minimax m3 has a 1M token context window so not sure how op is hitting this 200k. maybe the plan they're on? or some setting in some layer of whatever their dev tooling is using.
I did a quick look for 200k models on OpenRouter. There's a lot of previous-gen Minimax 2.5 & 2.7, GLM 5.1 that are around 200k.
But also on the list at 200k are "Free Models Router" and "Claude Haiku 4.5". I would not recommend making any judgment of AI based on free models. And coding with Haiku is a bad idea... I mean, that was my first code AI test too, but it's just not an accurate impression.
To be fair, Opus 4.1 & 4.5 are also listed as 200k. They did require context management for large & difficult tasks. But if you do have access to Opus, there's very little reason not to switch to 4.8 / Sonnet 1 Million now. I wouldn't recommend Sonnet, but I have used it to write a USB audio driver that got some hardware working on an obscure OS, so it can work.
But also on the list at 200k are "Free Models Router" and "Claude Haiku 4.5". I would not recommend making any judgment of AI based on free models. And coding with Haiku is a bad idea... I mean, that was my first code AI test too, but it's just not an accurate impression.
To be fair, Opus 4.1 & 4.5 are also listed as 200k. They did require context management for large & difficult tasks. But if you do have access to Opus, there's very little reason not to switch to 4.8 / Sonnet 1 Million now. I wouldn't recommend Sonnet, but I have used it to write a USB audio driver that got some hardware working on an obscure OS, so it can work.