Nano Banana 2.1 vs GPT-5.6 Sol Pro

Price, context window & benchmark comparison

Google

Nano Banana 2.1

Google
$1.50 / $7.50
Input / Output · per 1M tokens
VS
OpenAI

GPT-5.6 Sol Pro

OpenAI
$4.00 / $20.00
Input / Output · per 1M tokens
Compare different models
Google
OpenAI
Verdict: Nano Banana 2.1 is 2.7× cheaper than GPT-5.6 Sol Pro on a typical 3:1 input/output mix. GPT-5.6 Sol Pro has the larger context window (1.1M vs 66K).
Nano Banana 2.1GPT-5.6 Sol Pro
Input price / 1M$1.50$4.00
Output price / 1M$7.50$20.00
Blended price (3:1)$3.00$8.00
Cached input / 1M—$0.40
Context window66K1.1M
Max output59K128K
Intelligence index——
Coding index——
Providers1—
Best provider uptime (30m)100.0%—
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-10-062026-07-09
Retirement——

Cost calculator

FAQ

Which is cheaper, Nano Banana 2.1 or GPT-5.6 Sol Pro?

Nano Banana 2.1 is 2.7× cheaper than GPT-5.6 Sol Pro on a typical 3:1 input/output mix.

Nano Banana 2.1 vs GPT-5.6 Sol Pro: which has a bigger context window?

Nano Banana 2.1: 65,536 tokens. GPT-5.6 Sol Pro: 1,050,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Nano Banana 2.1 ≈ $6,750, GPT-5.6 Sol Pro ≈ $18,000.

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