OpenAI: GPT Luna Latest vs DeepSeek: DeepSeek V4 Flash Latest
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-07.
| OpenAI: GPT Luna Latest | DeepSeek: DeepSeek V4 Flash Latest | |
|---|---|---|
| Vendor | ~openai | ~deepseek |
| Quality Score | 100 | 99 |
| Input Price | $0.10/M | $0.04/M |
| Output Price | $0.50/M | $0.30/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, DeepSeek V4 Flash Latest costs $0.12 and GPT Luna Latest costs $0.23, so DeepSeek V4 Flash Latest is about 1.9 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 GPT Luna Latest offers image input.
Across the 20 tasks where they differ, GPT Luna Latest scores higher on 20 (SQL Generation, Code Review, Code Completion and others).
GPT Luna Latest was released in September 2026 and DeepSeek V4 Flash Latest in August 2026.
Pick GPT Luna Latest if you need image input or the stronger all-round task scores; pick DeepSeek V4 Flash 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 Luna Latest | DeepSeek: DeepSeek V4 Flash Latest |
|---|---|---|
| SQL Generation | 133 | 133 |
| Code Review | 132 | 131 |
| Code Completion | 131 | 131 |
| Code Refactoring | 136 | 135 |
| Bug Fixing | 136 | 135 |
| Unit Test Generation | 124 | 123 |
| Code Documentation | 131 | 131 |
| Regex Writing | 119 | 119 |
| CI/CD Pipelines | 120 | 119 |
| Frontend Component Design | 122 | 91 |
| Data Analysis | 124 | 123 |
| CSV / Spreadsheet Cleanup | 133 | 133 |
| ETL Scripting | 128 | 127 |
| JSON Extraction | 131 | 131 |
| Bulk Data Labeling | 129 | 129 |
| OCR / Document Parsing | 131 | 85 |
| Table Extraction from PDFs | 131 | 85 |
| Long-Document Summarization | 137 | 137 |
| Short-Form Summarization | 123 | 123 |
| Blog Post Writing | 121 | 121 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →