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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. xAI: Grok Latest vs Kimi K3

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

xAI: Grok Latest vs Kimi K3 benchmark

In this head-to-head showdown, xAI: Grok Latest is more budget-friendly at $6/1M 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 xAI: Grok Latest and Kimi K3 present distinct architectural strengths. Compare the verified benchmark matrix below to choose the model tailored to your specific application requirements.
Share Analysis:
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Verified Head-to-Head Advantage Breakdown

3 direct benchmark disciplines evaluated across capability, speed, and cost

xAI: Grok Latest (2)Kimi K3 (1)
xAI: Grok Latest
2 of 3 Wins
✓Input price✓Output price
Kimi K3
1 of 3 Wins
✓Context window
~x-ai
Leads 2 of 3 metrics
xAI: Grok Latest

Auto-discovered from OpenRouter (~x-ai/grok-latest). Preview until a second source matches.

$6/1M out
Moonshot
Leads 1 of 3 metrics
Kimi K3

Moonshot AI frontier flagship reasoning and agent swarm model with 256k context and top-tier SWE-bench coding capability.

Elo 1,528$15/1M out

Kimi K3 Thinking Depth & Cost Scaler

Model B

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
290 ms
Standard speed
Reasoning Depth
~2,500
Internal tokens
Cost / 1k Calls
$43.50
7.3× standard bill
Accuracy Boost
+5.5% accuracy
STEM & SWE-bench
Top Rival Showdowns for xAI: Grok Latest
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 LeaderxAI: Grok Latest Wins

xAI: Grok Latest

$6 / 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 Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.

Tap any node to inspect
0–100 %ile
Head-to-Head Comparison

Overall Matchup Breakdown

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

xAI: Grok Latest (2)vsKimi K3 (8)
xAI: Grok Latest: 2W (20%)Overall: Kimi K3Kimi K3: 8W (80%)
← xAI: Grok LatestKimi K3 →
🏆Kimi K3(5/5)

Intelligence & Reasoning

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

Benchmark
xAI: Grok LatestvsKimi K3
Preference Elo
—vs1,528
Coding Elo
—vs1,535
SWE-bench
—vs73.8%
LiveBench
—vs69.5%
GPQA Diamond
—vs88.4%
xAI: Grok Latest: 0WKimi K3: 5W
🏆Kimi K3(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
xAI: Grok LatestvsKimi K3
Output speed
—vs68 tok/s
Time to first token
—vs290 ms
xAI: Grok Latest: 0WKimi K3: 2W
🏆xAI: Grok Latest(2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
xAI: Grok LatestvsKimi K3
Output price
$6/1Mvs$15/1M+$9/1M
Input price
$2/1Mvs$3/1M+$1/1M
Context window
500kvs1M+549k
xAI: Grok Latest: 2WKimi K3: 1W

Side-by-Side Benchmark Matrix

Preference Elo
xAI: Grok Latest—
Kimi K31,528
lmarena · Aug 17, 2026
Coding Elo
xAI: Grok Latest—
Kimi K31,535
lmarena · Aug 17, 2026
LiveBench
xAI: Grok Latest—
Kimi K369.5%
livebench · Aug 17, 2026
SWE-bench
xAI: Grok Latest—
Kimi K373.8%
swebench · Aug 17, 2026
GPQA Diamond
xAI: Grok Latest—
Kimi K388.4%
seed-bootstrap · Aug 1, 2026
Time to first token
xAI: Grok Latest—
Kimi K3290 ms
seed-bootstrap · Aug 1, 2026
Output speed
xAI: Grok Latest—
Kimi K368 tok/s
seed-bootstrap · Aug 1, 2026
Input price+$1/1M
xAI: Grok Latest$2/1M
openrouter · Aug 17, 2026
Kimi K3$3/1M
openrouter · Aug 17, 2026
Output price+$9/1M
xAI: Grok Latest$6/1M
openrouter · Aug 17, 2026
Kimi K3$15/1M
openrouter · Aug 17, 2026
Context window+549k
xAI: Grok Latest500k
openrouter · Aug 17, 2026
Kimi K31M
openrouter · Aug 17, 2026
BenchmarkxAI: Grok LatestKimi K3Advantage Delta
Preference Elo—
1,528
lmarena · Aug 17, 2026
—
Coding Elo—
1,535
lmarena · Aug 17, 2026
—
LiveBench—
69.5%
livebench · Aug 17, 2026
—
SWE-bench—
73.8%
swebench · Aug 17, 2026
—
GPQA Diamond—
88.4%
seed-bootstrap · Aug 1, 2026
—
Time to first token—
290 ms
seed-bootstrap · Aug 1, 2026
—
Output speed—
68 tok/s
seed-bootstrap · Aug 1, 2026
—
Input price
$2/1M
openrouter · Aug 17, 2026
$3/1M
openrouter · Aug 17, 2026
+$1/1M
Output price
$6/1M
openrouter · Aug 17, 2026
$15/1M
openrouter · Aug 17, 2026
+$9/1M
Context window
500k
openrouter · Aug 17, 2026
1M
openrouter · Aug 17, 2026
+549k
Interactive Simulator (USD)

Workload Cost & Savings Calculator

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

Save up to 52% with xAI: Grok Latest
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
xAI: Grok Latest$160.00 / mo
In: $70Out: $90
Kimi K3$330.00 / mo
In: $105Out: $225
Estimated Cost Delta

xAI: Grok Latest is estimated to save $170.00/month ($2,040/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    xAI: Grok Latest:Pick xAI: Grok Latest when you are optimizing output cost.
  • 2
    Kimi K3:Pick Kimi K3 for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatxAI: Grok Latest

Lower output list price ($6/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGKimi K3

Larger window (1M).

Screenshots / visionKimi K3

Kimi K3 is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatxAI: Grok LatestLower output list price ($6/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGKimi K3Larger window (1M).
Screenshots / visionKimi K3Kimi K3 is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news
launchJun 8, 2026

Kimi K3: Moonshot’s long-context open-weight competitive row

Jun 2026. The Kimi vs GPT hub remaps to the top Moonshot Elo vs top OpenAI Elo.

Community Sentiment

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
~x-ai

xAI: Grok Latest

Elo n/a
SWE-bench—
Speed (tok/s)500k
Input / 1M Tokens$2/1M
Output / 1M Tokens$6/1M
Moonshot

Kimi K3

Elo 1,528
SWE-bench73.8%
Speed (tok/s)68 tok/s
Input / 1M Tokens$3/1M
Output / 1M Tokens$15/1M

Frequently Asked Questions

Which is better overall, xAI: Grok Latest or Kimi K3?
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, xAI: Grok Latest or Kimi K3?
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?
xAI: Grok Latest output tokens are $6/1M versus $15/1M. Input prices and retry rates still move the real bill.
Which is faster, xAI: Grok Latest or Kimi K3?
We do not have TTFT for both models.
Which has the larger context window?
Kimi K3 accepts 1M tokens versus 500k.
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. xAI: Grok Latest and Kimi K3 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Related news

  • launch · Jun 8, 2026

    Kimi K3: Moonshot’s long-context open-weight competitive row

Similar Head-to-Head Comparisons

All xAI: Grok Latest matchups →|All Kimi K3 matchups →
Kimi K3 vs MoonshotAI: Kimi K2.5 (previous kimi)MoonshotAI: Kimi K2 0711 vs Kimi K3Kimi Chat 1.5 vs Kimi K3Claude Opus 4.5 vs Kimi K3Claude Opus 4.6 vs Kimi K3Claude Sonnet 4.5 vs Kimi K3