head-to-head
DeepSeek: DeepSeek V4 Flash Vision Exp (batch) vs OpenAI: GPT-5.6 Luna
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-09.
| DeepSeek: DeepSeek V4 Flash Vision Exp (batch) | OpenAI: GPT-5.6 Luna | |
|---|---|---|
| Vendor | deepseek | openai |
| Quality Score | 100 | 100 |
| Benchmark Score | 80.1 | 79.3 |
| Input Price | $0.11/M | $0.20/M |
| Output Price | $0.33/M | $1.20/M |
| Context Window | 1,048,576 | 1,050,000 |
| Max Output | 943,718 | 128,000 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | 57.8 | 61.9 |
| ai_index_agentic | 79.4 | 70.4 |
| ai_index_coding | 100.0 | 100.0 |
Who wins by task?
| Task | DeepSeek: DeepSeek V4 Flash Vision Exp (batch) | OpenAI: GPT-5.6 Luna |
|---|---|---|
| SQL Generation | 169 | 168 |
| Code Review | 161 | 161 |
| Code Completion | 133 | 133 |
| Bug Fixing | 175 | 174 |
| Unit Test Generation | 151 | 151 |
| Code Documentation | 141 | 141 |
| Regex Writing | 134 | 134 |
| CI/CD Pipelines | 141 | 141 |
| Frontend Component Design | 143 | 143 |
| Data Analysis | 167 | 165 |
| CSV / Spreadsheet Cleanup | 153 | 153 |
| ETL Scripting | 150 | 150 |
| JSON Extraction | 149 | 148 |
| Bulk Data Labeling | 135 | 135 |
| Short-Form Summarization | 131 | 130 |
| Blog Post Writing | 137 | 137 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →
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