Pairwise benchmark snapshot · Aug 16, 2026

MoonshotAI: Kimi K2 0711 vs Qwen3.8 27B benchmark

Name: MoonshotAI: Kimi K2 0711 vs Qwen3.8 27B AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares MoonshotAI: Kimi K2 0711 (Moonshot) and Qwen3.8 27B (Alibaba) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, MoonshotAI: Kimi K2 0711 is ahead by 67 points (1,465 vs 1,398; seed-bootstrap (Aug 1, 2026)). On SWE-bench coding, MoonshotAI: Kimi K2 0711 resolves 65.8% versus 58.8% (seed-bootstrap (Aug 1, 2026)). Qwen3.8 27B streams faster (152 tok/s) while MoonshotAI: Kimi K2 0711 is the cheaper output token ($2.3/1M). Qwen3.8 27B has the larger context window (262k tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

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Moonshot

MoonshotAI: Kimi K2 0711

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

Elo 1,465$2.3/1M out

Alibaba

Qwen3.8 27B

Alibaba open-weight 27B drop dated Aug 14 2026. Dense enough to self-host; not a frontier MoE.

Elo 1,398$3.1999999999999997/1M out

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Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

MoonshotAI: Kimi K2 0711 (6)vsQwen3.8 27B (4)

MoonshotAI: Kimi K2 0711: 6W (60%)Overall: MoonshotAI: Kimi K2 0711Qwen3.8 27B: 4W (40%)

← MoonshotAI: Kimi K2 0711Qwen3.8 27B →

MoonshotAI: Kimi K2 0711 (5/5)

Intelligence & Reasoning

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

Preference Elo

1,465vs1,398

Coding Elo

1,470vs1,422

SWE-bench

65.8%vs58.8%

LiveBench

62.8%vs60.6%

GPQA Diamond

76.5%vs73.4%

MoonshotAI: Kimi K2 0711: 5WQwen3.8 27B: 0W

Qwen3.8 27B (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

85 tok/svs152 tok/s

Time to first token

240 msvs140 ms

MoonshotAI: Kimi K2 0711: 0WQwen3.8 27B: 2W

Qwen3.8 27B (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$2.3/1Mvs$3.2/1M

Input price

$0.57/1Mvs$0.45/1M

Context window

131kvs262k

MoonshotAI: Kimi K2 0711: 1WQwen3.8 27B: 2W

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 0711 4/6

Preference Elo

MoonshotAI: Kimi K2 0711

67 pts advantage

Throughput Speed

Qwen3.8 27B

67 tok/s faster

Price Efficiency

MoonshotAI: Kimi K2 0711

$0.90/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

+5%1,465

EloHigh is better

1,398

Code Elo

High is better

+3%1,470

Code EloHigh is better

1,422

LiveBench

High is better

+4%62.8%

LiveBenchHigh is better

60.6%

SWE-bench

High is better

+12%65.8%

SWE-benchHigh is better

58.8%

GPQA

High is better

+4%76.5%

GPQAHigh is better

73.4%

TTFT

Low is better

240 ms

TTFTLow is better

140 ms+71%

Speed

High is better

85 tok/s

SpeedHigh is better

152 tok/s+79%

In $

Low is better

$0.57/1M

In $Low is better

$0.45/1M+27%

Out $

Low is better

+39%$2.3/1M

Out $Low is better

$3.2/1M

Context

High is better

131k

ContextHigh is better

262k+100%

Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

Save up to 15% with MoonshotAI: Kimi K2 0711

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 0711$54.45 / mo

In: $19.95Out: $34.50

Qwen3.8 27B$63.75 / mo

In: $15.75Out: $48.00

Estimated Cost Delta

MoonshotAI: Kimi K2 0711 is estimated to save $9.30/month ($112/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
MoonshotAI: Kimi K2 0711:Pick MoonshotAI: Kimi K2 0711 when repo-level coding accuracy is the constraint.
2
Qwen3.8 27B:Pick Qwen3.8 27B when time-to-first-token matters more than peak Elo.
3
MoonshotAI: Kimi K2 0711:Pick MoonshotAI: Kimi K2 0711 as the default general assistant.

Recommended Workload Routing

Repo / coding agentsMoonshotAI: Kimi K2 0711

Higher SWE-bench (65.8%).

High-volume chatMoonshotAI: Kimi K2 0711

Lower output list price ($2.3/1M).

Voice / low-latency UIQwen3.8 27B

Lower TTFT (140 ms).

Long-document RAGQwen3.8 27B

Larger window (262k).

Screenshots / visionMoonshotAI: Kimi K2 0711

MoonshotAI: Kimi K2 0711 is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	MoonshotAI: Kimi K2 0711	Higher SWE-bench (65.8%).
High-volume chat	MoonshotAI: Kimi K2 0711	Lower output list price ($2.3/1M).
Voice / low-latency UI	Qwen3.8 27B	Lower TTFT (140 ms).
Long-document RAG	Qwen3.8 27B	Larger window (262k).
Screenshots / vision	MoonshotAI: Kimi K2 0711	MoonshotAI: Kimi K2 0711 is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news

launchAug 14, 2026

Qwen3.8 27B (Aug 14): dense enough to self-host, not a frontier MoE

Alibaba open-weight 27B drop. Local/open-weight lists should see it. It will not win frontier-agents.

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LIVE

Moonshot

MoonshotAI: Kimi K2 0711

Elo 1,465

LiveBench62.8%

SWE-bench65.8%

Speed85 tok/s

Output cost$2.3/1M

Alibaba

Qwen3.8 27B

Elo 1,398

LiveBench60.6%

SWE-bench58.8%

Speed152 tok/s

Output cost$3.2/1M

Frequently Asked Questions

Which is better overall, MoonshotAI: Kimi K2 0711 or Qwen3.8 27B?: MoonshotAI: Kimi K2 0711 has the higher preference Elo in our latest snapshot (1,465). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, MoonshotAI: Kimi K2 0711 or Qwen3.8 27B?: MoonshotAI: Kimi K2 0711 leads SWE-bench at 65.8% vs 58.8%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?: MoonshotAI: Kimi K2 0711 output tokens are $2.3/1M versus $3.2/1M. Input prices and retry rates still move the real bill.
Which is faster, MoonshotAI: Kimi K2 0711 or Qwen3.8 27B?: Qwen3.8 27B has the lower time-to-first-token (140 ms vs 240 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?: Qwen3.8 27B accepts 262k tokens versus 131k.
Can I self-host either model?: Qwen3.8 27B is marked open-weights in our catalog. The other side is a closed API. Check the provider license before you ship weights.
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 0711 and Qwen3.8 27B Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All MoonshotAI: Kimi K2 0711 matchups →|All Qwen3.8 27B matchups →

MoonshotAI: Kimi K2 0711 vs Kimi Chat 1.5 (previous kimi)MoonshotAI: Kimi K2 0711 vs MoonshotAI: Kimi K2.5 (next kimi)Qwen3.8 27B vs Qwen 3 Max (previous qwen)Qwen QwQ 32B vs MoonshotAI: Kimi K2 0711 Qwen 3 Max vs MoonshotAI: Kimi K2 0711 Kimi K3 vs MoonshotAI: Kimi K2 0711

MoonshotAI: Kimi K2 0711 vs Qwen3.8 27B benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

MoonshotAI: Kimi K2 0711 (6)vsQwen3.8 27B (4)

MoonshotAI: Kimi K2 0711: 6W (60%)Overall: MoonshotAI: Kimi K2 0711Qwen3.8 27B: 4W (40%)

← MoonshotAI: Kimi K2 0711Qwen3.8 27B →

MoonshotAI: Kimi K2 0711 (5/5)

Intelligence & Reasoning

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

Preference Elo

1,465vs1,398

Coding Elo

1,470vs1,422

SWE-bench

65.8%vs58.8%

LiveBench

62.8%vs60.6%

GPQA Diamond

76.5%vs73.4%

MoonshotAI: Kimi K2 0711: 5WQwen3.8 27B: 0W

Qwen3.8 27B (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

85 tok/svs152 tok/s

Time to first token

240 msvs140 ms

MoonshotAI: Kimi K2 0711: 0WQwen3.8 27B: 2W

Qwen3.8 27B (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$2.3/1Mvs$3.2/1M

Input price

$0.57/1Mvs$0.45/1M

Context window

131kvs262k

MoonshotAI: Kimi K2 0711: 1WQwen3.8 27B: 2W

Recommended Workload Routing

Repo / coding agentsMoonshotAI: Kimi K2 0711

Higher SWE-bench (65.8%).

High-volume chatMoonshotAI: Kimi K2 0711

Lower output list price ($2.3/1M).

Voice / low-latency UIQwen3.8 27B

Lower TTFT (140 ms).

Long-document RAGQwen3.8 27B

Larger window (262k).

Screenshots / visionMoonshotAI: Kimi K2 0711

MoonshotAI: Kimi K2 0711 is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	MoonshotAI: Kimi K2 0711	Higher SWE-bench (65.8%).
High-volume chat	MoonshotAI: Kimi K2 0711	Lower output list price ($2.3/1M).
Voice / low-latency UI	Qwen3.8 27B	Lower TTFT (140 ms).
Long-document RAG	Qwen3.8 27B	Larger window (262k).
Screenshots / vision	MoonshotAI: Kimi K2 0711	MoonshotAI: Kimi K2 0711 is the side marked multimodal in the catalog.

Frequently Asked Questions

Which is better overall, MoonshotAI: Kimi K2 0711 or Qwen3.8 27B?

MoonshotAI: Kimi K2 0711 has the higher preference Elo in our latest snapshot (1,465). “Better” still depends on coding, price, and latency — see the table.

Which is better at coding, MoonshotAI: Kimi K2 0711 or Qwen3.8 27B?

MoonshotAI: Kimi K2 0711 leads SWE-bench at 65.8% vs 58.8%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

MoonshotAI: Kimi K2 0711 output tokens are $2.3/1M versus $3.2/1M. Input prices and retry rates still move the real bill.

Which is faster, MoonshotAI: Kimi K2 0711 or Qwen3.8 27B?

Qwen3.8 27B has the lower time-to-first-token (140 ms vs 240 ms). Tokens/sec is a separate column if you care about long completions.

Which has the larger context window?

Qwen3.8 27B accepts 262k tokens versus 131k.

Can I self-host either model?

Qwen3.8 27B is marked open-weights in our catalog. The other side is a closed API. Check the provider license before you ship weights.

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 0711 and Qwen3.8 27B Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

MoonshotAI: Kimi K2 0711

Qwen3.8 27B

MoonshotAI: Kimi K2 0711

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Qwen3.8 27B (Aug 14): dense enough to self-host, not a frontier MoE

Cast Your Matchup Vote

Community Discussions (0)

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CompareLLM Matrix

MoonshotAI: Kimi K2 0711

Qwen3.8 27B

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

MoonshotAI: Kimi K2 0711

Qwen3.8 27B

MoonshotAI: Kimi K2 0711

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Qwen3.8 27B (Aug 14): dense enough to self-host, not a frontier MoE

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

MoonshotAI: Kimi K2 0711

Qwen3.8 27B

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons