / 1M	—	$0.50
Context window	66K	400K
Max output	59K	128K
Intelligence index	—	—
Coding index	—	—
Providers	1	—
Best provider uptime (30m)	100.0%	—
Vision input	Yes	Yes
Reasoning	Yes	No
Tool calling	Yes	Yes
Released	2026-10-06	2026-05-05
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, Nano Banana 2.1 or GPT Chat Latest?

Nano Banana 2.1 is 3.8× cheaper than GPT Chat Latest on a typical 3:1 input/output mix.

Nano Banana 2.1 vs GPT Chat Latest: which has a bigger context window?

Nano Banana 2.1: 65,536 tokens. GPT Chat Latest: 400,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Nano Banana 2.1 ≈ $6,750, GPT Chat Latest ≈ $25,000.

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