GPT-6 Luna vs Muse Spark 1.3 pricing
- For the Chatbot workload, GPT-6 Luna costs 9.6× less than Muse Spark 1.3.
- For the RAG workload, GPT-6 Luna costs 12× less than Muse Spark 1.3.
- For the Coding agent workload, GPT-6 Luna costs 11× less than Muse Spark 1.3.
Prices
| USD per 1M tokens | GPT-6 Luna | Muse Spark 1.3 |
|---|---|---|
| Input | $0.10 | $1.25 |
| Output | $0.50 | $4.25 |
| Cache read | $0.01 | $0.15 |
| Cache write | $0.125 | Not published |
| Batch input | $0.05 | Not published |
| Batch output | $0.25 | Not published |
Verified against the provider's official pricing page on Oct 9, 2026. Official pricing page
Meta's list price for its own API, as compiled by models.dev and checked Oct 10, 2026, 09:00 UTC. Prices on cloud platforms and resellers can differ. Provider documentation
Monthly cost by workload
| Workload | GPT-6 Luna | Muse Spark 1.3 |
|---|---|---|
| Chatbot1,000 in / 500 out tokens, 10,000 requests a day | $105.00/mo | $1,013/mo |
| RAG8,000 in / 500 out tokens, 5,000 requests a day | $157.50/mo | $1,819/mo |
| Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input | $72.00/mo | $810.00/mo |
Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.
Context and capabilities
| GPT-6 Luna | Muse Spark 1.3 | |
|---|---|---|
| Context | 1,050,000 tokens | 1,048,576 tokens |
| Max output | 128,000 tokens | 131,072 tokens |
| Input | text, image, pdf | text, image, video, pdf, audio |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
Questions
- What is the price difference between GPT-6 Luna and Muse Spark 1.3?
- GPT-6 Luna: $0.10 per 1M input tokens and $0.50 per 1M output tokens. Muse Spark 1.3: $1.25 per 1M input tokens and $4.25 per 1M output tokens. For the Chatbot workload (1,000 in / 500 out tokens, 10,000 requests a day), that is about $105.00 per month for GPT-6 Luna and $1,013 for Muse Spark 1.3.
- Which has the longer context window, GPT-6 Luna or Muse Spark 1.3?
- GPT-6 Luna has the longer context window: up to 1,050,000 tokens, compared with 1,048,576 for Muse Spark 1.3.
- Do GPT-6 Luna and Muse Spark 1.3 have prompt caching and batch prices?
- GPT-6 Luna: cached input $0.01 per 1M tokens; batch $0.05 per 1M input tokens and $0.25 per 1M output tokens. Muse Spark 1.3: cached input $0.15 per 1M tokens; no batch price published.