OpenAI: GPT Luna Latest vs Meta: Muse Spark 1.2 Contributor
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 Contributor | |
|---|---|---|
| Vendor | ~openai | meta |
| Quality Score | 100 | 100 |
| Input Price | $0.10/M | $0.10/M |
| Output Price | $0.50/M | $0.20/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, Muse Spark 1.2 Contributor costs $0.15 and GPT Luna Latest costs $0.23, so Muse Spark 1.2 Contributor is about 1.5 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 Contributor offers video input.
Across the 5 tasks where they differ, Muse Spark 1.2 Contributor on 5 (SQL Generation, CSV / Spreadsheet Cleanup, Bulk Data Labeling and others).
GPT Luna Latest was released in September 2026 and Muse Spark 1.2 Contributor in August 2026.
Pick Muse Spark 1.2 Contributor if you need lower cost, video input or the stronger all-round task scores.
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 Contributor |
|---|---|---|
| SQL Generation | 133 | 134 |
| CSV / Spreadsheet Cleanup | 133 | 134 |
| Bulk Data Labeling | 129 | 129 |
| Long-Document Summarization | 137 | 138 |
| Blog Post Writing | 121 | 122 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →