Real data comparison
DeepSeek: DeepSeek V4.1 Flash (batch) vs OpenAI: GPT-6 Luna (batch)
On quality, DeepSeek: DeepSeek V4.1 Flash (batch) leads (39.5 vs 38.1). On price, OpenAI: GPT-6 Luna (batch) is cheaper ($0.20 vs $0.25 per 1M). In real production usage, DeepSeek: DeepSeek V4.1 Flash (batch) is used more (rank #3 vs #13 of 380). Across 26 real task categories where both models have classified traffic, DeepSeek: DeepSeek V4.1 Flash (batch) handles more of the traffic in 22 of them.
- DeepSeek: DeepSeek V4.1 Flash (batch)
- OpenAI: GPT-6 Luna (batch)
Head-to-head by real task
DeepSeek: DeepSeek V4.1 Flash (batch) leads 22 of 26 shared task categories by real classified traffic share; OpenAI: GPT-6 Luna (batch) leads 4. Not a benchmark score - this is what developers actually route to each model for, per OpenRouter's task classification.
| Task | DeepSeek: DeepSeek V4.1 Flash (batch) | OpenAI: GPT-6 Luna (batch) |
|---|---|---|
| DevOps & Config | 53.6% | 2.5% |
| Shell Execution | 36.2% | 3.1% |
| Code Generation | 37.0% | 5.1% |
| Repo Scanning | 34.7% | 3.1% |
| Debugging | 30.6% | 4.6% |
| File I/O | 24.4% | 4.0% |
| Code Review | 20.4% | 5.9% |
| Workflow Execution | 19.0% | 5.0% |
| Multi-step Planning | 19.2% | 5.4% |
| DevOps | 16.0% | 2.2% |
| Frontend & UI | 17.8% | 5.0% |
| Tool Dispatch | 15.8% | 6.5% |
| Data Transformation | 11.9% | 4.8% |
| Content Writing | 10.8% | 4.7% |
| Conversation | 9.6% | 3.6% |
| Customer Support | 7.3% | 13.2% |
| Math | 10.5% | 5.2% |
| Research & Reports | 10.7% | 15.7% |
| SQL & Database | 16.2% | 12.7% |
| Finance & Trading | 5.5% | 2.0% |
| Summarization | 5.3% | 7.3% |
| Data Extraction | 7.4% | 5.4% |
| Web Search | 10.2% | 8.3% |
| Q&A & Knowledge | 8.8% | 10.2% |
| Translation | 6.9% | 6.0% |
| Classification | 4.7% | 4.4% |
Usage share over time
- DeepSeek: DeepSeek V4.1 Flash (batch)
- OpenAI: GPT-6 Luna (batch)
Frequently asked questions
DeepSeek: DeepSeek V4.1 Flash (batch) vs OpenAI: GPT-6 Luna (batch): which is better quality?
DeepSeek: DeepSeek V4.1 Flash (batch) scores higher on Artificial Analysis's Intelligence Index (39.5 vs 38.1).
DeepSeek: DeepSeek V4.1 Flash (batch) vs OpenAI: GPT-6 Luna (batch): which is cheaper?
OpenAI: GPT-6 Luna (batch) is cheaper at $0.20/1M vs $0.25/1M.
DeepSeek: DeepSeek V4.1 Flash (batch) vs OpenAI: GPT-6 Luna (batch): which is used more?
DeepSeek: DeepSeek V4.1 Flash (batch) has higher real OpenRouter usage share (rank #3 vs #13 of 380).
DeepSeek: DeepSeek V4.1 Flash (batch) vs OpenAI: GPT-6 Luna (batch): which wins more real-world task categories?
DeepSeek: DeepSeek V4.1 Flash (batch) handles more traffic in 22 of 26 shared task categories where both models have classified OpenRouter usage.
Source: OpenRouter (openrouter.ai/rankings), as of October 14, 2026.
Benchmark scores: Artificial Analysis (artificialanalysis.ai) via OpenRouter (openrouter.ai/rankings).
Methodology: www.smophy.ai/benchmark/methodology
Token counts originate from each provider's own tokenizer and are not directly comparable across providers.