Which is cheaper, Muse Spark 1.2 and Grok 4.7?

Muse Spark 1.2 has the lowest input price. Per 1M input tokens: Muse Spark 1.2 from $1.25 and Grok 4.7 from $2.00.

Which has the larger context window, Muse Spark 1.2 and Grok 4.7?

Muse Spark 1.2 has the largest context window: Muse Spark 1.2 1,048,576 tokens and Grok 4.7 500,000 tokens.

Can I switch between Muse Spark 1.2 and Grok 4.7 without changing my code?

Yes. All of them are served through FastRouter's OpenAI-compatible API, so switching is a change of the model parameter (meta/muse-spark-1.2, x-ai/grok-4.7).

Muse Spark 1.2 vs Grok 4.7

Side-by-side pricing per provider, context window, benchmark scores and speed, all on one OpenAI-compatible API.

Muse Spark 1.2 Metameta/muse-spark-1.2

Grok 4.7 xAIx-ai/grok-4.7

Creator

Muse Spark 1.2 vs Grok 4.7: summary

Muse Spark 1.2 and Grok 4.7 are both available through FastRouter's OpenAI-compatible API, so switching between them is a change of model id, not a new integration.

Muse Spark 1.2, from Meta, has a 1,048,576-token context window, costs $1.25/1M input and $4.25/1M output tokens and scores 39.6 on the Artificial Analysis Intelligence Index.

Grok 4.7, from xAI, has a 500,000-token context window, costs $2.00/1M input and $6.00/1M output tokens and scores 46.3 on the Artificial Analysis Intelligence Index.

Muse Spark 1.2 is the cheapest on input, 1.6× cheaper than the next model, Muse Spark 1.2 has the largest context window and Grok 4.7 scores highest for intelligence.

Switch with one line

client = OpenAI(base_url="https://api.fastrouter.ai/api/v1", api_key="<FASTROUTER_API_KEY>") client.chat.completions.create(model="meta/muse-spark-1.2", messages=[...]) # or client.chat.completions.create(model="x-ai/grok-4.7", messages=[...])

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Benchmark scores sourced from ArtificialAnalysis