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Laguna XS 2.1 vs Step 3.7 Flash

Laguna XS 2.1 costs 9.6x less per output token than Step 3.7 Flash ($0.12 vs $1.15 per million). Updated October 21, 2026; no benchmark has tested both models yet.

Replace Laguna XS 2.1 Replace Step 3.7 Flash
P Laguna XS 2.1Poolside
Coding
No data
Overall
No data
Output $/M
$0.12
Step 3.7 FlashStepFun
Coding
No data
Overall
19.5
Output $/M
$1.15
vs $0.12 vs $1.15 per 1M output tokens. Laguna XS 2.1 is 9.6x cheaper.

Laguna XS 2.1 or Step 3.7 Flash: which to pick

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

Pick Laguna XS 2.1 for output tokens 9.6x cheaper ($0.12 vs $1.15 per million).

Model ALaguna XS 2.1PoolsideNot benchmarkedNo coding benchmarkNo cost per solved taskModel BStep 3.7 FlashStepFunNot benchmarkedNo coding benchmarkNo cost per solved task

No benchmark has tested both yet. Laguna XS 2.1 has none yet; Step 3.7 Flash on AA Coding Index, SciCode and Terminal-Bench Hard (Artificial Analysis run). 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
Laguna XS 2.1 not benchmarked, Step 3.7 Flash 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
Laguna XS 2.1 $0.12 against Step 3.7 Flash $1.15 per million output tokens, 9.6x apart.
Context window
Both take 262K 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.

CodingDirectional onlySix of these boards feed the Vibe Coding Index4 boards measured
Coding benchmarks for Laguna XS 2.1 and Step 3.7 Flash
BenchmarkLaguna XS 2.1Step 3.7 FlashLeader
AA Coding IndexNot measured39.6Only Step 3.7 Flash measured
SciCodeNot measured43.9%Only Step 3.7 Flash measured
Terminal-Bench Hard (Artificial Analysis run)Not measured35.6%Only Step 3.7 Flash measured
ALE-BenchNot measured694.1Only Step 3.7 Flash measured
Neither model has a result on the other 34 boards here
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index1 board measured
Intelligence benchmarks for Laguna XS 2.1 and Step 3.7 Flash
BenchmarkLaguna XS 2.1Step 3.7 FlashLeader
AA Intelligence IndexNot measured19.5Only Step 3.7 Flash 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 Laguna XS 2.1 and Step 3.7 Flash
BenchmarkLaguna XS 2.1Step 3.7 FlashLeader
τ²-Bench TelecomNot measured98.5%Only Step 3.7 Flash measured
Neither model has a result on the other 38 boards here
ReasoningDirectional onlyPublic boards, shown as published, kept out of the index2 boards measured
Reasoning benchmarks for Laguna XS 2.1 and Step 3.7 Flash
BenchmarkLaguna XS 2.1Step 3.7 FlashLeader
GPQA Diamond (Artificial Analysis run)Not measured80.9%Only Step 3.7 Flash measured
Humanity's Last Exam (Artificial Analysis run)Not measured21.4%Only Step 3.7 Flash measured
Neither model has a result on the other 19 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards measured
Web design benchmarks for Laguna XS 2.1 and Step 3.7 Flash
BenchmarkLaguna XS 2.1Step 3.7 FlashLeader
Design Arena: websitesNot measured1196Only Step 3.7 Flash measured
Design Arena: UI componentsNot measured1179Only Step 3.7 Flash measured
Design Arena: game devNot measured1158Only Step 3.7 Flash measured
Design Arena: data vizNot measured1172Only Step 3.7 Flash measured
Design Arena: 3DNot measured1129Only Step 3.7 Flash measured
Design Arena: all code categoriesNot measured1182Only Step 3.7 Flash measured
Design Arena: SVGNot measured1085Only Step 3.7 Flash measured
Design Arena: ASCII artNot measured1152Only Step 3.7 Flash measured
Neither model has a result on the other 1 board here
GeneralDirectional onlyPublic boards, shown as published, kept out of the index2 boards measured
General benchmarks for Laguna XS 2.1 and Step 3.7 Flash
BenchmarkLaguna XS 2.1Step 3.7 FlashLeader
IFBenchNot measured67.3%Only Step 3.7 Flash measured
Long context reasoning (AA-LCR)Not measured73.7%Only Step 3.7 Flash measured
Neither model has a result on the other 44 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

Laguna XS 2.1$0.0001Fits in one request
Step 3.7 Flash$0.0008Fits in one request

Laguna XS 2.1 costs less

Repository review

50K input + 3K output tokens

Laguna XS 2.1$0.0034Fits in one request
Step 3.7 Flash$0.013Fits in one request

Laguna XS 2.1 costs less

Agent loop

200K input + 10K output tokens

Laguna XS 2.1$0.013Fits in one request
Step 3.7 Flash$0.051Fits in one request

Laguna XS 2.1 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 Laguna XS 2.1 and Step 3.7 Flash
SpecificationPoolside Laguna XS 2.1StepFun Step 3.7 Flash
MakerPoolsideStepFun
WeightsOpen weightsOpen weights
ReleasedJuly 2, 2026May 28, 2026
Context window262K262K
Input $/Mtok$0.06$0.20
Output $/Mtok$0.12$1.15
Coding indexNot benchmarkedNot benchmarked
Independent measurements behind it00
Cost per solved taskNot computableNot computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Laguna XS 2.1 better than Step 3.7 Flash for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Laguna XS 2.1 for output tokens 9.6x cheaper ($0.12 vs $1.15 per million).

Which is cheaper, Laguna XS 2.1 or Step 3.7 Flash?

Laguna XS 2.1 costs $0.06 per million input tokens and $0.12 per million output tokens; Step 3.7 Flash costs $0.20 and $1.15. Cost per solved task is known for neither of them.

Which has the bigger context window, Laguna XS 2.1 or Step 3.7 Flash?

Neither: both take 262K tokens.

Has any benchmark tested both Laguna XS 2.1 and Step 3.7 Flash?

No benchmark has tested both yet. Laguna XS 2.1 has none yet; Step 3.7 Flash on AA Coding Index, SciCode and Terminal-Bench Hard (Artificial Analysis run). Compare them on price and context instead. Data as of October 21, 2026.

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