Nano Banana Pro (Gemini 3 Pro Image) vs GPT-3.5 Turbo 16k

GPT-3.5 Turbo 16k costs 3.0x less per output token than Nano Banana Pro (Gemini 3 Pro Image) ($4.00 vs $12.00 per million). Updated October 22, 2026; no benchmark has tested both models yet.

Replace Nano Banana Pro (Gemini 3 Pro Image) Replace GPT-3.5 Turbo 16k

Nano Banana Pro (Gemini 3 Pro Image)Google

Coding: No data
Overall: No data
Output $/M: $12.00

GPT-3.5 Turbo 16kOpenAI

Coding: No data
Overall: No data
Output $/M: $4.00

vs $12.00 vs $4.00 per 1M output tokens. GPT-3.5 Turbo 16k is 3.0x cheaper.

Nano Banana Pro (Gemini 3 Pro Image) or GPT-3.5 Turbo 16k: which to pick

Neither model has a coding score yet, so the two cannot be ranked on coding.

Pick Nano Banana Pro (Gemini 3 Pro Image) for a larger context window (131K against 16K tokens).

Model ANano Banana Pro (Gemini 3 Pro Image)GoogleNot benchmarkedNo coding benchmarkNo cost per solved task Model BGPT-3.5 Turbo 16kOpenAINot benchmarkedNo coding benchmarkNo cost per solved task

No benchmark has tested both yet. Nano Banana Pro (Gemini 3 Pro Image) has results on LMArena Image Edit; GPT-3.5 Turbo 16k has none yet. Compare them on price and context instead.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

Coding
Vibe Coding Index, six public coding benchmarks
No call
Neither has a coding score yet.
One side not measured
Long documents
Listed context window
Nano Banana Pro (Gemini 3 Pro Image)
Nano Banana Pro (Gemini 3 Pro Image) takes 131K tokens against 16K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
GPT-3.5 Turbo 16k
Nano Banana Pro (Gemini 3 Pro Image) $0.0080, GPT-3.5 Turbo 16k $0.0050 per turn.
List prices

At a glance

Coding index: Nano Banana Pro (Gemini 3 Pro Image) not benchmarked, GPT-3.5 Turbo 16k not benchmarked.
Widest category: None yet: no category has been tested on both models.
Widest single gap: None yet: no benchmark has tested both models.
Output price: Nano Banana Pro (Gemini 3 Pro Image) $12.00 against GPT-3.5 Turbo 16k $4.00 per million output tokens, 3.0x apart.
Context window: Nano Banana Pro (Gemini 3 Pro Image) takes 131K tokens, GPT-3.5 Turbo 16k 16K.

Benchmark by benchmark

Every board either model has a result on, a category to a fold; bars are each result on a 0 to 100 scale. Only one model is measured on each, so no row names a leader.

Image generationDirectional onlyPublic boards, shown as published, kept out of the index1 board measured

Image generation benchmarks for Nano Banana Pro (Gemini 3 Pro Image) and GPT-3.5 Turbo 16k
Benchmark	Nano Banana Pro (Gemini 3 Pro Image)	GPT-3.5 Turbo 16k	Leader
LMArena Image Edit	1390	Not measured	Only Nano Banana Pro (Gemini 3 Pro Image) measured
Neither model has a result on the other 4 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

Nano Banana Pro (Gemini 3 Pro Image)$0.0080Fits in one request

GPT-3.5 Turbo 16k$0.0050Fits in one request

GPT-3.5 Turbo 16k costs less

Repository review

50K input + 3K output tokens

Nano Banana Pro (Gemini 3 Pro Image)$0.136Fits in one request

GPT-3.5 Turbo 16k$0.162Exceeds the context window

Nano Banana Pro (Gemini 3 Pro Image) costs less

Agent loop

200K input + 10K output tokens

Nano Banana Pro (Gemini 3 Pro Image)$0.520Exceeds the context window

GPT-3.5 Turbo 16k$0.640Exceeds the context window

Nano Banana Pro (Gemini 3 Pro Image) costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of Nano Banana Pro (Gemini 3 Pro Image) and GPT-3.5 Turbo 16k
Specification	Google Nano Banana Pro (Gemini 3 Pro Image)	OpenAI GPT-3.5 Turbo 16k
Maker	Google	OpenAI
Weights	No public weights listed	No public weights listed
Released	June 18, 2026	August 28, 2023
Context window	131K	16K
Input $/Mtok	$2.00	$3.00
Output $/Mtok	$12.00	$4.00
Coding index	Not benchmarked	Not benchmarked
Independent measurements behind it	0	0
Cost per solved task	Not computable	Not computable
Source	OpenRouter listing	OpenRouter listing

Questions

Is Nano Banana Pro (Gemini 3 Pro Image) better than GPT-3.5 Turbo 16k for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Nano Banana Pro (Gemini 3 Pro Image) for a larger context window (131K against 16K tokens).

Which is cheaper, Nano Banana Pro (Gemini 3 Pro Image) or GPT-3.5 Turbo 16k?

Nano Banana Pro (Gemini 3 Pro Image) costs $2.00 per million input tokens and $12.00 per million output tokens; GPT-3.5 Turbo 16k costs $3.00 and $4.00. Cost per solved task is known for neither of them.

Which has the bigger context window, Nano Banana Pro (Gemini 3 Pro Image) or GPT-3.5 Turbo 16k?

Nano Banana Pro (Gemini 3 Pro Image), with 131K tokens against 16K.

Has any benchmark tested both Nano Banana Pro (Gemini 3 Pro Image) and GPT-3.5 Turbo 16k?

No benchmark has tested both yet. Nano Banana Pro (Gemini 3 Pro Image) has results on LMArena Image Edit; GPT-3.5 Turbo 16k has none yet. Compare them on price and context instead. Data as of October 22, 2026.