Head to head

Meta Muse Spark 1.3 vs Grok 4.3

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

Swap sides

Grok 4.3 costs 1.1× less per message.

Both hold the same amount of context.

Fact

Meta Muse Spark 1.3Meta

OpenChat with Meta Muse Spark 1.3

Grok 4.3X-AI

OpenChat with Grok 4.3

Made by

Meta

X-AI

Content tier

Open

Intelligence

Smart & Cheap

Brilliant

Estimated price per message

~3.43 credits≈ 29 messages for 1 €

~3.09 credits≈ 32 messages for 1 €

Context window

1M tokens≈ 1,613 pages of text in one go

1M tokens≈ 1,538 pages of text in one go

Reads

Text, Images, Video

Text, Images

Writes

Text

Tool use

Yes - search, memory, code and more

Served via

OpenRouter, Unbottled AI

Status

Current

Legacy

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 €.

Meta Muse Spark 1.3 details Grok 4.3 details