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

Grok 3 vs MoonshotAI: Kimi K2.7 Code benchmark

Name: Grok 3 vs MoonshotAI: Kimi K2.7 Code AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Grok 3 (xAI) and MoonshotAI: Kimi K2.7 Code (Moonshot) using the latest snapshots we have as of Aug 17, 2026. MoonshotAI: Kimi K2.7 Code wins on output price at $3.5/1M. MoonshotAI: Kimi K2.7 Code 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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xAI

Grok 3

Previous xAI generation before Grok 4. Kept for grok 3 vs grok 4.

Elo 1,405$15/1M out

Moonshot

MoonshotAI: Kimi K2.7 Code

Auto-discovered from OpenRouter (moonshotai/kimi-k2.7-code). Preview until a second source matches.

$3.5/1M out

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Model A

Model B

Quick vs:vs Claude Opus 4.5 vs Claude Opus 4.6 vs Claude Sonnet 4.5 vs Claude 3.7 Sonnet

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Grok 3 (6)vsMoonshotAI: Kimi K2.7 Code (3)

Grok 3: 6W (67%)Overall: Grok 3MoonshotAI: Kimi K2.7 Code: 3W (33%)

← Grok 3MoonshotAI: Kimi K2.7 Code →

Grok 3 (4/5)

Intelligence & Reasoning

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

Preference Elo

1,405vs—

Coding Elo

—vs—

SWE-bench

51.4%vs—

LiveBench

60.2%vs—

GPQA Diamond

74.2%vs—

Grok 3: 4WMoonshotAI: Kimi K2.7 Code: 0W

Grok 3 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

88 tok/svs—

Time to first token

250 msvs—

Grok 3: 2WMoonshotAI: Kimi K2.7 Code: 0W

MoonshotAI: Kimi K2.7 Code (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$15/1Mvs$3.5/1M

Input price

$3/1Mvs$0.71/1M

Context window

131kvs262k

Grok 3: 0WMoonshotAI: Kimi K2.7 Code: 3W

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 AdvantageGrok 3 4/6

Preference Elo

No shared data

Throughput Speed

No shared data

Price Efficiency

MoonshotAI: Kimi K2.7 Code

$11.50/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

1,405

EloHigh is better

—

LiveBench

High is better

60.2%

LiveBenchHigh is better

—

SWE-bench

High is better

51.4%

SWE-benchHigh is better

—

GPQA

High is better

74.2%

GPQAHigh is better

—

TTFT

Low is better

250 ms

TTFTLow is better

—

Speed

High is better

88 tok/s

SpeedHigh is better

—

In $

Low is better

$3/1M

In $Low is better

$0.71/1M+323%

Out $

Low is better

$15/1M

Out $Low is better

$3.5/1M+329%

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 77% with MoonshotAI: Kimi K2.7 Code

Monthly Volume50M tokens/mo

Quick Presets:

Token Ratio (In vs Out)70% In / 30% Out

RAG / Search (10% out)Coding / Chat (50% out)

Grok 3$330.00 / mo

In: $105.00Out: $225.00

MoonshotAI: Kimi K2.7 Code$77.35 / mo

In: $24.85Out: $52.50

Estimated Cost Delta

MoonshotAI: Kimi K2.7 Code is estimated to save $252.65/month ($3,032/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
MoonshotAI: Kimi K2.7 Code:Pick MoonshotAI: Kimi K2.7 Code when you are optimizing output cost.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatMoonshotAI: Kimi K2.7 Code

Lower output list price ($3.5/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGMoonshotAI: Kimi K2.7 Code

Larger window (262k).

Screenshots / visionGrok 3

Grok 3 is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	MoonshotAI: Kimi K2.7 Code	Lower output list price ($3.5/1M).
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	MoonshotAI: Kimi K2.7 Code	Larger window (262k).
Screenshots / vision	Grok 3	Grok 3 is the side marked multimodal in the catalog.

Community Sentiment

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CompareLLM Matrix

Verified head-to-head card

LIVE

xAI

Grok 3

Elo 1,405

LiveBench60.2%

SWE-bench51.4%

Speed88 tok/s

Output cost$15/1M

Moonshot

MoonshotAI: Kimi K2.7 Code

Elo n/a

LiveBench—

SWE-bench—

Speed—

Output cost$3.5/1M

Frequently Asked Questions

Which is better overall, Grok 3 or MoonshotAI: Kimi K2.7 Code?: 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, Grok 3 or MoonshotAI: Kimi K2.7 Code?: 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?: MoonshotAI: Kimi K2.7 Code output tokens are $3.5/1M versus $15/1M. Input prices and retry rates still move the real bill.
Which is faster, Grok 3 or MoonshotAI: Kimi K2.7 Code?: We do not have TTFT for both models.
Which has the larger context window?: MoonshotAI: Kimi K2.7 Code accepts 262k tokens versus 131k.
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. Grok 3 and MoonshotAI: Kimi K2.7 Code Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Grok 3 matchups →|All MoonshotAI: Kimi K2.7 Code matchups →

Grok 3 vs Grok 4 (next grok)Kimi K3 vs Grok 3 Grok 4.6 vs Grok 3 Kimi Chat 1.5 vs Grok 3 MoonshotAI: Kimi K2 0711 vs Grok 3 MoonshotAI: Kimi K2.5 vs Grok 3

Grok 3 vs MoonshotAI: Kimi K2.7 Code benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Grok 3 (6)vsMoonshotAI: Kimi K2.7 Code (3)

Grok 3: 6W (67%)Overall: Grok 3MoonshotAI: Kimi K2.7 Code: 3W (33%)

← Grok 3MoonshotAI: Kimi K2.7 Code →

Grok 3 (4/5)

Intelligence & Reasoning

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

Preference Elo

1,405vs—

Coding Elo

—vs—

SWE-bench

51.4%vs—

LiveBench

60.2%vs—

GPQA Diamond

74.2%vs—

Grok 3: 4WMoonshotAI: Kimi K2.7 Code: 0W

Grok 3 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

88 tok/svs—

Time to first token

250 msvs—

Grok 3: 2WMoonshotAI: Kimi K2.7 Code: 0W

MoonshotAI: Kimi K2.7 Code (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$15/1Mvs$3.5/1M

Input price

$3/1Mvs$0.71/1M

Context window

131kvs262k

Grok 3: 0WMoonshotAI: Kimi K2.7 Code: 3W

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatMoonshotAI: Kimi K2.7 Code

Lower output list price ($3.5/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGMoonshotAI: Kimi K2.7 Code

Larger window (262k).

Screenshots / visionGrok 3

Grok 3 is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	MoonshotAI: Kimi K2.7 Code	Lower output list price ($3.5/1M).
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	MoonshotAI: Kimi K2.7 Code	Larger window (262k).
Screenshots / vision	Grok 3	Grok 3 is the side marked multimodal in the catalog.

Frequently Asked Questions

Which is better overall, Grok 3 or MoonshotAI: Kimi K2.7 Code?

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, Grok 3 or MoonshotAI: Kimi K2.7 Code?

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?

MoonshotAI: Kimi K2.7 Code output tokens are $3.5/1M versus $15/1M. Input prices and retry rates still move the real bill.

Which is faster, Grok 3 or MoonshotAI: Kimi K2.7 Code?

We do not have TTFT for both models.

Which has the larger context window?

MoonshotAI: Kimi K2.7 Code accepts 262k tokens versus 131k.

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. Grok 3 and MoonshotAI: Kimi K2.7 Code Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.