Nano Banana (Gemini 2.5 Flash Image) vs GPT-6.1 Terra Pro

Price, context window & benchmark comparison

Google

Nano Banana (Gemini 2.5 Flash Image)

Google
$0.30 / $2.50
Input / Output · per 1M tokens
VS
OpenAI

GPT-6.1 Terra Pro

OpenAI
$1.00 / $5.00
Input / Output · per 1M tokens
Compare different models
Google
OpenAI
Verdict: Nano Banana (Gemini 2.5 Flash Image) is 2.4× cheaper than GPT-6.1 Terra Pro on a typical 3:1 input/output mix. GPT-6.1 Terra Pro has the larger context window (1.1M vs 33K).
Nano Banana (Gemini 2.5 Flash Image)GPT-6.1 Terra Pro
Input price / 1M$0.30$1.00
Output price / 1M$2.50$5.00
Blended price (3:1)$0.85$2.00
Cached input / 1M$0.03$0.05
Context window33K1.1M
Max output8K128K
Intelligence index——
Coding index——
Providers—6
Best provider uptime (30m)—100.0%
Vision inputYesYes
ReasoningNoYes
Tool callingNoYes
Released2025-10-072026-10-26
Retirement——

Cost calculator

FAQ

Which is cheaper, Nano Banana (Gemini 2.5 Flash Image) or GPT-6.1 Terra Pro?

Nano Banana (Gemini 2.5 Flash Image) is 2.4× cheaper than GPT-6.1 Terra Pro on a typical 3:1 input/output mix.

Nano Banana (Gemini 2.5 Flash Image) vs GPT-6.1 Terra Pro: which has a bigger context window?

Nano Banana (Gemini 2.5 Flash Image): 32,768 tokens. GPT-6.1 Terra Pro: 1,050,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Nano Banana (Gemini 2.5 Flash Image) ≈ $1,850, GPT-6.1 Terra Pro ≈ $4,500.

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