Meta route
muse-spark-1.2-contributor
Muse Spark 1.2 Contributor API access.
Same Contributor licence as 1.3: $0.10 / $0.20 per 1M because Meta may train on prompts and completions. Do not send confidential material. Tool calling is not supported on RouterPlex. See the Muse Spark Contributor API pricing notes.
Input / 1M tokens
$0.10
Output / 1M tokens
$0.20
Cached input / 1M tokens
$0.008
Context window
1M
Provider
Meta
Workload calculator
Put the token rate into context.
These examples apply the published input and output rates directly. Actual cost follows the exact tokens your client sends and the model returns.
This route is the cheapest of 64 comparable text models and cheaper than 62 on the same key. Its context window ranks 9th of 64.
Short request
$0.0012
10K input + 1K output
Agent turn
$0.012
100K input + 10K output
Exact token billing
No request minimum
One model ID change
OpenAI compatible
Cost neighbourhood
Nearby routes, same workload.
Every comparison uses the same 100K-input / 10K-output turn. Changing route is a one-line model ID edit.
Price does not measure task quality.
First request
Route it in one call.
Use any OpenAI SDK or tool. Keep the request shape, point the base URL at RouterPlex, and set the model ID shown here.
Read the quickstartcurl https://api.routerplex.com/v1/chat/completions \-H "Authorization: Bearer $ROUTERPLEX_API_KEY" \-H "Content-Type: application/json" \-d '{"model": "muse-spark-1.2-contributor","messages": [{"role": "user", "content": "Hello!"}]}'
Route notes
Questions before production traffic.
01How much does the Muse Spark 1.2 Contributor API cost?+
Through RouterPlex, Muse Spark 1.2 Contributor costs $0.10 per 1M input tokens and $0.20 per 1M output tokens — the vendor list price with 0% markup, billed per token from a prepaid balance you top up from $5. Cached input tokens are billed at $0.008 per 1M instead of the full input rate, which is most of the prompt on a repeated agent or coding loop. Contributor edition. Meta prices this at $0.10 input / $0.20 output per 1M tokens instead of the standard Muse Spark rate of $1.25 / $4.25, in exchange for the right to use the prompts and completions you send to it to train future Meta models. Do not send confidential, personal, or client-owned material to this model. It is never used as a default or a fallback -- it runs only when you name it explicitly. Tool calling is not supported on RouterPlex, and Meta limits availability to certain regions.
02What does one Muse Spark 1.2 Contributor agent turn cost?+
A 100K-token input with a 10K-token reply costs about $0.012 on Muse Spark 1.2 Contributor. That makes it the cheapest of 64 comparable text models on RouterPlex.
03Is Muse Spark 1.2 Contributor cheaper than MiMo V2.5?+
Yes. Per agent turn, Muse Spark 1.2 Contributor costs about $0.012 against $0.014 for MiMo V2.5 — 13% less.
04What is the context window of Muse Spark 1.2 Contributor?+
Muse Spark 1.2 Contributor supports a 1M token context window on RouterPlex, the 9th largest of the 64 models that publish one.
05Can I use Muse Spark 1.2 Contributor with the OpenAI SDK?+
Yes. RouterPlex serves Muse Spark 1.2 Contributor through an OpenAI-compatible endpoint at https://api.routerplex.com/v1 — point any OpenAI SDK or tool at that base URL with your RouterPlex key and set model to "muse-spark-1.2-contributor".
Provider family
More from Meta.
Deploy this route
Put Muse Spark 1.2 Contributor behind one key.
Top up from $5 with no subscription required.