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[ARTICLE · art-82642] src=simonwillison.net ↗ pub= topic=artificial-intelligence verified=true sentiment=· neutral

deepseek-ai/DeepSeek-V4-Flash-0731

DeepSeek released DeepSeek-V4-Flash-0731, a model that Artificial Analysis ranks ahead of MiniMax M3, a 428B model, and at $0.14 per million input tokens and $0.27 per million output tokens it may be the best value-per-intelligence model available. Simon Willison found that using the default reasoning level via OpenRouter produced disappointing results, but increasing the reasoning effort to high yielded much better output.

read1 min views1 publishedJul 31, 2026

deepseek-ai/DeepSeek-V4-Flash-0731 Artificial Analysis rank it ahead of MiniMax M3 - a 428B model. It's $0.14/million input and $0.27/million output pricing means this may currently be the best value-per-intelligence model out there. It's looking very good on the Intelligence Index vs. Cost per Intelligence Index Task chart:

I got a disappointing pelican from it using the default reasoning level via OpenRouter:

But when I bumped reasoning level up to high I got something much better:

`llm -m openrouter/deepseek/deepseek-v4-flash-0731 -t pelican -o reasoning_effort high`

Via [Hacker News](https://news.ycombinator.com/item?id=49120299)

Tags: [ai](https://simonwillison.net/tags/ai), [generative-ai](https://simonwillison.net/tags/generative-ai), [llms](https://simonwillison.net/tags/llms), [pelican-riding-a-bicycle](https://simonwillison.net/tags/pelican-riding-a-bicycle), [deepseek](https://simonwillison.net/tags/deepseek), [llm-release](https://simonwillison.net/tags/llm-release), [openrouter](https://simonwillison.net/tags/openrouter), [ai-in-china](https://simonwillison.net/tags/ai-in-china), [artificial-analysis](https://simonwillison.net/tags/artificial-analysis)
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