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Head to head

Grok 4.3 vs Kimi K3

Price, context, inputs and filters. No benchmarks theatre.

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Grok 4.3 costs 1.1× less per message.

Both hold the same amount of context.

Grok 4.3X-AI
OpenChat with Grok 4.3
Kimi K3Moonshot AI
OpenChat with Kimi K3
Made by
X-AI
Moonshot AI
Content tier
Open
Open
Intelligence
Brilliant
Brilliant
Estimated price per message
~3.09 credits≈ 32 messages for $1
~3.52 credits≈ 28 messages for $1
Context window
1M tokens≈ 1,538 pages of text in one go
1M tokens≈ 1,613 pages of text in one go
Reads
Text, Images
Text, Images, Video
Writes
Text
Text
Tool use
Yes - search, memory, code and more
Yes - search, memory, code and more
Served via
OpenRouter, Unbottled AI
OpenRouter, Unbottled AI
Status
Legacy
Current

A typical message: 16K tokens in, 1.5K out. Short replies cost less. Models served via OpenRouter bill the real provider cost plus our markup, so actual charges vary. 1 credit = $0.01.

Grok 4.3 detailsKimi K3 details