Compare Claude Opus 5.5 from Anthropic and DeepSeek Flash Latest 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.
| Attribute | Claude Opus 5.5 | DeepSeek Flash Latest |
|---|---|---|
| Input price | $4/M tokens | $0.006/M tokens |
| Output price | $20/M tokens | $0.50/M tokens |
| Context window | 1,000,000 tokens | 1,048,576 tokens |
| Intelligence Index | 59.1 | 28.6 |
| Coding Index | Not available | Not available |
| Agentic Index | Not available | Not available |
| Latency (p50) | 4.43 s | 1.10 s |
| Throughput (p50) | 66.0 tok/s | 61.0 tok/s |
| Provided by | Anthropic | DeepSeek |
| Model page | Claude Opus 5.5 model details, providers and pricing | DeepSeek Flash Latest model details, providers and pricing |
Benchmark data updated
DeepSeek Flash Latest is cheaper than Claude Opus 5.5 on OpenRouter: DeepSeek Flash Latest costs $0.006/M tokens input and $0.50/M tokens output, while Claude Opus 5.5 costs $4/M tokens input and $20/M tokens output.
DeepSeek Flash Latest has the longer context window at 1,048,576 tokens, compared with 1,000,000 tokens for Claude Opus 5.5.
Claude Opus 5.5 is faster on OpenRouter, generating a median 66.0 tokens per second compared with 61.0 tokens per second for DeepSeek Flash Latest.