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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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  3. Google: Gemini 3.1 Flash Lite Preview vs MoonshotAI: Kimi K2.5

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

Google: Gemini 3.1 Flash Lite Preview vs MoonshotAI: Kimi K2.5 benchmark

In this head-to-head showdown, Google: Gemini 3.1 Flash Lite Preview is more budget-friendly at $1.5/1M 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: Both Google: Gemini 3.1 Flash Lite Preview and MoonshotAI: Kimi K2.5 present distinct architectural strengths. Compare the verified benchmark matrix below to choose the model tailored to your specific application requirements.
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Google
Google: Gemini 3.1 Flash Lite Preview

Auto-discovered from OpenRouter (google/gemini-3.1-flash-lite-preview). Preview until a second source matches.

$1.5/1M out
Moonshot
MoonshotAI: Kimi K2.5

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

K2.5 MaxElo 1,515$2.8499999999999996/1M out

MoonshotAI: Kimi K2.5 Thinking Depth & Cost Scaler

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.

Thinking Delay
270 ms
Standard speed
Reasoning Depth
~2,500
Internal tokens
Cost / 1k Calls
$8.27
7.3× standard bill
Accuracy Boost
+5.5% accuracy
STEM & SWE-bench
Top Rival Showdowns for Google: Gemini 3.1 Flash Lite Preview
All Matchups
Compare vs:vs Claude Opus 4.5vs GPT-5vs Grok 4.6vs DeepSeek V4 Provs Qwen 3 Max
Preference Leader

No shared data

Single model data

Throughput Leader

No shared data

No latency data

Value per Dollar Leader

Google: Gemini 3.1 Flash Lite Preview

$1.5 / 1M output

Capability Percentiles

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

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect
Percentile 0–100
Dimensional AdvantageMoonshotAI: Kimi K2.5 4/6
Head-to-Head Comparison

Overall Matchup Breakdown

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

Google: Gemini 3.1 Flash Lite Preview (3)vsMoonshotAI: Kimi K2.5 (7)
Google: Gemini 3.1 Flash Lite Preview: 3W (30%)Overall: MoonshotAI: Kimi K2.5MoonshotAI: Kimi K2.5: 7W (70%)
← Google: Gemini 3.1 Flash Lite PreviewMoonshotAI: Kimi K2.5 →
MoonshotAI: Kimi K2.5 (5/5)

Intelligence & Reasoning

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

Preference Elo
—vs1,515
Coding Elo
—vs1,520
SWE-bench
—vs71.3%
LiveBench
—vs67.2%
GPQA Diamond
—vs87.6%
Google: Gemini 3.1 Flash Lite Preview: 0WMoonshotAI: Kimi K2.5: 5W
MoonshotAI: Kimi K2.5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed
—vs72 tok/s
Time to first token
—vs270 ms
Google: Gemini 3.1 Flash Lite Preview: 0WMoonshotAI: Kimi K2.5: 2W
Google: Gemini 3.1 Flash Lite Preview (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price
$1.5/1Mvs$2.85/1M
Input price
$0.25/1Mvs$0.57/1M
Context window
1Mvs262k
Google: Gemini 3.1 Flash Lite Preview: 3WMoonshotAI: Kimi K2.5: 0W

Side-by-Side Benchmark Matrix

Preference Elo
Google: Gemini 3.1 Flash Lite Preview—
MoonshotAI: Kimi K2.51,515
lmarena · Aug 17, 2026
Coding Elo
Google: Gemini 3.1 Flash Lite Preview—
MoonshotAI: Kimi K2.51,520
lmarena · Aug 17, 2026
LiveBench
Google: Gemini 3.1 Flash Lite Preview—
MoonshotAI: Kimi K2.567.2%
livebench · Aug 17, 2026
SWE-bench
Google: Gemini 3.1 Flash Lite Preview—
MoonshotAI: Kimi K2.571.3%
swebench · Aug 17, 2026
GPQA Diamond
Google: Gemini 3.1 Flash Lite Preview—
MoonshotAI: Kimi K2.587.6%
seed-bootstrap · Aug 1, 2026
Time to first token
Google: Gemini 3.1 Flash Lite Preview—
MoonshotAI: Kimi K2.5270 ms
seed-bootstrap · Aug 1, 2026
Output speed
Google: Gemini 3.1 Flash Lite Preview—
MoonshotAI: Kimi K2.572 tok/s
seed-bootstrap · Aug 1, 2026
Input priceGoogle: Gemini 3.1 Flash Lite Preview (+$0.32/1M)
Google: Gemini 3.1 Flash Lite Preview$0.25/1M
openrouter · Aug 17, 2026
MoonshotAI: Kimi K2.5$0.57/1M
openrouter · Aug 17, 2026
Output priceGoogle: Gemini 3.1 Flash Lite Preview (+$1.35/1M)
Google: Gemini 3.1 Flash Lite Preview$1.5/1M
openrouter · Aug 17, 2026
MoonshotAI: Kimi K2.5$2.85/1M
openrouter · Aug 17, 2026
Context windowGoogle: Gemini 3.1 Flash Lite Preview (+786k)
Google: Gemini 3.1 Flash Lite Preview1M
openrouter · Aug 17, 2026
MoonshotAI: Kimi K2.5262k
openrouter · Aug 17, 2026
BenchmarkGoogle: Gemini 3.1 Flash Lite PreviewMoonshotAI: Kimi K2.5Advantage 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
$0.25/1M
openrouter · Aug 17, 2026
$0.57/1M
openrouter · Aug 17, 2026
Google: Gemini 3.1 Flash Lite Preview (+$0.32/1M)
Output price
$1.5/1M
openrouter · Aug 17, 2026
$2.85/1M
openrouter · Aug 17, 2026
Google: Gemini 3.1 Flash Lite Preview (+$1.35/1M)
Context window
1M
openrouter · Aug 17, 2026
262k
openrouter · Aug 17, 2026
Google: Gemini 3.1 Flash Lite Preview (+786k)
Interactive Simulator (USD)

Workload Cost & Savings Calculator

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

Save up to 50% with Google: Gemini 3.1 Flash Lite Preview
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Google: Gemini 3.1 Flash Lite Preview$31.25 / mo
In: $8.75Out: $22.5
MoonshotAI: Kimi K2.5$62.70 / mo
In: $19.95Out: $42.75
Estimated Cost Delta

Google: Gemini 3.1 Flash Lite Preview is estimated to save $31.45/month ($377/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Google: Gemini 3.1 Flash Lite Preview:Pick Google: Gemini 3.1 Flash Lite Preview when you are optimizing output cost.
  • 2
    Google: Gemini 3.1 Flash Lite Preview:Pick Google: Gemini 3.1 Flash Lite Preview for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatGoogle: Gemini 3.1 Flash Lite Preview

Lower output list price ($1.5/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGGoogle: Gemini 3.1 Flash Lite Preview

Larger window (1M).

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 chatGoogle: Gemini 3.1 Flash Lite PreviewLower output list price ($1.5/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGGoogle: Gemini 3.1 Flash Lite PreviewLarger window (1M).
Screenshots / visionMoonshotAI: Kimi K2.5MoonshotAI: Kimi K2.5 is the side marked multimodal in the catalog.
Community Sentiment

Cast Your Matchup Vote

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CompareLLM Matrix

Verified head-to-head card

LIVE
VS
Google

Google: Gemini 3.1 Flash Lite Preview

Elo n/a
LiveBench—
SWE-bench—
Speed—
Output cost$1.5/1M
Moonshot

MoonshotAI: Kimi K2.5

Elo 1,515
LiveBench67.2%
SWE-bench71.3%
Speed72 tok/s
Output cost$2.85/1M

Frequently Asked Questions

Which is better overall, Google: Gemini 3.1 Flash Lite Preview or MoonshotAI: Kimi K2.5?
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, Google: Gemini 3.1 Flash Lite Preview or MoonshotAI: Kimi K2.5?
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?
Google: Gemini 3.1 Flash Lite Preview output tokens are $1.5/1M versus $2.85/1M. Input prices and retry rates still move the real bill.
Which is faster, Google: Gemini 3.1 Flash Lite Preview or MoonshotAI: Kimi K2.5?
We do not have TTFT for both models.
Which has the larger context window?
Google: Gemini 3.1 Flash Lite Preview accepts 1M 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. Google: Gemini 3.1 Flash Lite Preview and MoonshotAI: Kimi K2.5 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Google: Gemini 3.1 Flash Lite Preview matchups →|All MoonshotAI: Kimi K2.5 matchups →
MoonshotAI: Kimi K2.5 vs MoonshotAI: Kimi K2 0711 (previous kimi)MoonshotAI: Kimi K2.5 vs Kimi K3 (next kimi)Gemini 3 Pro vs MoonshotAI: Kimi K2.5Gemini 3 Flash vs MoonshotAI: Kimi K2.5Gemini 2.0 Flash Thinking vs MoonshotAI: Kimi K2.5Gemini 3.6 Pro vs MoonshotAI: Kimi K2.5