OpenAI: GPT-6 Sol (batch) vs OpenAI: GPT Luna Latest
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-27.
| OpenAI: GPT-6 Sol (batch) | OpenAI: GPT Luna Latest | |
|---|---|---|
| Vendor | openai | ~openai |
| Quality Score | 100 | 100 |
| Benchmark Score | 81.2 | - |
| Input Price | $1.00/M | $0.10/M |
| Output Price | $5.00/M | $0.50/M |
| Context Window | 1,050,000 | 1,050,000 |
| Max Output | 128,000 | 128,000 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | 78.4 | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, GPT Luna Latest costs $0.23 and GPT-6 Sol (batch) costs $2.25, so GPT Luna Latest is about 10.0 times cheaper for the same work.
Both read up to 1,050,000 tokens at once, roughly 1,575 pages of text.
Across the 20 tasks where they differ, GPT-6 Sol (batch) scores higher on 16 (SQL Generation, Code Review, Code Refactoring and others), GPT Luna Latest on 4 (Code Completion, JSON Extraction, Bulk Data Labeling and others).
Pick GPT-6 Sol (batch) if you need the stronger all-round task scores; pick GPT Luna Latest if you need lower cost.
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-6 Sol (batch) | OpenAI: GPT Luna Latest |
|---|---|---|
| SQL Generation | 142 | 133 |
| Code Review | 146 | 132 |
| Code Completion | 120 | 131 |
| Code Refactoring | 148 | 136 |
| Bug Fixing | 150 | 136 |
| Unit Test Generation | 133 | 124 |
| Code Documentation | 137 | 131 |
| Regex Writing | 126 | 119 |
| CI/CD Pipelines | 129 | 120 |
| Frontend Component Design | 131 | 122 |
| Data Analysis | 135 | 124 |
| CSV / Spreadsheet Cleanup | 136 | 133 |
| ETL Scripting | 139 | 128 |
| JSON Extraction | 122 | 131 |
| Bulk Data Labeling | 120 | 129 |
| OCR / Document Parsing | 134 | 131 |
| Table Extraction from PDFs | 134 | 131 |
| Long-Document Summarization | 149 | 137 |
| Short-Form Summarization | 118 | 123 |
| Blog Post Writing | 130 | 121 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →