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Model A
Laguna XS 2.1

Poolside

Evidence status unavailable

90% interval unavailable

Laguna XS 2.1 vs Qwen3.5 397B

Updated September 10, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.

Alibaba logo
Model B
Qwen3.5 397B

Alibaba

54.7/100

Estimated · Public rank #100

90% interval 43.266.2

Decision reading

At least one model is not scored in the current public ranking lane, so the page does not name an overall quality winner.

3 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.

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Which one for your work

Recommendations appear only when a shared evidence basis or an explicit operating constraint supports the call. Secondary and unsupported use cases stay disclosed below the initial list.

  • Long documents

    Prompts that approach the documented context limit

    Laguna XS 2.1

    Laguna XS 2.1 has the larger documented context window.

    Confidence: documented

  • Chat turn cost

    1K fresh input + 500 output tokens

    Laguna XS 2.1

    Laguna XS 2.1 has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates

Show secondary and unsupported calls
  • Repository review cost

    50K fresh input + 3K output tokens

    Laguna XS 2.1

    Laguna XS 2.1 has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates

  • Coding work

    Code generation, repair, and software-engineering tasks

    Not enough matched evidence

    Laguna XS 2.1 is not ranked on the public lane for coding, so no winner is named for coding.

    Confidence: limited

  • Agentic work

    Tool use, computer use, and multi-step task completion

    Not enough matched evidence

    Laguna XS 2.1 is not ranked on the public lane for agentic, so no winner is named for agentic.

    Confidence: limited

  • Cache-heavy agent loop cost

    200K cached + 20K fresh input + 10K output tokens

    Not enough matched evidence

    The page does not recommend a cost winner because at least one model cannot fit the stated workload in one request. Qwen3.5 397B does not fit this workload in one request. Qwen3.5 397B has no published cached-input rate, so cached tokens use its listed input rate.

    Confidence: rate-fallback

What is actually comparable

Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.

Shared results
3
Laguna XS 2.1 only
2
Qwen3.5 397B only
35
Like-for-like categories
0 / 8

Category results, on a stated basis

Each row shows the public-lane category score for both models: the BenchAlign lane for agentic, coding, and knowledge, and the weighted public rows elsewhere, with the same rank each model page reports. A row is like-for-like only when both scores rest on Supported evidence or the same weighted set. Directional and not-comparable rows remain visible, but they never receive a winner.

Agentic

Not comparable
Laguna XS 2.1
Not ranked
Qwen3.5 397B
46.8
Estimated · #71/152
Basis
BenchAlign lane · 1 vs 13 public rows
Reading
Not comparable

Coding

Not comparable
Laguna XS 2.1
Not ranked
Qwen3.5 397B
50.2
Estimated · #59/151
Basis
BenchAlign lane · 4 vs 3 public rows
Reading
Not comparable

Reasoning

Not comparable
Laguna XS 2.1
Not ranked
Qwen3.5 397B
59.8
Unranked · 2 rankable rows
Basis
Provisional lane · 0 vs 1 weighted rows
Reading
Not comparable

Knowledge

Not comparable
Laguna XS 2.1
Not ranked
Qwen3.5 397B
50.2
Estimated · #77/183
Basis
BenchAlign lane · 0 vs 6 public rows
Reading
Not comparable

Math

Not comparable
Laguna XS 2.1
Not ranked
Qwen3.5 397B
74.2
Unranked · 5 rankable rows
Basis
Provisional lane · 0 vs 2 weighted rows
Reading
Not comparable

Multilingual

Not comparable
Laguna XS 2.1
Not ranked
Qwen3.5 397B
69.7
#5/12
Basis
Provisional lane · 0 vs 1 weighted rows
Reading
Not comparable

Multimodal

Not comparable
Laguna XS 2.1
Not ranked
Qwen3.5 397B
63.0
#27/48
Basis
Provisional lane · 0 vs 2 weighted rows
Reading
Not comparable

Instruction following

Not comparable
Laguna XS 2.1
Not ranked
Qwen3.5 397B
0.0
#123/123
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Ranks count the models scored in each category’s lane, so the agentic, coding, and knowledge denominators (BenchAlign) differ from the provisional-lane categories. Unranked scores sit on the lane’s scale but never name a winner. Like-for-like rows within 0.5 points read as a practical tie.

Shape of the matched evidence

Only shared public evidence is shown. Sparse evidence stays a ruled list rather than being closed into a radar shape.

Too few matched category axes support a radar. The ruled list below shows only shared benchmark results; positions use each benchmark’s normalized display scale when available.

What each workload costs

Three fixed token mixes turn per-token rates into comparable decisions. Each scenario states context fit and whether cached input had to fall back to the published list-input rate.

Chat turn

1K fresh input + 500 output tokens

Laguna XS 2.1
$0.0002
Fits in one request
Qwen3.5 397B
$0.0024
Fits in one request

Laguna XS 2.1 has the lower modeled cost

Costs use the listed standard API rates.

Repository review

50K fresh input + 3K output tokens

Laguna XS 2.1
$0.0056
Fits in one request
Qwen3.5 397B
$0.0408
Fits in one request

Laguna XS 2.1 has the lower modeled cost

Costs use the listed standard API rates.

Cache-heavy agent loop

200K cached + 20K fresh input + 10K output tokens

Laguna XS 2.1
$0.014
Fits in one request
Qwen3.5 397B
$0.168
Does not fit in one request
Cached input priced at the published list-input rate

Qwen3.5 397B does not fit this workload in one request. Qwen3.5 397B has no published cached-input rate, so cached tokens use its listed input rate.

Specification differences

Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.

Cached-input rate

A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.

Laguna XS 2.1

$0.05 per 1M cached input tokens

Poolside Laguna XS 2.1 launch post

Qwen3.5 397B

Not published

Documented inputs

Laguna XS 2.1

Not sourced

Qwen3.5 397B

Not sourced

Documented outputs

Laguna XS 2.1

Not sourced

Qwen3.5 397B

Not sourced

Provider availability

Laguna XS 2.1

Not sourced

Qwen3.5 397B

Not sourced

Reasoning profile

Laguna XS 2.1

Reasoning

Qwen3.5 397B

Non-Reasoning

Weight access

Laguna XS 2.1

Open Weight

Qwen3.5 397B

Open Weight

License

Laguna XS 2.1

Open Weight

Qwen3.5 397B

Open Weight

Release date

Laguna XS 2.1

2026-07-02

Qwen3.5 397B

2026-02-16

If you already use one of these models
Deployment change
The models list different providers, so authentication, endpoint behavior, limits, and feature support may change.
Quality signal
At least one model is not scored in the current public ranking lane, so the page does not name an overall quality winner.
Workload cost
Repository review: $0.0056 vs $0.0408. Cache-heavy agent loop: $0.014 vs $0.168.
Context tradeoff
Laguna XS 2.1 has the larger documented window (262K).

Run the same representative tasks against both endpoints before changing production traffic.

Benchmark evidence

The full public result ledger is available for audit without forcing a wide desktop table onto a phone.

Browse raw public benchmark evidence40 rows

Agentic

  • Terminal-Bench 2.0

    Laguna XS 2.137.5%
    Source
    Qwen3.5 397B52.5%
    Source

    Qwen3.5 397B leads this result

  • BrowseComp

    Laguna XS 2.1
    Qwen3.5 397B62%
    Source

    Not directly comparable

  • Claw-Eval

    Laguna XS 2.1
    Qwen3.5 397B56.8%
    Source

    Not directly comparable

  • QwenClawBench

    Laguna XS 2.1
    Qwen3.5 397B51.8%
    Source

    Not directly comparable

  • τ³-bench results

    Laguna XS 2.1
    Qwen3.5 397B68.4%
    Source

    Not directly comparable

  • VITA-Bench

    Laguna XS 2.1
    Qwen3.5 397B43.7%
    Source

    Not directly comparable

  • DeepPlanning

    Laguna XS 2.1
    Qwen3.5 397B37.6%
    Source

    Not directly comparable

  • Toolathlon

    Laguna XS 2.1
    Qwen3.5 397B36.3%
    Source

    Not directly comparable

  • MCP Atlas

    Laguna XS 2.1
    Qwen3.5 397B46.1%
    Source

    Not directly comparable

  • MCP-Tasks

    Laguna XS 2.1
    Qwen3.5 397B74.2%
    Source

    Not directly comparable

  • WideResearch

    Laguna XS 2.1
    Qwen3.5 397B74.0%
    Source

    Not directly comparable

  • Gert Labs

    Laguna XS 2.1
    Qwen3.5 397B46.76%
    Source

    Not directly comparable

  • ResearchClawBench

    Laguna XS 2.1
    Qwen3.5 397B14.2%
    Source

    Not directly comparable

Coding

  • SWE-bench Verified

    Laguna XS 2.170.9%
    Source
    Qwen3.5 397B76.2%
    Source

    Qwen3.5 397B leads this result

  • SWE Multilingual

    Laguna XS 2.163.1%
    Source
    Qwen3.5 397B

    Not directly comparable

  • SWE-bench Pro

    Laguna XS 2.147.6%
    Source
    Qwen3.5 397B50.9%
    Source

    Qwen3.5 397B leads this result

  • Terminal-Bench 2.0

    Laguna XS 2.137.5%
    Source
    Qwen3.5 397B

    Not directly comparable

  • LiveCodeBench v6

    Laguna XS 2.1
    Qwen3.5 397B83.6%
    Source

    Not directly comparable

Reasoning

  • LongBench v2

    Laguna XS 2.1
    Qwen3.5 397B63.2%
    Source

    Not directly comparable

  • AI-Needle

    Laguna XS 2.1
    Qwen3.5 397B68.7%
    Source

    Not directly comparable

Knowledge

  • GPQA

    Laguna XS 2.1
    Qwen3.5 397B88.4%
    Source

    Not directly comparable

  • SuperGPQA

    Laguna XS 2.1
    Qwen3.5 397B70.4%
    Source

    Not directly comparable

  • MMLU-Pro

    Laguna XS 2.1
    Qwen3.5 397B87.8%
    Source

    Not directly comparable

  • MMLU-Redux

    Laguna XS 2.1
    Qwen3.5 397B94.9%
    Source

    Not directly comparable

  • C-Eval

    Laguna XS 2.1
    Qwen3.5 397B93%
    Source

    Not directly comparable

  • HLE

    Laguna XS 2.1
    Qwen3.5 397B28.7%
    Source

    Not directly comparable

Math

  • AIME26

    Laguna XS 2.1
    Qwen3.5 397B93.3%
    Source

    Not directly comparable

  • HMMT Feb 2025

    Laguna XS 2.1
    Qwen3.5 397B94.8%
    Source

    Not directly comparable

  • HMMT Nov 2025

    Laguna XS 2.1
    Qwen3.5 397B92.7%
    Source

    Not directly comparable

  • HMMT Feb 2026

    Laguna XS 2.1
    Qwen3.5 397B87.9%
    Source

    Not directly comparable

  • MMAnswerBench

    Laguna XS 2.1
    Qwen3.5 397B80.9%
    Source

    Not directly comparable

Multilingual

  • MMLU-ProX

    Laguna XS 2.1
    Qwen3.5 397B84.7%
    Source

    Not directly comparable

  • NOVA-63

    Laguna XS 2.1
    Qwen3.5 397B59.1%
    Source

    Not directly comparable

Multimodal

  • MMMU-Pro

    Laguna XS 2.1
    Qwen3.5 397B79%
    Source

    Not directly comparable

  • MathVision

    Laguna XS 2.1
    Qwen3.5 397B88.6%
    Source

    Not directly comparable

  • CharXiv

    Laguna XS 2.1
    Qwen3.5 397B80.8%
    Source

    Not directly comparable

  • VideoMMMU

    Laguna XS 2.1
    Qwen3.5 397B84.7%
    Source

    Not directly comparable

  • ScreenSpot Pro

    Laguna XS 2.1
    Qwen3.5 397B65.6%
    Source

    Not directly comparable

  • V*

    Laguna XS 2.1
    Qwen3.5 397B95.8%
    Source

    Not directly comparable

Instruction following

  • IFEval

    Laguna XS 2.1
    Qwen3.5 397B92.6%
    Source

    Not directly comparable

Frequently asked questions

Which is better, Laguna XS 2.1 or Qwen3.5 397B?

At least one model is not scored in the current public ranking lane, so the page does not name an overall quality winner. The page therefore keeps the decision tied to the specific documented workload.

Which is better for coding, Laguna XS 2.1 or Qwen3.5 397B?

Laguna XS 2.1 is not ranked on the public lane for coding, so no winner is named for coding.

Which is better for agentic tasks, Laguna XS 2.1 or Qwen3.5 397B?

Laguna XS 2.1 is not ranked on the public lane for agentic tasks, so no winner is named for agentic tasks.

Which costs less, Laguna XS 2.1 or Qwen3.5 397B?

For the stated presets, chat costs $0.0002 on Laguna XS 2.1 and $0.0024 on Qwen3.5 397B; repository review costs $0.0056 and $0.0408; the cache-heavy agent loop costs $0.014 and $0.168. Qwen3.5 397B does not fit this workload in one request. Qwen3.5 397B has no published cached-input rate, so cached tokens use its listed input rate.

Which has the larger context window, Laguna XS 2.1 or Qwen3.5 397B?

Laguna XS 2.1 has the larger documented context window: 262K, compared with 128K.

Related comparisons

Last updated September 10, 2026

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