Which is cheaper, Muse Spark 1.2 and GLM-5.3?

GLM-5.3 has the lowest input price. Per 1M input tokens: Muse Spark 1.2 from $1.25 and GLM-5.3 from $0.56.

Which is better for coding, Muse Spark 1.2 and GLM-5.3?

GLM-5.3 scores highest on the Artificial Analysis Coding Index: Muse Spark 1.2 72.2 and GLM-5.3 74.8.

Which is smarter, Muse Spark 1.2 and GLM-5.3?

GLM-5.3 scores highest on the Artificial Analysis Intelligence Index: Muse Spark 1.2 39.6 and GLM-5.3 44.8.

Can I switch between Muse Spark 1.2 and GLM-5.3 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, z-ai/glm-5.3).

Muse Spark 1.2 vs GLM-5.3

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

GLM-5.3 Z.aiz-ai/glm-5.3

Creator

Muse Spark 1.2 vs GLM-5.3: summary

Muse Spark 1.2 and GLM-5.3 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.

GLM-5.3, from Z.ai, has a 1,048,576-token context window, costs from $0.56/1M input and $2.50/1M output tokens across 5 providers and scores 44.8 on the Artificial Analysis Intelligence Index.

GLM-5.3 is the cheapest on input, 2.2× cheaper than the next model, GLM-5.3 scores highest for intelligence and GLM-5.3 leads on coding.

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="z-ai/glm-5.3", messages=[...])

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Benchmark scores sourced from ArtificialAnalysis