Aion-2.0 vs Nano Banana 2 (Gemini 3.1 Flash Image)

Aion-2.0 costs 1.9x less per output token than Nano Banana 2 (Gemini 3.1 Flash Image) ($1.60 vs $3.00 per million). Updated October 22, 2026; no benchmark has tested both models yet.

Replace Aion-2.0 Replace Nano Banana 2 (Gemini 3.1 Flash Image)

A Aion-2.0Aion Labs

Coding: No data
Overall: No data
Output $/M: $1.60

Nano Banana 2 (Gemini 3.1 Flash Image)Google

Coding: No data
Overall: No data
Output $/M: $3.00

vs $1.60 vs $3.00 per 1M output tokens. Aion-2.0 is 1.9x cheaper.

Aion-2.0 or Nano Banana 2 (Gemini 3.1 Flash Image): which to pick

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

Pick Aion-2.0 for output tokens 1.9x cheaper ($1.60 vs $3.00 per million).

Model AAion-2.0Aion LabsNot benchmarkedNo coding benchmarkNo cost per solved task Model BNano Banana 2 (Gemini 3.1 Flash Image)GoogleNot benchmarkedNo coding benchmarkNo cost per solved task

No benchmark has tested both yet. Aion-2.0 has none yet; Nano Banana 2 (Gemini 3.1 Flash Image) on LMArena Image Edit. 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
No call
Both take 131K tokens.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Aion-2.0
Aion-2.0 $0.0016, Nano Banana 2 (Gemini 3.1 Flash Image) $0.0020 per turn.
List prices

At a glance

Coding index: Aion-2.0 not benchmarked, Nano Banana 2 (Gemini 3.1 Flash Image) 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: Aion-2.0 $1.60 against Nano Banana 2 (Gemini 3.1 Flash Image) $3.00 per million output tokens, 1.9x apart.
Context window: Both take 131K tokens.

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 Aion-2.0 and Nano Banana 2 (Gemini 3.1 Flash Image)
Benchmark	Aion-2.0	Nano Banana 2 (Gemini 3.1 Flash Image)	Leader
LMArena Image Edit	Not measured	1387	Only Nano Banana 2 (Gemini 3.1 Flash 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

Aion-2.0$0.0016Fits in one request

Nano Banana 2 (Gemini 3.1 Flash Image)$0.0020Fits in one request

Aion-2.0 costs less

Repository review

50K input + 3K output tokens

Aion-2.0$0.045Fits in one request

Nano Banana 2 (Gemini 3.1 Flash Image)$0.034Fits in one request

Nano Banana 2 (Gemini 3.1 Flash Image) costs less

Agent loop

200K input + 10K output tokens

Aion-2.0$0.176Exceeds the context window

Nano Banana 2 (Gemini 3.1 Flash Image)$0.130Exceeds the context window

Nano Banana 2 (Gemini 3.1 Flash 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 Aion-2.0 and Nano Banana 2 (Gemini 3.1 Flash Image)
Specification	AionLabs Aion-2.0	Google Nano Banana 2 (Gemini 3.1 Flash Image)
Maker	Aion Labs	Google
Weights	No public weights listed	No public weights listed
Released	February 23, 2026	June 18, 2026
Context window	131K	131K
Input $/Mtok	$0.80	$0.50
Output $/Mtok	$1.60	$3.00
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 Aion-2.0 better than Nano Banana 2 (Gemini 3.1 Flash Image) for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Aion-2.0 for output tokens 1.9x cheaper ($1.60 vs $3.00 per million).

Which is cheaper, Aion-2.0 or Nano Banana 2 (Gemini 3.1 Flash Image)?

Aion-2.0 costs $0.80 per million input tokens and $1.60 per million output tokens; Nano Banana 2 (Gemini 3.1 Flash Image) costs $0.50 and $3.00. Cost per solved task is known for neither of them.

Which has the bigger context window, Aion-2.0 or Nano Banana 2 (Gemini 3.1 Flash Image)?

Neither: both take 131K tokens.

Has any benchmark tested both Aion-2.0 and Nano Banana 2 (Gemini 3.1 Flash Image)?

No benchmark has tested both yet. Aion-2.0 has none yet; Nano Banana 2 (Gemini 3.1 Flash Image) on LMArena Image Edit. Compare them on price and context instead. Data as of October 22, 2026.