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Precision Benchmarks

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© 2026 CompareLLM. Public benchmark data aggregated from Arena Elo, LiveBench, SWE-bench & OpenRouter.

Every score has a dated snapshot.

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  2. Comparisons
  3. MoonshotAI: Kimi K2.5 vs Poolside: Laguna XS 2.1

Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)

MoonshotAI: Kimi K2.5 vs Poolside: Laguna XS 2.1 benchmark

In this head-to-head showdown, Poolside: Laguna XS 2.1 is more budget-friendly at $0.12/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Choose MoonshotAI: Kimi K2.5 if your priority is peak reasoning, complex code generation, and top preference Elo. Choose Poolside: Laguna XS 2.1 if you are optimizing for low latency, high throughput, and cost-efficient API deployment.
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Executive Verdict Summary

Poolside: Laguna XS 2.1 holds empirical advantage (2 of 2 metrics)

Coding / SWESWE-bench
MoonshotAI: Kimi K2.5Top code solve rate
ReasoningGPQA / Live
MoonshotAI: Kimi K2.5Top logical accuracy
Best Value$/1M Tok
Poolside: Laguna XS 2.1Lowest API billing cost
Speed / TokTok/Sec
MoonshotAI: Kimi K2.5Fastest stream rate

Verified Advantage Breakdown

2 benchmarks evaluated across capability, speed, and cost

MoonshotAI: Kimi K2.5 (0)Poolside: Laguna XS 2.1 (2)
MoonshotAI: Kimi K2.5
0 of 2 Wins
Competitive baseline across remaining benchmarks
Poolside: Laguna XS 2.1
2 of 2 Wins
✓Input price✓Output price
Moonshot
MoonshotAI: Kimi K2.5

Auto-discovered from OpenRouter (moonshotai/kimi-k2.5). Preview until a second source matches.

K2.5 MaxElo 1,515In: $0.57 · Out: $2.85/1M
poolside
Leads 2 of 2
Poolside: Laguna XS 2.1

Auto-discovered from OpenRouter (poolside/laguna-xs-2.1). Preview until a second source matches.

In: $0.06 · Out: $0.12/1M

Kimi Series Lineage & Sibling Variants

4 models

Currently comparing MoonshotAI: Kimi K2.5 vs Poolside: Laguna XS 2.1. Alternative family tiers available.

Active: MoonshotAI: Kimi K2.5
Kimi K3$15MoonshotAI: Kimi K2 0711$2.3Kimi Chat 1.5$0.8

MoonshotAI: Kimi K2.5 Thinking Depth & Cost Scaler

Model A

Simulate accuracy gains vs added response time & token cost

Mode: Medium (Deep Reasoning)

Reasoning models “think before answering” by generating internal reasoning tokens. Higher effort improves math, coding, and logic accuracy, but increases response delay and token costs.

Delay
270 ms
Standard
CoT Tokens
~2,500
Internal reasoning
Cost / 1k
$8.27
7.3× base bill
Accuracy Boost
+5.5%
STEM & Logic
Top Rival Showdowns for MoonshotAI: Kimi K2.5
All Matchups
Compare vs:vs Claude Opus 4.5vs GPT-5vs Gemini 3 Provs Grok 4.6vs DeepSeek V4 Pro
Preference Leader

No shared data

Single model data

Throughput Leader

No shared data

No latency data

Value per Dollar LeaderPoolside: Laguna XS 2.1 Wins

Poolside: Laguna XS 2.1

$0.12 / 1M output

Capability Percentiles

Relative percentile scores computed across all active models in the benchmark catalog.

Multi-Dimensional Capability Radar

Leaders Matchup Capability Radar

Comparing top standard models across 6 key capability dimensions. Tap any spoke or dot to inspect.

Tap any node to inspect
0–100 %ile

Overall Matchup Breakdown

Category wins across reasoning intelligence, generation speed, and token cost.

MoonshotAI: Kimi K2.5 (7)vsPoolside: Laguna XS 2.1 (2)
MoonshotAI: Kimi K2.5: 7W (78%)Overall: MoonshotAI: Kimi K2.5Poolside: Laguna XS 2.1: 2W (22%)
← MoonshotAI: Kimi K2.51 tiesPoolside: Laguna XS 2.1 →
🏆MoonshotAI: Kimi K2.5 Leads(5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Benchmark
MoonshotAI: Kimi K2.5vsPoolside: Laguna XS 2.1
Preference Elo
1,515vs—
Coding Elo
1,520vs—
SWE-bench
71.3%vs—
LiveBench
67.2%vs—
GPQA Diamond
87.6%vs—
MoonshotAI: Kimi K2.5: 5WPoolside: Laguna XS 2.1: 0W
🏆MoonshotAI: Kimi K2.5 Leads(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
MoonshotAI: Kimi K2.5vsPoolside: Laguna XS 2.1
Output speed
72 tok/svs—
Time to first token
270 msvs—
MoonshotAI: Kimi K2.5: 2WPoolside: Laguna XS 2.1: 0W
🏆Poolside: Laguna XS 2.1 Leads(2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
MoonshotAI: Kimi K2.5vsPoolside: Laguna XS 2.1
Output price
$2.85/1Mvs$0.12/1M+$2.73/1M
Input price
$0.57/1Mvs$0.06/1M+$0.51/1M
Context window
262kvs262k
MoonshotAI: Kimi K2.5: 0WPoolside: Laguna XS 2.1: 2W

Side-by-Side Benchmark Matrix

MoonshotAI: Kimi K2.5Poolside: Laguna XS 2.1
Preference Elo
MoonshotAI: Kimi K2.51,515
Poolside: Laguna XS 2.1—
Coding Elo
MoonshotAI: Kimi K2.51,520
Poolside: Laguna XS 2.1—
LiveBench
MoonshotAI: Kimi K2.567.2%
Poolside: Laguna XS 2.1—
SWE-bench
MoonshotAI: Kimi K2.571.3%
Poolside: Laguna XS 2.1—
GPQA Diamond
MoonshotAI: Kimi K2.587.6%
Poolside: Laguna XS 2.1—
Time to first token
MoonshotAI: Kimi K2.5270 ms
Poolside: Laguna XS 2.1—
Output speed
MoonshotAI: Kimi K2.572 tok/s
Poolside: Laguna XS 2.1—
Input pricePoolside: Laguna XS 2.1 +$0.51/1M
MoonshotAI: Kimi K2.5$0.57/1M
Poolside: Laguna XS 2.1$0.06/1M
Output pricePoolside: Laguna XS 2.1 +$2.73/1M
MoonshotAI: Kimi K2.5$2.85/1M
Poolside: Laguna XS 2.1$0.12/1M
Context window
MoonshotAI: Kimi K2.5262k
Poolside: Laguna XS 2.1262k
BenchmarkMoonshotAI: Kimi K2.5Poolside: Laguna XS 2.1Advantage Delta
Preference Elo
1,515
lmarena · Aug 17, 2026
——
Coding Elo
1,520
lmarena · Aug 17, 2026
——
LiveBench
67.2%
livebench · Aug 17, 2026
——
SWE-bench
71.3%
swebench · Aug 17, 2026
——
GPQA Diamond
87.6%
seed-bootstrap · Aug 1, 2026
——
Time to first token
270 ms
seed-bootstrap · Aug 1, 2026
——
Output speed
72 tok/s
seed-bootstrap · Aug 1, 2026
——
Input price
$0.57/1M
openrouter · Aug 17, 2026
$0.06/1M
openrouter · Aug 17, 2026
+$0.51/1M
Output price
$2.85/1M
openrouter · Aug 17, 2026
$0.12/1M
openrouter · Aug 17, 2026
+$2.73/1M
Context window
262k
openrouter · Aug 17, 2026
262k
openrouter · Aug 17, 2026
—

Workload Cost & Savings Calculator

Simulate monthly production API costs in USD (US Dollar).

Save 94% with Poolside: Laguna XS 2.1
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
MoonshotAI: Kimi K2.5$62.70 / mo
In: $19.95Out: $42.75
Poolside: Laguna XS 2.1$3.90 / mo
In: $2.1Out: $1.8
Estimated Cost Delta

Poolside: Laguna XS 2.1 is estimated to save $58.80/month ($706/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Poolside: Laguna XS 2.1:Pick Poolside: Laguna XS 2.1 when you are optimizing output cost.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatPoolside: Laguna XS 2.1

Lower output list price ($0.12/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGMoonshotAI: Kimi K2.5

Larger window (262k).

Screenshots / visionMoonshotAI: Kimi K2.5

MoonshotAI: Kimi K2.5 is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatPoolside: Laguna XS 2.1Lower output list price ($0.12/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGMoonshotAI: Kimi K2.5Larger window (262k).
Screenshots / visionMoonshotAI: Kimi K2.5MoonshotAI: Kimi K2.5 is the side marked multimodal in the catalog.

Cast Your Matchup Vote

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
Moonshot

MoonshotAI: Kimi K2.5

Elo 1,515
SWE-bench71.3%
Speed (tok/s)72 tok/s
Input / 1M Tokens$0.57/1M
Output / 1M Tokens$2.85/1M
poolside

Poolside: Laguna XS 2.1

Elo n/a
SWE-bench—
Speed (tok/s)262k
Input / 1M Tokens$0.06/1M
Output / 1M Tokens$0.12/1M

Frequently Asked Questions

Which is better overall, MoonshotAI: Kimi K2.5 or Poolside: Laguna XS 2.1?
We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.
Which is better at coding, MoonshotAI: Kimi K2.5 or Poolside: Laguna XS 2.1?
SWE-bench is missing for at least one model, so we do not rank coding from a single number.
Which is cheaper to run in production?
Poolside: Laguna XS 2.1 output tokens are $0.12/1M versus $2.85/1M. Input prices and retry rates still move the real bill.
Which is faster, MoonshotAI: Kimi K2.5 or Poolside: Laguna XS 2.1?
We do not have TTFT for both models.
Which has the larger context window?
MoonshotAI: Kimi K2.5 accepts 262k tokens versus 262k.
Can I self-host either model?
Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?
No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?
Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. MoonshotAI: Kimi K2.5 and Poolside: Laguna XS 2.1 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All MoonshotAI: Kimi K2.5 matchups →|All Poolside: Laguna XS 2.1 matchups →
MoonshotAI: Kimi K2.5 vs MoonshotAI: Kimi K2 0711 (previous kimi)MoonshotAI: Kimi K2.5 vs Kimi K3 (next kimi)Qwen 3 Max vs MoonshotAI: Kimi K2.5Claude Sonnet 4.5 vs MoonshotAI: Kimi K2.5Gemini 3.6 Flash vs MoonshotAI: Kimi K2.5Kimi Chat 1.5 vs MoonshotAI: Kimi K2.5