← All Models

Claude Opus 5 vs DeepSeek-V4-Flash-0731

Claude Opus 5 leads in 3 of 8 categories

Arena ELO

Tie

Cheaper

Claude Opus 5

Faster

Tie

Detailed Comparison

CategoryClaude Opus 5DeepSeek-V4-Flash-0731
ProviderAnthropic DeepSeek
Context Window200K WINuncertain
Input Price ($/1M)$15 WINN/A
Output Price ($/1M)$75 WINN/A
Arena ELON/A N/A
CodingN/A N/A
ReasoningN/A N/A
Speed (tokens/sec)N/A N/A
Open SourceNo Yes

Frequently Asked Questions

Which has a larger context window?

Claude Opus 5 supports 200K context, while DeepSeek-V4-Flash-0731 supports uncertain.

Is Claude Opus 5 or DeepSeek-V4-Flash-0731 open source?

Claude Opus 5 is proprietary. DeepSeek-V4-Flash-0731 is open source.

Related Articles

Try Claude Opus 4.7 and read its benchmarks

Claude’s security test became a real breach

Claude’s 2026 limit changes are a capacity story, not a product story

Cognizant’s Claude play turns pilots into production

Prompt engineering is overrated for Claude Code

Claude Opus 5 posts the lowest safety audit score

More Comparisons

Claude Opus 5 vs Claude Opus 4.5Claude Opus 5 vs Llama 4 ScoutClaude Opus 5 vs Claude Haiku 4.5Claude Opus 5 vs Qwen 3.6Claude Opus 5 vs Kimi K2.7 CodeClaude Opus 5 vs MiniMax H3Claude Opus 5 vs Llama 4 MaverickClaude Opus 5 vs GPT-5.3-CodexDeepSeek-V4-Flash-0731 vs Claude Opus 4.5DeepSeek-V4-Flash-0731 vs Llama 4 ScoutDeepSeek-V4-Flash-0731 vs Claude Haiku 4.5DeepSeek-V4-Flash-0731 vs Qwen 3.6DeepSeek-V4-Flash-0731 vs Kimi K2.7 CodeDeepSeek-V4-Flash-0731 vs MiniMax H3DeepSeek-V4-Flash-0731 vs Llama 4 MaverickDeepSeek-V4-Flash-0731 vs GPT-5.3-Codex