If you have no need for Anthropic/OpenAI's frontier model capability, you may be better served with an open-weight model that can't be taken away.
Edit:
> GPT-5 does the job.
I bring up DeepSeek V4 Flash a lot on HN, but I want to mention that according to Artificial Analysis, it trades blows with GPT-5 (high) (from August, 2025) [0]
[0]: https://artificialanalysis.ai/models/comparisons/deepseek-v4...
It’s my daily driver in opencode
Unless you are hosting it yourself on your own infrastructure it absolutely can be taken away.
Deepseek V4 flash is actually useless. Sorry I've tested it after seeing so many comments like these. On Open router when trying to get it to output tool calls for creating tables, instead of providing the structured output correctly it was sending me peoples dropbox links and other image sharing site urls that led to pictures of random tables...
Llms seem to only impress a certain type of person. Hint, this type of person also was really excited about NFTs.
[dead]
We rolled out Deepseek V4 Flash to our customers and it was an absolute disaster, unfortunately. It was not able to follow simple commands, always "forgot" to do things, lied consistently about its work, and so on. It was pretty good though on on-off work, like summarizing something or executing simple commands, so we are experimenting now with using it for subagent work with clear instructions and hand off.
Deepseek V4 Pro on the other hand is a really really good main driver and we have a lot of success using it. Its not Opus or GPT-5.5 level but on its way. Kimi 2.6 as well btw.. so there is already quite some choice.