Real data comparison
DeepSeek: DeepSeek V4 Flash 0423 vs OpenAI: GPT-5.6 Luna (batch)
On quality, OpenAI: GPT-5.6 Luna (batch) leads (52.3 vs 51.8). On price, DeepSeek: DeepSeek V4 Flash 0423 is cheaper ($0.11 vs $0.22 per 1M). In real production usage, DeepSeek: DeepSeek V4 Flash 0423 is used more (rank #1 vs #9 of 291). Across 26 real task categories where both models have classified traffic, DeepSeek: DeepSeek V4 Flash 0423 handles more of the traffic in 26 of them.
- DeepSeek: DeepSeek V4 Flash 0423
- OpenAI: GPT-5.6 Luna (batch)
Head-to-head by real task
DeepSeek: DeepSeek V4 Flash 0423 leads 26 of 26 shared task categories by real classified traffic share; OpenAI: GPT-5.6 Luna (batch) leads 0. Not a benchmark score - this is what developers actually route to each model for, per OpenRouter's task classification.
| Task | DeepSeek: DeepSeek V4 Flash 0423 | OpenAI: GPT-5.6 Luna (batch) |
|---|---|---|
| Web Search | 34.1% | 4.8% |
| Tool Dispatch | 28.1% | 5.8% |
| Translation | 24.0% | 2.6% |
| Security Audit | 22.8% | 3.1% |
| Content Writing | 22.4% | 3.0% |
| Conversation | 22.2% | 3.1% |
| Multi-step Planning | 25.1% | 6.2% |
| Data Transformation | 22.4% | 4.1% |
| Research & Reports | 22.6% | 4.8% |
| DevOps | 23.0% | 5.3% |
| Q&A & Knowledge | 20.2% | 3.9% |
| Workflow Execution | 20.7% | 5.7% |
| DevOps & Config | 23.0% | 8.1% |
| SQL & Database | 19.8% | 6.2% |
| Repo Scanning | 19.5% | 6.5% |
| File I/O | 20.1% | 7.2% |
| Debugging | 18.5% | 6.9% |
| Shell Execution | 14.5% | 3.7% |
| Data Extraction | 13.7% | 3.2% |
| Code Generation | 19.7% | 9.4% |
| Summarization | 14.4% | 4.2% |
| Code Review | 17.3% | 7.2% |
| Math | 17.1% | 7.5% |
| Customer Support | 13.3% | 4.8% |
| Classification | 15.2% | 7.3% |
| Frontend & UI | 17.2% | 10.1% |
Usage share over time
- DeepSeek: DeepSeek V4 Flash 0423
- OpenAI: GPT-5.6 Luna (batch)
Frequently asked questions
DeepSeek: DeepSeek V4 Flash 0423 vs OpenAI: GPT-5.6 Luna (batch): which is better quality?
OpenAI: GPT-5.6 Luna (batch) scores higher on Artificial Analysis's Intelligence Index (52.3 vs 51.8).
DeepSeek: DeepSeek V4 Flash 0423 vs OpenAI: GPT-5.6 Luna (batch): which is cheaper?
DeepSeek: DeepSeek V4 Flash 0423 is cheaper at $0.11/1M vs $0.22/1M.
DeepSeek: DeepSeek V4 Flash 0423 vs OpenAI: GPT-5.6 Luna (batch): which is used more?
DeepSeek: DeepSeek V4 Flash 0423 has higher real OpenRouter usage share (rank #1 vs #9 of 291).
DeepSeek: DeepSeek V4 Flash 0423 vs OpenAI: GPT-5.6 Luna (batch): which wins more real-world task categories?
DeepSeek: DeepSeek V4 Flash 0423 handles more traffic in 26 of 26 shared task categories where both models have classified OpenRouter usage.
Source: OpenRouter (openrouter.ai/rankings), as of August 9, 2026.
Benchmark scores: Artificial Analysis (artificialanalysis.ai) via OpenRouter (openrouter.ai/rankings).
Methodology: smophy.ai/benchmark/methodology
Token counts originate from each provider's own tokenizer and are not directly comparable across providers.