Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Gemma 2 27B
Gemma 2 27B costs 4.6x less per output token than Nano Banana 2 (Gemini 3.1 Flash Image Preview) ($0.65 vs $3.00 per million). Updated October 21, 2026; no benchmark has tested both models yet.
- Coding
- No data
- Overall
- No data
- Output $/M
- $3.00
- Coding
- No data
- Overall
- No data
- Output $/M
- $0.65
Nano Banana 2 (Gemini 3.1 Flash Image Preview) or Gemma 2 27B: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Pick Nano Banana 2 (Gemini 3.1 Flash Image Preview) for a larger context window (66K against 8K tokens).
No benchmark has tested both yet. Nano Banana 2 (Gemini 3.1 Flash Image Preview) has results on Design Arena: images, Design Arena: graphic design and Design Arena: logos; Gemma 2 27B on LMArena Text: coding, LMArena Text: software and IT and Epoch Capabilities Index. 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 2 (Gemini 3.1 Flash Image Preview) has a Design Arena: images result, 1269.
Directional only
Long documents
Listed context window
Nano Banana 2 (Gemini 3.1 Flash Image Preview)
Nano Banana 2 (Gemini 3.1 Flash Image Preview) takes 66K tokens against 8K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Gemma 2 27B
Nano Banana 2 (Gemini 3.1 Flash Image Preview) $0.0020, Gemma 2 27B $0.0010 per turn.
List prices
At a glance
- Coding index
- Nano Banana 2 (Gemini 3.1 Flash Image Preview) not benchmarked, Gemma 2 27B 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 2 (Gemini 3.1 Flash Image Preview) $3.00 against Gemma 2 27B $0.65 per million output tokens, 4.6x apart.
- Context window
- Nano Banana 2 (Gemini 3.1 Flash Image Preview) takes 66K tokens, Gemma 2 27B 8K.
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.
CodingDirectional onlySix of these boards feed the Vibe Coding Index2 boards measured
| Benchmark | Nano Banana 2 (Gemini 3.1 Flash Image Preview) | Gemma 2 27B | Leader |
|---|---|---|---|
| LMArena Text: coding | Not measured | 1211 | Only Gemma 2 27B measured |
| LMArena Text: software and IT | Not measured | 1228 | Only Gemma 2 27B measured |
| Neither model has a result on the other 37 boards here | |||
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index1 board measured
| Benchmark | Nano Banana 2 (Gemini 3.1 Flash Image Preview) | Gemma 2 27B | Leader |
|---|---|---|---|
| Epoch Capabilities Index | Not measured | 122.1 | Only Gemma 2 27B measured |
| Neither model has a result on the other 1 board here | |||
ReasoningDirectional onlyPublic boards, shown as published, kept out of the index4 boards measured
| Benchmark | Nano Banana 2 (Gemini 3.1 Flash Image Preview) | Gemma 2 27B | Leader |
|---|---|---|---|
| GPQA Diamond (Epoch AI run) | Not measured | 36.5% | Only Gemma 2 27B measured |
| LMArena Text: hard prompts | Not measured | 1198 | Only Gemma 2 27B measured |
| LMArena Text: expert | Not measured | 1171 | Only Gemma 2 27B measured |
| LMArena Text: hard prompts in English | Not measured | 1206 | Only Gemma 2 27B measured |
| Neither model has a result on the other 18 boards here | |||
MathDirectional onlyPublic boards, shown as published, kept out of the index4 boards measured
| Benchmark | Nano Banana 2 (Gemini 3.1 Flash Image Preview) | Gemma 2 27B | Leader |
|---|---|---|---|
| OTIS Mock AIME | Not measured | 1.4% | Only Gemma 2 27B measured |
| MATH level 5 | Not measured | 27.9% | Only Gemma 2 27B measured |
| LMArena Text: math | Not measured | 1212 | Only Gemma 2 27B measured |
| LMArena Text: mathematical work | Not measured | 1221 | Only Gemma 2 27B measured |
| Neither model has a result on the other 9 boards here | |||
KnowledgeDirectional onlyPublic boards, shown as published, kept out of the index6 boards measured
| Benchmark | Nano Banana 2 (Gemini 3.1 Flash Image Preview) | Gemma 2 27B | Leader |
|---|---|---|---|
| LegalBench (Vals AI) | Not measured | 68.0% | Only Gemma 2 27B measured |
| MMLU | Not measured | 75.7% | Only Gemma 2 27B measured |
| LMArena Text: science | Not measured | 1228 | Only Gemma 2 27B measured |
| LMArena Text: medicine and healthcare | Not measured | 1198 | Only Gemma 2 27B measured |
| LMArena Text: legal and government | Not measured | 1241 | Only Gemma 2 27B measured |
| LMArena Text: business and finance | Not measured | 1208 | Only Gemma 2 27B measured |
| Neither model has a result on the other 12 boards here | |||
GeneralDirectional onlyPublic boards, shown as published, kept out of the index19 boards measured
| Benchmark | Nano Banana 2 (Gemini 3.1 Flash Image Preview) | Gemma 2 27B | Leader |
|---|---|---|---|
| DTBench | Not measured | 48.0% | Only Gemma 2 27B measured |
| LMCA | Not measured | 7.1% | Only Gemma 2 27B measured |
| LMArena Text | Not measured | 1231 | Only Gemma 2 27B measured |
| LMArena Text: instruction following | Not measured | 1206 | Only Gemma 2 27B measured |
| LMArena Text: creative writing | Not measured | 1240 | Only Gemma 2 27B measured |
| LMArena Text: English | Not measured | 1242 | Only Gemma 2 27B measured |
| LMArena Text: non-English | Not measured | 1217 | Only Gemma 2 27B measured |
| LMArena Text: Chinese | Not measured | 1221 | Only Gemma 2 27B measured |
| LMArena Text: German | Not measured | 1209 | Only Gemma 2 27B measured |
| LMArena Text: Japanese | Not measured | 1175 | Only Gemma 2 27B measured |
| LMArena Text: Korean | Not measured | 1174 | Only Gemma 2 27B measured |
| LMArena Text: French | Not measured | 1248 | Only Gemma 2 27B measured |
| LMArena Text: Spanish | Not measured | 1228 | Only Gemma 2 27B measured |
| LMArena Text: Russian | Not measured | 1234 | Only Gemma 2 27B measured |
| LMArena Text: Polish | Not measured | 1277 | Only Gemma 2 27B measured |
| LMArena Text: multi-turn | Not measured | 1224 | Only Gemma 2 27B measured |
| LMArena Text: longer queries | Not measured | 1230 | Only Gemma 2 27B measured |
| LMArena Text: writing and language | Not measured | 1249 | Only Gemma 2 27B measured |
| LMArena Text: entertainment and media | Not measured | 1212 | Only Gemma 2 27B measured |
| Neither model has a result on the other 27 boards here | |||
Image generationDirectional onlyPublic boards, shown as published, kept out of the index3 boards measured
| Benchmark | Nano Banana 2 (Gemini 3.1 Flash Image Preview) | Gemma 2 27B | Leader |
|---|---|---|---|
| Design Arena: images | 1269 | Not measured | Only Nano Banana 2 (Gemini 3.1 Flash Image Preview) measured |
| Design Arena: graphic design | 1249 | Not measured | Only Nano Banana 2 (Gemini 3.1 Flash Image Preview) measured |
| Design Arena: logos | 1248 | Not measured | Only Nano Banana 2 (Gemini 3.1 Flash Image Preview) 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
Gemma 2 27B costs less
Repository review
50K input + 3K output tokens
Nano Banana 2 (Gemini 3.1 Flash Image Preview) costs less
Agent loop
200K input + 10K output tokens
Nano Banana 2 (Gemini 3.1 Flash Image Preview) 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 | Google Nano Banana 2 (Gemini 3.1 Flash Image Preview) | Google Gemma 2 27B |
|---|---|---|
| Maker | ||
| Weights | No public weights listed | Open weights |
| Released | February 26, 2026 | July 13, 2024 |
| Context window | 66K | 8K |
| Input $/Mtok | $0.50 | $0.65 |
| Output $/Mtok | $3.00 | $0.65 |
| 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 2 (Gemini 3.1 Flash Image Preview) better than Gemma 2 27B for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Nano Banana 2 (Gemini 3.1 Flash Image Preview) for a larger context window (66K against 8K tokens).
Which is cheaper, Nano Banana 2 (Gemini 3.1 Flash Image Preview) or Gemma 2 27B?
Nano Banana 2 (Gemini 3.1 Flash Image Preview) costs $0.50 per million input tokens and $3.00 per million output tokens; Gemma 2 27B costs $0.65 and $0.65. Cost per solved task is known for neither of them.
Which has the bigger context window, Nano Banana 2 (Gemini 3.1 Flash Image Preview) or Gemma 2 27B?
Nano Banana 2 (Gemini 3.1 Flash Image Preview), with 66K tokens against 8K.
Has any benchmark tested both Nano Banana 2 (Gemini 3.1 Flash Image Preview) and Gemma 2 27B?
No benchmark has tested both yet. Nano Banana 2 (Gemini 3.1 Flash Image Preview) has results on Design Arena: images, Design Arena: graphic design and Design Arena: logos; Gemma 2 27B on LMArena Text: coding, LMArena Text: software and IT and Epoch Capabilities Index. Compare them on price and context instead. Data as of October 21, 2026.