Seed-2.0-Code vs Nano Banana (Gemini 2.5 Flash Image)
Updated October 21, 2026. No benchmark has tested both models yet. Coding is ranked on the Vibe Coding Index; every other board is shown as published.
- Coding
- No data
- Overall
- No data
- Output $/M
- $3.00
- Coding
- No data
- Overall
- No data
- Output $/M
- $2.50
Decision reading
Neither model has a coding score yet, so the two cannot be ranked on coding.
Seed-2.0-Code has the edge where the context window is larger, 262K against 33K tokens.
No benchmark has tested both yet. Seed-2.0-Code has none yet; Nano Banana (Gemini 2.5 Flash Image) on Design Arena: images, Design Arena: graphic design and Design Arena: logos. 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
Image generation
Design Arena: images
No call
Only Nano Banana (Gemini 2.5 Flash Image) has a Design Arena: images result, 1179.
Directional only
Long documents
Listed context window
Seed-2.0-Code
Seed-2.0-Code takes 262K tokens against 33K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Nano Banana (Gemini 2.5 Flash Image)
Seed-2.0-Code $0.0020, Nano Banana (Gemini 2.5 Flash Image) $0.0015 per turn.
List prices
At a glance
- Coding index
- Seed-2.0-Code not benchmarked, Nano Banana (Gemini 2.5 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
- Seed-2.0-Code $3.00 against Nano Banana (Gemini 2.5 Flash Image) $2.50 per million output tokens, 1.2x apart.
- Context window
- Seed-2.0-Code takes 262K tokens, Nano Banana (Gemini 2.5 Flash Image) 33K.
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 index3 boards measured
| Benchmark | Seed-2.0-Code | Nano Banana (Gemini 2.5 Flash Image) | Leader |
|---|---|---|---|
| Design Arena: images | Not measured | 1179 | Only Nano Banana (Gemini 2.5 Flash Image) measured |
| Design Arena: graphic design | Not measured | 1151 | Only Nano Banana (Gemini 2.5 Flash Image) measured |
| Design Arena: logos | Not measured | 1169 | Only Nano Banana (Gemini 2.5 Flash Image) measured |
| Neither model has a result on the other 2 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 (Gemini 2.5 Flash Image) costs less
Repository review
50K input + 3K output tokens
Nano Banana (Gemini 2.5 Flash Image) costs less
Agent loop
200K input + 10K output tokens
Nano Banana (Gemini 2.5 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.
| Specification | ByteDance Seed Seed-2.0-Code | Google Nano Banana (Gemini 2.5 Flash Image) |
|---|---|---|
| Maker | ByteDance Seed | |
| Weights | No public weights listed | No public weights listed |
| Released | August 12, 2026 | October 7, 2025 |
| Context window | 262K | 33K |
| Input $/Mtok | $0.50 | $0.30 |
| Output $/Mtok | $3.00 | $2.50 |
| 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 Seed-2.0-Code better than Nano Banana (Gemini 2.5 Flash Image) for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Seed-2.0-Code has the edge where the context window is larger, 262K against 33K tokens.
Which is cheaper, Seed-2.0-Code or Nano Banana (Gemini 2.5 Flash Image)?
Seed-2.0-Code costs $0.50 per million input tokens and $3.00 per million output tokens; Nano Banana (Gemini 2.5 Flash Image) costs $0.30 and $2.50. Cost per solved task is known for neither of them.
Which has the bigger context window, Seed-2.0-Code or Nano Banana (Gemini 2.5 Flash Image)?
Seed-2.0-Code, with 262K tokens against 33K.
Has any benchmark tested both Seed-2.0-Code and Nano Banana (Gemini 2.5 Flash Image)?
No benchmark has tested both yet. Seed-2.0-Code has none yet; Nano Banana (Gemini 2.5 Flash Image) on Design Arena: images, Design Arena: graphic design and Design Arena: logos. Compare them on price and context instead. Data as of October 21, 2026.