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Devstral 2 2512 vs Nano Banana 2.1

Devstral 2 2512 costs 3.8x less per output token than Nano Banana 2.1 ($2.00 vs $7.50 per million). Updated October 22, 2026; no benchmark has tested both models yet.

Replace Devstral 2 2512 Replace Nano Banana 2.1
Devstral 2 2512Mistral AI
Coding
No data
Overall
No data
Output $/M
$2.00
Nano Banana 2.1Google
Coding
No data
Overall
No data
Output $/M
$7.50
vs $2.00 vs $7.50 per 1M output tokens. Devstral 2 2512 is 3.8x cheaper.

Devstral 2 2512 or Nano Banana 2.1: which to pick

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

Pick Devstral 2 2512 for output tokens 3.8x cheaper ($2.00 vs $7.50 per million) and a larger context window (262K against 66K tokens).

Model ADevstral 2 2512Mistral AINot benchmarked1 independent benchmark$1.19 per solved taskModel BNano Banana 2.1GoogleNot benchmarkedNo coding benchmarkNo cost per solved task

No benchmark has tested both yet. Devstral 2 2512 has results on SWE-bench Verified, AA Coding Index and LiveCodeBench (Vals AI); Nano Banana 2.1 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.

At a glance

Coding index
Devstral 2 2512 not benchmarked, Nano Banana 2.1 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
Devstral 2 2512 $2.00 against Nano Banana 2.1 $7.50 per million output tokens, 3.8x apart.
Context window
Devstral 2 2512 takes 262K tokens, Nano Banana 2.1 66K.

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 Index4 boards measured
Coding benchmarks for Devstral 2 2512 and Nano Banana 2.1
BenchmarkDevstral 2 2512Nano Banana 2.1Leader
SWE-bench Verified53.8%Not measuredOnly Devstral 2 2512 measured
AA Coding Index31.3Not measuredOnly Devstral 2 2512 measured
LiveCodeBench (Vals AI)51.8%Not measuredOnly Devstral 2 2512 measured
SWE-bench Verified (Vals AI)62.8%Not measuredOnly Devstral 2 2512 measured
Neither model has a result on the other 35 boards here
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index1 board measured
Intelligence benchmarks for Devstral 2 2512 and Nano Banana 2.1
BenchmarkDevstral 2 2512Nano Banana 2.1Leader
AA Intelligence Index8.6Not measuredOnly Devstral 2 2512 measured
Neither model has a result on the other 1 board here
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index1 board measured
Agentic work benchmarks for Devstral 2 2512 and Nano Banana 2.1
BenchmarkDevstral 2 2512Nano Banana 2.1Leader
AA Agentic Index2.3Not measuredOnly Devstral 2 2512 measured
Neither model has a result on the other 40 boards here
Image generationDirectional onlyPublic boards, shown as published, kept out of the index5 boards measured
Image generation benchmarks for Devstral 2 2512 and Nano Banana 2.1
BenchmarkDevstral 2 2512Nano Banana 2.1Leader
Design Arena: imagesNot measured1293Only Nano Banana 2.1 measured
Design Arena: graphic designNot measured1333Only Nano Banana 2.1 measured
Design Arena: logosNot measured1277Only Nano Banana 2.1 measured
LMArena Text to ImageNot measured1328Only Nano Banana 2.1 measured
LMArena Image EditNot measured1426Only Nano Banana 2.1 measured

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

Devstral 2 2512$0.0014Fits in one request
Nano Banana 2.1$0.0053Fits in one request

Devstral 2 2512 costs less

Repository review

50K input + 3K output tokens

Devstral 2 2512$0.026Fits in one request
Nano Banana 2.1$0.098Fits in one request

Devstral 2 2512 costs less

Agent loop

200K input + 10K output tokens

Devstral 2 2512$0.100Fits in one request
Nano Banana 2.1$0.375Exceeds the context window

Devstral 2 2512 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 Devstral 2 2512 and Nano Banana 2.1
SpecificationMistral Devstral 2 2512Google Nano Banana 2.1
MakerMistral AIGoogle
WeightsOpen weightsNo public weights listed
ReleasedDecember 9, 2025October 6, 2026
Context window262K66K
Input $/Mtok$0.40$1.50
Output $/Mtok$2.00$7.50
Coding indexNot benchmarkedNot benchmarked
Independent measurements behind it10
Cost per solved task$1.19Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Devstral 2 2512 better than Nano Banana 2.1 for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Devstral 2 2512 for output tokens 3.8x cheaper ($2.00 vs $7.50 per million) and a larger context window (262K against 66K tokens).

Which is cheaper, Devstral 2 2512 or Nano Banana 2.1?

Devstral 2 2512 costs $0.40 per million input tokens and $2.00 per million output tokens; Nano Banana 2.1 costs $1.50 and $7.50. Cost per solved task is known for Devstral 2 2512 only.

Which has the bigger context window, Devstral 2 2512 or Nano Banana 2.1?

Devstral 2 2512, with 262K tokens against 66K.

Has any benchmark tested both Devstral 2 2512 and Nano Banana 2.1?

No benchmark has tested both yet. Devstral 2 2512 has results on SWE-bench Verified, AA Coding Index and LiveCodeBench (Vals AI); Nano Banana 2.1 on Design Arena: images, Design Arena: graphic design and Design Arena: logos. Compare them on price and context instead. Data as of October 22, 2026.

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