GPT-5.6 Terra vs Muse Spark 1.1
Price, context and benchmark scores side by side — every number from the live model catalogue.
| GPT-5.6 Terraopenai | Muse Spark 1.1meta | |
|---|---|---|
| Input / 1M tokens | $1.25 | $1.25 |
| Output / 1M tokens | $7.50 | $4.25 |
| 1M in + 300K out | $3.50 | $2.52 |
| Context window | 1.1M | 1.0M |
| Intelligence index | 55.0 | 50.6 |
| Coding index | 76.7 | 71.3 |
| Agentic index | 47.4 | 37.5 |
| Cheapest provider | OpenAI | Meta |
| Providers serving it | 2 | 1 |
| Weights | Closed | Closed |
| Image input | Yes | Yes |
| Tool calling | Yes | Yes |
| Reasoning mode | Yes | Yes |
| Released | Jul 9, 2026 | Jul 16, 2026 |
Which one to pick
Pick GPT-5.6 Terra if…
- You want the higher general-intelligence score (55.0).
- Code quality is the priority — it leads on the coding index (76.7).
- You are running agent loops — higher agentic index (47.4).
- You need the bigger context window (1.1M).
- You want provider redundancy: 2 providers serve it.
Pick Muse Spark 1.1 if…
- Token cost matters: $4.25 per 1M output vs $7.50.
FAQ
Is GPT-5.6 Terra better than Muse Spark 1.1?
GPT-5.6 Terra scores higher on general intelligence (55.0 vs 50.6), while Muse Spark 1.1 is 1.8× cheaper per output token ($4.25 vs $7.50). For code, GPT-5.6 Terra leads (76.7 coding index). GPT-5.6 Terra takes the larger context at 1.1M.
Which is cheaper, GPT-5.6 Terra or Muse Spark 1.1?
Muse Spark 1.1, at $4.25 per 1M output tokens versus $7.50. On a 1M input + 300K output workload that is $2.52 against $3.50.
Can I self-host GPT-5.6 Terra or Muse Spark 1.1?
GPT-5.6 Terra: closed weights, API only. Muse Spark 1.1: closed weights, API only.