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Muse Spark Open vs OpenAI: gpt-oss-120b

Try both on us. Starter credit covers your first requests, then one key routes Muse Spark Open and gpt-oss-120b. Switch by changing the model name.

Compare routesProviders, price, context, and policy posture in one view.

Use auto when uptime mattersKeep a primary model and let fallback handle provider failures.

Same API shapeUse the OpenAI client and set the model you want.

Practical read

Monthly evidence

Muse Spark Open has the larger context window. gpt-oss-120b has the lower published input-plus-output rate, more Credits provider routes and the lower measured p50 time to first token.

$5.8025/1MMuse Spark Open cheapest route

$0.211/1MOpenAI: gpt-oss-120b cheapest route

1312 msMuse Spark Open fastest measured p50 TTFT via baseten

1033 msOpenAI: gpt-oss-120b fastest measured p50 TTFT via cerebras

The price comparison adds each route's rate for one million input tokens and one million output tokens; your cost depends on your input/output mix. Prices and live route measurements can change. Use the monthly reports when you need a stable evidence window, then run a small task-specific eval before choosing a production default.

Muse Spark OpenOpenAI: gpt-oss-120b

Model idmeta-models/muse-spark-openopenai/gpt-oss-120b

Publishermeta-models OpenAI

AI IQ IQ 122#38 IQ 98#132

Context1,048,576 tokens131,072 tokens

Credits provider routes224

Cheapest route$5.8025/1M$0.211/1M

Cached input$0.15825/1M$0.015825/1M to $0.1055/1M

Privacy posturehas ZDR routehas Confidential route (E2EE + ZDR)

Fastest measured p50 TTFT1312 ms via baseten1033 ms via cerebras

Highest measured throughputnot enough data132 tok/s via amazon-bedrock

Recent route uptime range100.00%88.31% to 100.00%

Modes chat chat

Muse Spark Open routes

Overview2 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

OpenAI: gpt-oss-120b routes

Overview24 Credits routes
PricingInput, cached input, and output rates
ProvidersAll serving providers

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Production choice

Pick a default model. Keep fallback enabled.

TrustedRouter is useful when you know the model you want, but still need provider rollover, budget limits, usage records, and a prompt path you can verify.

OpenAI clientPython

client = OpenAI(
    base_url="https://api.trustedrouter.com/v1",
    api_key="sk-tr-v1-..."
)

response = client.chat.completions.create(
    model="meta-models/muse-spark-open",
    messages=messages,
)

Questions

Which should I use, Muse Spark Open or OpenAI: gpt-oss-120b?

Muse Spark Open has the larger context window. gpt-oss-120b has the lower published input-plus-output rate, more Credits provider routes and the lower measured p50 time to first token.

Is Muse Spark Open or OpenAI: gpt-oss-120b cheaper?

The current cheapest TrustedRouter route is $5.8025/1M for Muse Spark Open and $0.211/1M for OpenAI: gpt-oss-120b. The comparison uses current catalog prices and updates as provider pricing changes.

Is Muse Spark Open or OpenAI: gpt-oss-120b faster?

Current measured p50 time to first token is 1312 ms for Muse Spark Open and 1033 ms for OpenAI: gpt-oss-120b. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test Muse Spark Open and OpenAI: gpt-oss-120b with the same API?

Yes. Use the same OpenAI-compatible TrustedRouter base URL and API key, then change only the model id between meta-models/muse-spark-open and openai/gpt-oss-120b. This makes side-by-side evals possible without maintaining two provider integrations.