DeepSeek V4 Pro vs Yi-Lightning
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for DeepSeek V4 Pro and Yi-Lightning.
DeepSeek V4 Pro
DeepSeek V4 Pro is a large-scale Mixture-of-Experts model from DeepSeek with 1.6T total parameters and 49B activated parameters, supporting a 1M-token context window. It is designed for advanced reasoning, coding,...
Yi-Lightning
Yi-Lightning is 01.AI's (ιΆδΈδΈη©) fastest and most cost-efficient model, purpose-built for high-throughput production workloads. It delivers competitive performance against GPT-4o-mini and Claude Haiku at a fraction of the cost, with exceptional bilingual Chinese-English capabilities. Yi-Lightning excels at classification, entity extraction, summarization, and high-frequency API tasks where latency and cost-per-call are critical constraints.
Technical Specifications
| Specification | DeepSeek V4 Pro | Yi-Lightning |
|---|---|---|
| Provider | DeepSeek | 01.AI |
| Context Window | 1,048,576 tokens | 131,072 tokens |
| Agent Suitability | 94/100 | 82/100 |
| Time to First Token (TTFT) | 280 ms | 120 ms |
| Deployment Model | managed api | managed api |
| Production Stability | stable | stable |
| API Available | Yes | Yes |
| Released Date | 2026-04-24 | 2025-10-01 |
API Pricing Comparison
Input Price per Million Tokens
DeepSeek V4 Pro
$0.43
Yi-Lightning
$0.15
Output Price per Million Tokens
DeepSeek V4 Pro
$0.87
Yi-Lightning
$0.30
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
DeepSeek V4 Pro Quirks & Gotchas
- βΈMoE architecture β cold-start latency on first request, use keep-alive
- βΈBest cost-performance ratio of any frontier model β strong tool calling for agentic use
Yi-Lightning Quirks & Gotchas
- βΈBest cost-efficiency for high-volume bilingual applications
- βΈSelf-hostable via Ollama β excellent open-weight option for Asian-language pipelines