Gemini 4 Argon vs Muse Spark Open

Compare Gemini 4 Argon from Google and Muse Spark Open from Meta on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.

Gemini 4 Argon vs Muse Spark Open: side-by-side summary

Gemini 4 Argon and Muse Spark Open are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Gemini 4 Argon, from Google, has a 1,048,576-token context window and is priced at $2/M tokens input, $10/M tokens output on OpenRouter.

Muse Spark Open, from Meta, has a 1,048,576-token context window and is priced at $1.25/M tokens input, $4.25/M tokens output on OpenRouter.

Context window

Gemini 4 Argon: 1,048,576 tokens
Muse Spark Open: 1,048,576 tokens

Price

Gemini 4 Argon: $2/M tokens input, $10/M tokens output
Muse Spark Open: $1.25/M tokens input, $4.25/M tokens output

Provided by

Gemini 4 Argon: Google
Muse Spark Open: Meta

Gemini 4 Argon vs Muse Spark Open at a glance

Gemini 4 Argon vs Muse Spark Open comparison
Attribute	Gemini 4 Argon	Muse Spark Open
Input price	$2/M tokens	$1.25/M tokens
Output price	$10/M tokens	$4.25/M tokens
Context window	1,048,576 tokens	1,048,576 tokens
Intelligence Index	52.6	Not available
Coding Index	Not available	Not available
Agentic Index	Not available	Not available
Latency (p50)	16.60 s	1.23 s
Throughput (p50)	46.0 tok/s	76.0 tok/s

Benchmark data updated Oct 13, 2026

Frequently asked questions

Is Gemini 4 Argon cheaper than Muse Spark Open?

Muse Spark Open is cheaper than Gemini 4 Argon on OpenRouter: Muse Spark Open costs $1.25/M tokens input and $4.25/M tokens output, while Gemini 4 Argon costs $2/M tokens input and $10/M tokens output.

Which has the longer context window, Gemini 4 Argon or Muse Spark Open?

Gemini 4 Argon and Muse Spark Open have the same context window of 1,048,576 tokens.

Which is faster, Gemini 4 Argon or Muse Spark Open?

Muse Spark Open is faster on OpenRouter, generating a median 76.0 tokens per second compared with 46.0 tokens per second for Gemini 4 Argon.

Gemini 4 Argon vs Muse Spark Open

Gemini 4 Argon vs Muse Spark Open

Overview