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Moonshot AI logo
Model A
Kimi K2.6

Moonshot AI

65.3/100

Supported · Public rank #43

90% interval 56.973.7

Kimi K2.6 vs Laguna S 2.1

Updated September 4, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.

Poolside logo
Model B
Laguna S 2.1

Poolside

Evidence status unavailable

90% interval unavailable

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.

4 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 S 2.1

    Laguna S 2.1 has the larger documented context window.

    Confidence: documented

  • Chat turn cost

    1K fresh input + 500 output tokens

    Laguna S 2.1

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

    Confidence: listed-rates

  • Cache-heavy agent loop cost

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

    Laguna S 2.1

    Laguna S 2.1 has the lower estimated token cost for this stated workload. Kimi K2.6 has no published cached-input rate, so cached tokens use its listed input rate.

    Confidence: rate-fallback

Show secondary and unsupported calls
  • Repository review cost

    50K fresh input + 3K output tokens

    Laguna S 2.1

    Laguna S 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 S 2.1 is scored on Estimated evidence for coding, so the reading is directional rather than like-for-like.

    Confidence: limited

  • Agentic work

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

    Not enough matched evidence

    Kimi K2.6 and Laguna S 2.1 are scored on Estimated evidence for agentic, so the reading is directional rather than like-for-like.

    Confidence: limited

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
4
Kimi K2.6 only
33
Laguna S 2.1 only
2
Like-for-like categories
0 / 8

2 categories rest on Estimated evidence or different evidence sets. Those rows remain visible for coverage context but do not name a winner.

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

Directional only
Kimi K2.6
46.1
Estimated · #88/151
Laguna S 2.1
48.2
Estimated · #77/151
Basis
BenchAlign lane · 12 vs 2 public rows
Reading
Directional only

Coding

Directional only
Kimi K2.6
51.6
Supported · #62/183
Laguna S 2.1
47.8
Estimated · #87/183
Basis
BenchAlign lane · 10 vs 4 public rows
Reading
Directional only

Reasoning

Not comparable
Kimi K2.6
Not ranked
Laguna S 2.1
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Knowledge

Not comparable
Kimi K2.6
61.7
Supported · #34/181
Laguna S 2.1
Not ranked
Basis
BenchAlign lane · 5 vs 0 public rows
Reading
Not comparable

Math

Not comparable
Kimi K2.6
71.3
#1/7
Laguna S 2.1
Not ranked
Basis
Provisional lane · 4 vs 0 weighted rows
Reading
Not comparable

Multilingual

Not comparable
Kimi K2.6
Not ranked
Laguna S 2.1
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Multimodal

Not comparable
Kimi K2.6
63.2
#26/48
Laguna S 2.1
Not ranked
Basis
Provisional lane · 2 vs 0 weighted rows
Reading
Not comparable

Instruction following

Not comparable
Kimi K2.6
Not ranked
Laguna S 2.1
Not ranked
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

Kimi K2.6
$0.00295
Fits in one request
Laguna S 2.1
$0.0002
Fits in one request

Laguna S 2.1 has the lower modeled cost

Costs use the listed standard API rates.

Repository review

50K fresh input + 3K output tokens

Kimi K2.6
$0.0595
Fits in one request
Laguna S 2.1
$0.0056
Fits in one request

Laguna S 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

Kimi K2.6
$0.249
Fits in one request
Cached input priced at the published list-input rate
Laguna S 2.1
$0.006
Fits in one request

Laguna S 2.1 has the lower modeled cost

Kimi K2.6 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.

Context window

Maximum documented context; output-token limits may be lower.

Kimi K2.6

256K

Laguna S 2.1

1M

API model ID

Kimi K2.6

Not sourced

Laguna S 2.1

Not sourced

Cached-input rate

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

Kimi K2.6

Not published

Laguna S 2.1

$0.01 per 1M cached input tokens

Documented inputs

Kimi K2.6

Not sourced

Laguna S 2.1

Not sourced

Documented outputs

Kimi K2.6

Not sourced

Laguna S 2.1

Not sourced

Provider availability

Kimi K2.6

Not sourced

Laguna S 2.1

Not sourced

Reasoning profile

Kimi K2.6

Reasoning

Laguna S 2.1

Reasoning

Weight access

Kimi K2.6

Open Weight

Laguna S 2.1

Open Weight

License

Kimi K2.6

Open Weight

Laguna S 2.1

Open Weight

Release date

Kimi K2.6

2026-04-20

Laguna S 2.1

2026-07-21

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: $0.0595 vs $0.0056. Cache-heavy agent loop: $0.249 vs $0.006.
Context tradeoff
Laguna S 2.1 has the larger documented window (1M).

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

Self-host vs API cost

Estimates at 50,000 req/day · 1000 tokens/req average.

Kimi K2.6
API / mo$3,713
Self-host / mo$18,221
Break-even326M/day
Laguna S 2.1
API / mo$225
Self-host / moNot listed
Break-even
Proprietary model — self-hosting not applicable.
Model the full break-even

Benchmark evidence

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

Browse raw public benchmark evidence39 rows

Agentic

  • Terminal-Bench 2.0

    Kimi K2.666.7%
    Source
    Laguna S 2.170.2%
    Source

    Laguna S 2.1 leads this result

  • BrowseComp

    Kimi K2.683.2%
    Source
    Laguna S 2.1

    Not directly comparable

  • OSWorld-Verified

    Kimi K2.673.1%
    Source
    Laguna S 2.1

    Not directly comparable

  • Toolathlon

    Kimi K2.650%
    Source
    Laguna S 2.1

    Not directly comparable

  • MCP Atlas

    Kimi K2.655.9%
    Source
    Laguna S 2.1

    Not directly comparable

  • Claw-Eval

    Kimi K2.662.3%
    Source
    Laguna S 2.1

    Not directly comparable

  • DeepSearchQA

    Kimi K2.692.5%
    Source
    Laguna S 2.1

    Not directly comparable

  • WideResearch

    Kimi K2.680.8%
    Source
    Laguna S 2.1

    Not directly comparable

  • Gert Labs

    Kimi K2.656.82%
    Source
    Laguna S 2.1

    Not directly comparable

  • ResearchClawBench

    Kimi K2.618.0%
    Source
    Laguna S 2.1

    Not directly comparable

  • OSWorld 2.0

    Kimi K2.64.6%
    Source
    Laguna S 2.1

    Not directly comparable

  • Terminal-Bench 2.1 (Vals)

    Kimi K2.653.6%
    Source
    Laguna S 2.1

    Not directly comparable

  • Toolathlon-Verified

    Kimi K2.6
    Laguna S 2.149.7%
    Source

    Not directly comparable

Coding

  • SWE-bench Verified

    Kimi K2.680.2%
    Source
    Laguna S 2.1

    Not directly comparable

  • LiveCodeBench v6

    Kimi K2.689.6%
    Source
    Laguna S 2.1

    Not directly comparable

  • SWE-bench Pro

    Kimi K2.658.6%
    Source
    Laguna S 2.159.4%
    Source

    Laguna S 2.1 leads this result

  • SWE Multilingual

    Kimi K2.676.7%
    Source
    Laguna S 2.178.5%
    Source

    Laguna S 2.1 leads this result

  • SciCode

    Kimi K2.652.2%
    Source
    Laguna S 2.1

    Not directly comparable

  • Terminal-Bench 2.0

    Kimi K2.666.7%
    Source
    Laguna S 2.170.2%
    Source

    Laguna S 2.1 leads this result

  • Vibe Code Bench

    Kimi K2.637.89%
    Source
    Laguna S 2.1

    Not directly comparable

  • cursorBench31

    Kimi K2.647.6%
    Source
    Laguna S 2.1

    Not directly comparable

  • LiveCodeBench (Vals)

    Kimi K2.686.8%
    Source
    Laguna S 2.1

    Not directly comparable

  • SWE-bench (Vals)

    Kimi K2.676.2%
    Source
    Laguna S 2.1

    Not directly comparable

  • deepSwe

    Kimi K2.6
    Laguna S 2.140.4%
    Source

    Not directly comparable

Knowledge

  • GPQA

    Kimi K2.690.5%
    Source
    Laguna S 2.1

    Not directly comparable

  • GPQA-D

    Kimi K2.690.5%
    Source
    Laguna S 2.1

    Not directly comparable

  • HLE

    Kimi K2.634.7%
    Source
    Laguna S 2.1

    Not directly comparable

  • GPQA Diamond (Vals)

    Kimi K2.689.1%
    Source
    Laguna S 2.1

    Not directly comparable

  • MMLU-Pro (Vals)

    Kimi K2.687.6%
    Source
    Laguna S 2.1

    Not directly comparable

Math

  • AIME26

    Kimi K2.696.4%
    Source
    Laguna S 2.1

    Not directly comparable

  • HMMT Feb 2026

    Kimi K2.692.7%
    Source
    Laguna S 2.1

    Not directly comparable

  • MMAnswerBench

    Kimi K2.686.0%
    Source
    Laguna S 2.1

    Not directly comparable

  • FrontierMath v2 (Tiers 1-3)

    Kimi K2.638.966%
    Source
    Laguna S 2.1

    Not directly comparable

  • FrontierMath v2 (Tier 4)

    Kimi K2.614.580%
    Source
    Laguna S 2.1

    Not directly comparable

Multimodal

  • MMMU-Pro

    Kimi K2.679.4%
    Source
    Laguna S 2.1

    Not directly comparable

  • MMMU-Pro w/ Python

    Kimi K2.680.1%
    Source
    Laguna S 2.1

    Not directly comparable

  • CharXiv

    Kimi K2.680.4%
    Source
    Laguna S 2.1

    Not directly comparable

  • MathVision

    Kimi K2.687.4%
    Source
    Laguna S 2.1

    Not directly comparable

  • V*

    Kimi K2.696.9%
    Source
    Laguna S 2.1

    Not directly comparable

Frequently asked questions

Which is better, Kimi K2.6 or Laguna S 2.1?

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, Kimi K2.6 or Laguna S 2.1?

Kimi K2.6 scores higher for coding on the public lane, 51.6 to 47.8. Laguna S 2.1 is scored on Estimated evidence for coding, so the reading is directional rather than like-for-like. BenchLM does not name a winner for coding from a directional reading; read the shared benchmark rows directly and test the models on the same task set.

Which is better for agentic tasks, Kimi K2.6 or Laguna S 2.1?

Laguna S 2.1 scores higher for agentic tasks on the public lane, 48.2 to 46.1. Kimi K2.6 and Laguna S 2.1 are scored on Estimated evidence for agentic tasks, so the reading is directional rather than like-for-like. BenchLM does not name a winner for agentic tasks from a directional reading; read the shared benchmark rows directly and test the models on the same task set.

Which costs less, Kimi K2.6 or Laguna S 2.1?

For the stated presets, chat costs $0.00295 on Kimi K2.6 and $0.0002 on Laguna S 2.1; repository review costs $0.0595 and $0.0056; the cache-heavy agent loop costs $0.249 and $0.006. Kimi K2.6 has no published cached-input rate, so cached tokens use its listed input rate.

Which has the larger context window, Kimi K2.6 or Laguna S 2.1?

Laguna S 2.1 has the larger documented context window: 1M, compared with 256K.

Related comparisons

Last updated September 4, 2026

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