Compare Aion-2.0 from Aion Labs and DeepSeek V4 Pro 0423 from DeepSeek on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.


Aion-2.0 and DeepSeek V4 Pro 0423 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Aion-2.0, from Aion Labs, has a 131,072-token context window and is priced at $0.80/M tokens input, $1.60/M tokens output on OpenRouter.
DeepSeek V4 Pro 0423, from DeepSeek, has a 1,048,576-token context window and is priced at $0.45/M tokens input, $3.48/M tokens output on OpenRouter.
| Attribute | Aion-2.0 | DeepSeek V4 Pro 0423 |
|---|---|---|
| Input price | $0.80/M tokens | $0.45/M tokens |
| Output price | $1.60/M tokens | $3.48/M tokens |
| Context window | 131,072 tokens | 1,048,576 tokens |
| Intelligence Index | Not available | 30.1 |
| Coding Index | Not available | 58.7 |
| Agentic Index | Not available | Not available |
| Latency (p50) | 0.79 s | 1.36 s |
| Throughput (p50) | 53.0 tok/s | 22.0 tok/s |
Benchmark data updated
Aion-2.0 and DeepSeek V4 Pro 0423 trade off on price: Aion-2.0 costs $0.80/M tokens input and $1.60/M tokens output, while DeepSeek V4 Pro 0423 costs $0.45/M tokens input and $3.48/M tokens output, so DeepSeek V4 Pro 0423 is cheaper for input tokens and Aion-2.0 is cheaper for output tokens.
DeepSeek V4 Pro 0423 has the longer context window at 1,048,576 tokens, compared with 131,072 tokens for Aion-2.0.
Aion-2.0 is faster on OpenRouter, generating a median 53.0 tokens per second compared with 22.0 tokens per second for DeepSeek V4 Pro 0423.