What is the difference between Grok 4.7 and Kimi K3?

Grok 4.7 is developed by xAI while Kimi K3 is developed by Moonshot AI. Grok 4.7 has a 500K token context window vs Kimi K3's 1.0M. You can compare their actual outputs across 2 challenges on Rival to see how they differ in practice.

Which is better, Grok 4.7 or Kimi K3?

It depends on your use case. Grok 4.7 and Kimi K3 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 2 challenges so you can judge which fits your needs best.

How much does Grok 4.7 cost compared to Kimi K3?

Grok 4.7 costs $1.5999999999999999/M input tokens and Kimi K3 costs $3/M input tokens. Grok 4.7 is $1.40/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Grok 4.7 and Kimi K3 on Rival?

This page shows a side-by-side comparison of Grok 4.7 and Kimi K3 across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Updated Sep 2026

Grok 4.7vsKimi K3

Grok 4.7 is cheaper than Kimi K3 at $1.5999999999999999/M vs $3/M input tokens.

Grok 4.7 and Kimi K3 compared across 2 shared prompts
Spec	Grok 4.7	Kimi K3
Input price	$1.5999999999999999/M tokens	$3/M tokens
Output price	$4.8/M tokens	$15/M tokens
Context window	500K tokens	1.0M tokens
Weights	Closed	Open
Free API (OpenRouter)	No	No
Released	Sep 2026	Jul 2026

Our Verdict

Grok 4.7

Kimi K3

Not enough votes to call it. On the specs, nothing separates them.

Grok 4.7 costs 3.1x less per token.

Too close to call

API pricing

Cost per 1M tokens

Grok 4.7

Input

$1.60

1.9× cheaper

Output

$4.80

3.1× cheaper

Kimi K3

Input

$3.00

Output

$15.00

Grok 4.7 is cheaper on both: 1.9× input, 3.1× output.

Where to run it

18 hosts, cheapest first

Grok 4.71 host

HostInOutContextUptime

xAI$1.60 in$4.80 out500k99.3% up

Kimi K317 hosts

HostInOutContextUptime

InferenceNetfp4$1.50 in$7.50 out1M98.3% up Relacefp4$1.70 in$8.50 out1M98.9% up Phala$2.07 in$10.35 out1M97.1% up Morph$2.13 in$11.90 out1M98.6% up Sail Researchfp4$2.14 in$10.76 out1M99.8% up Wafer$2.40 in$10.95 out1M99.9% up

11 more hosts

Makora$2.55 in$12.75 out1M96.6% up DigitalOcean$2.55 in$12.95 out1M99.6% up Basetenfp8$3.00 in$15.00 out1M99.4% up Chutesmxfp4$3.00 in$15.00 out1M98% up Fireworks$3.00 in$15.00 out1M99.9% up Modalmxfp4$3.00 in$15.00 out1M99.4% up Moonshot AImxfp4$3.00 in$15.00 out1M99.9% up Parasailfp4$3.00 in$15.00 out1M97.9% up Together$3.00 in$15.00 out1M99.3% up Alibaba Cloud$3.45 in$17.25 out1M98.1% up DeepInfrabf16degraded$2.85 in$14.25 out1M95.5% up

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Cost per 1M tokens

18 hosts, cheapest first

What we learned reading every model

Common questions

What is the difference between Grok 4.7 and Kimi K3?

Which is better, Grok 4.7 or Kimi K3?

How much does Grok 4.7 cost compared to Kimi K3?

How can I compare Grok 4.7 and Kimi K3 on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages

Cost per 1M tokens

18 hosts, cheapest first

What we learned reading every model

Common questions

What is the difference between Grok 4.7 and Kimi K3?

Which is better, Grok 4.7 or Kimi K3?

How much does Grok 4.7 cost compared to Kimi K3?

How can I compare Grok 4.7 and Kimi K3 on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages