Muse Spark 1.2 is $28.75 cheaper per 1M input tokens (95.8% lower; 24x difference).
API cost decision in 10 seconds
Muse Spark 1.2 vs GPT-5.5 Pro
Pick Muse Spark 1.2 for lower cost; pick GPT-5.5 Pro only if the larger context window matters more.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Muse Spark 1.2 for lower cost; pick GPT-5.5 Pro only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Muse Spark 1.2 is estimated at $3.38 vs $120 for GPT-5.5 Pro, saving $116.62 (97.2% lower).
Cost-first pickMuse Spark 1.2
Context-first pickGPT-5.5 Pro
Sample savings$116.6297.2%
10x traffic gap$1166.25
GPT-5.5 Pro has more context, but Muse Spark 1.2 saves $116.62 on the standard workload. At 10x that traffic, the same price gap is about $1166.25. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Muse Spark 1.2 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Muse Spark 1.2 | GPT-5.5 Pro |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Muse Spark 1.2 | $8.38 | $240 |
| Balanced workload | 1M input + 1M output | Muse Spark 1.2 | $5.5 | $210 |
| Output-heavy chatbot | 1M input + 5M output | Muse Spark 1.2 | $22.5 | $930 |
Muse Spark 1.2 is $175.75 cheaper per 1M output tokens (97.6% lower; 42.4x difference).
GPT-5.5 Pro has 1.42K more context (1x larger).
Muse Spark 1.2 is $116.62 cheaper on the standard workload (97.2% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Muse Spark 1.2 has the lower input price; Muse Spark 1.2 has the lower output price; GPT-5.5 Pro offers the larger context window. For the 1M input plus 500K output sample, Muse Spark 1.2 is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $3.38 for Muse Spark 1.2 and $120 for GPT-5.5 Pro.
Choose Muse Spark 1.2 when you care most about lower input-token price, and lower output-token price.
Choose GPT-5.5 Pro when you care most about larger context window.
- On the standard 1M input plus 500K output workload, Muse Spark 1.2 is estimated at $3.38 vs $120 for GPT-5.5 Pro, saving $116.62 (97.2% lower).
- Muse Spark 1.2 is $116.62 cheaper on the standard workload (97.2% lower).
- Muse Spark 1.2 is $28.75 cheaper per 1M input tokens (95.8% lower; 24x difference).
- Muse Spark 1.2 is $175.75 cheaper per 1M output tokens (97.6% lower; 42.4x difference).
- GPT-5.5 Pro has 1.42K more context (1x larger).
| Feature | Muse Spark 1.2 (Meta) | GPT-5.5 Pro (OpenAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $1.25 | $30 |
| Completion Price per 1M tokens | $4.25 | $180 |
| Sample Workload Cost 1M input + 500K output | $3.38 | $120 |
| Context Window | 1.05M | 1.05M |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Muse Spark 1.2 | On the standard 1M input plus 500K output workload, Muse Spark 1.2 is estimated at $3.38 vs $120 for GPT-5.5 Pro, saving $116.62 (97.2% lower). |
| High-volume input processing | Muse Spark 1.2 | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Muse Spark 1.2 | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | GPT-5.5 Pro | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Llama 3.3 70B Instruct (free) can replace Muse Spark 1.2 when lower sample workload cost matters most: $0.
- Llama 3.2 3B Instruct (free) can replace Muse Spark 1.2 when lower sample workload cost matters most: $0.
- Llama 3.1 8B Instruct can replace Muse Spark 1.2 when lower sample workload cost matters most: $0.09.
- Llama 3.2 1B Instruct can replace Muse Spark 1.2 when lower sample workload cost matters most: $0.13.
- Grok 4.20 Multi-Agent offers 2M context with $2.5 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- DeepSeek V4 Flash 0731 offers 1.31M context with $0.17 sample workload cost.
- DeepSeek V4 Flash Latest offers 1.31M context with $0.11 sample workload cost.
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- MiMo-V2.5 · Xiaomi · #2
- Hy3 · Tencent · #3
- Ox Alpha · stealth · #4
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