OpenAI: GPT Luna Latest vs Meta: Muse Spark 1.2
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-07.
| OpenAI: GPT Luna Latest | Meta: Muse Spark 1.2 | |
|---|---|---|
| Vendor | ~openai | meta |
| Quality Score | 100 | 100 |
| Input Price | $0.10/M | $1.25/M |
| Output Price | $0.50/M | $4.25/M |
| Context Window | 1,050,000 | 1,048,576 |
| Max Output | 128,000 | 943,718 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, GPT Luna Latest costs $0.23 and Muse Spark 1.2 costs $2.31, so GPT Luna Latest is about 10.3 times cheaper for the same work.
Both take in a similar amount of text: 1,050,000 and 1,048,576 tokens, about 1,575 and 1,573 pages.
Only Muse Spark 1.2 offers video input.
Across the 10 tasks where they differ, GPT Luna Latest scores higher on 10 (SQL Generation, Code Completion, Code Documentation and others).
GPT Luna Latest was released in September 2026 and Muse Spark 1.2 in August 2026.
Pick GPT Luna Latest if you need lower cost or the stronger all-round task scores; pick Muse Spark 1.2 if you need video input.
Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.
Who wins by task?
| Task | OpenAI: GPT Luna Latest | Meta: Muse Spark 1.2 |
|---|---|---|
| SQL Generation | 133 | 133 |
| Code Completion | 131 | 118 |
| Code Documentation | 131 | 130 |
| Regex Writing | 119 | 118 |
| CSV / Spreadsheet Cleanup | 133 | 133 |
| JSON Extraction | 131 | 122 |
| Bulk Data Labeling | 129 | 120 |
| Long-Document Summarization | 137 | 137 |
| Short-Form Summarization | 123 | 114 |
| Blog Post Writing | 121 | 121 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →