FrontierAugust 12, 2026via Simon Willison
DeepSeek V4 Pro 0813 (on OpenRouter)
Why it matters
DeepSeek continues iterating on its frontier reasoning model, making it widely available via OpenRouter API. A datapoint on the lab-race velocity and the cost-capability envelope practitioners are evaluating.
Key signals
- DeepSeek V4 Pro 0813 release
- Available on OpenRouter API
- Timing: August 12, 2026
- Frontier model iteration with focus on reasoning
- Cost-capability positioning vs. competitors
The hook
DeepSeek ships V4 Pro 0813 on OpenRouter. Early signals on reasoning and cost vs. frontier rivals.