Based on weekly OpenRouter usage tracked by AI Tier List, DeepSeek: DeepSeek V4 Flash ranks #3 overall — ahead of OpenAI: GPT-5.5 at #14. DeepSeek: DeepSeek V4 Flash is cheaper on input tokens at $0.09/1M vs $5/1M for OpenAI: GPT-5.5. OpenAI: GPT-5.5 offers the larger context window at 1.1M tokens.
| DeepSeek: DeepSeek V4 Flash | OpenAI: GPT-5.5 | |
|---|---|---|
| Author | deepseek | openai |
| Input price (per 1M tokens) | $0.09 | $5 |
| Output price (per 1M tokens) | $0.18 | $30 |
| Context window | 1M | 1.1M |
| Input modalities | text | file, image, text |
| Output modalities | text | text |
| AA Intelligence | — | 54.8 |
| AA Coding | — | 74.9 |
| AA Agentic | 31.1 | 44.9 |
| Released | Apr 2026 | Apr 2026 |
| Task | DeepSeek: DeepSeek V4 Flash | OpenAI: GPT-5.5 |
|---|---|---|
| Overall | #3 | #14 |
| Memory Extraction | #2 | — |
| Multi-step Planning | #1 | #7 |
| Tool Dispatch | #1 | — |
| Web Search | #1 | — |
| Agent Workflows | #2 | #9 |
Usage ranks are weekly data aggregated by OpenRouter. Prices are USD per 1M tokens.
| Classification & Tagging | #1 | — |
| Debugging | #4 | — |
| DevOps Config | #3 | — |
| File Read/Write | #3 | — |
| Frontend UI | #4 | #5 |
| Code Implementation | #4 | — |
| Repo Analysis | #5 | — |
| Code Review & Security | #4 | #7 |
| Shell Execution | #5 | — |
