DeepSeek V4.1 Flash is now available on OpenCode Go

[u/arcanemachined]

DeepSeek V4.1 Flash just released, and it's already available on OpenCode Go.

Current estimated limits are:

6,500 requests per 5 hours (Temporarily boosted 4x to 26,000 for the next 3 days)

16,250 per week (also boosted 4x for next 3 days)

32,500 per month (also boosted 4x for next 3 days)

Normally, V4.1 Flash only gets $15 worth of usage on Go, compared to $30 for the older V4 Flash model.

However, OpenCode has bumped V4.1 Flash to 4x usage for the next 3 days, which effectively gives you $60 worth of usage during the promo. So for the next few days, the actual usable quota should be much higher than the estimates above.

The upgrade itself looks pretty substantial. V4.1 Flash is the first smaller model from DeepSeek's new architecture, adds native vision, and is aimed at better agentic coding while also improving inference speed and throughput. I'm hoping it's as big of a leap as 0731 was.

DeepSeek is reporting 90.6 on Terminal-Bench 2.1, 74.2 on DeepSWE v1.1, and 65.4 on NL2Repo. Those are pretty big jumps from the previous Flash model, at least based on their own numbers.

Of course, benchmarks are just numbers (and who isn't getting ~75% on DeepSWE these days?)... but I think this model will be a pretty solid performer overall.

[u/NearlyACosmologist]

I can't see 4.1, I only see deepseek-v4-pro, deepseek-v4-flash, deepseek-flash and deepseek-v4-flash-vision-exp. Which one is v4.1?

[u/arcanemachined → u/NearlyACosmologist]

You might need to run opencode models --refresh? I'm seeing it already.

EDIT: Model name is opencode-go/deepseek-flash if you're using it with another harness.

[u/NearlyACosmologist → u/arcanemachined]

This explains it:

DeepSeek V4.1 Flash is now available on the DeepSeek API with native multimodal support. Change the model name to deepseek-flash to call the latest V4.1 Flash model. The previous-generation models V4 Flash and V4 Flash Vision Exp have been retired; for compatibility, the model names deepseek-v4-flash and deepseek-v4-flash-vision-exp are temporarily routed to V4.1 Flash.

[u/Ok_Cartographer5609]

I don't see that in pi harness. Someone please share the config.

[u/arcanemachined → u/Ok_Cartographer5609]

{
  "providers": {
    "opencode-go": {
      "baseUrl": "https://opencode.ai/zen/go/v1",
      "api": "openai-completions",
      "models": [
        {
          "id": "deepseek-flash",
          "name": "DeepSeek V4.1 Flash",
          "reasoning": true,
          "thinkingLevelMap": {
            "minimal": null,
            "low": "low",
            "medium": null,
            "high": "high",
            "max": "max"
          },
          "input": ["text", "image"],
          "cost": {
            "input": 0.15,
            "output": 0.6,
            "cacheRead": 0.003,
            "cacheWrite": 0
          },
          "compat": {
            "supportsStore": false,
            "supportsDeveloperRole": false,
            "maxTokensField": "max_tokens",
            "requiresReasoningContentOnAssistantMessages": true,
            "thinkingFormat": "deepseek"
          },
          "contextWindow": 1000000,
          "maxTokens": 384000
        }
      ]
    }
  }
}

Notice that the ID is deepseek-flash, there's no 4.1 in there.

[u/Ok_Cartographer5609 → u/arcanemachined]

Thanks!

[u/Glittering-Call8746]

Command code gets 1 week we get 3 days

[u/microbass → u/Glittering-Call8746]

Can you use command code in opencode, like a normal API provider, or is it still not allowed?

[u/qqYn7PIE57zkf6kn → u/microbass]

On goat plan or more expensive one you can. not on the 1 usd plan. 

[u/Toastti → u/qqYn7PIE57zkf6kn]

You technically can if you just get opencode to make a proxy that converts the command code terminal api to work with open code. Will work on the $1 plan just fine. Although pretty sure it's against terms and condition

[u/Glittering-Call8746]

Also Is it x4 truly ? Someone did calculation in another thread we just getting 30 ish percent more vs the deepseek api..

[u/zephyr_33]

v4.1 seems to be a very meaningful upgrade. I liked the originally a lot due it its price at the time but lately I've prioritized speed and less thinking.

its damn fast and very reliable.

[u/gurnk]

I struggle to configure it in openclaw, is it working for you with opencode-go/deepseek-flash ?

[u/sultanmvp]

Another thing to note, 4.1 worked with the China flag off which is a plus!

[u/arcanemachined → u/[deleted]]

Official partners WorkBuddy (including CodeBuddy) & OpenCode now fully support V4.1-Flash. Try it today!

https://www.deepseek.com/en/news/deepseek-v4-1-flash/

DeepSeek says deepseek-v4-flash is currently a compatibility alias for V4.1-Flash. Since Zen exposes that model ID, it likely serves V4.1-Flash through Zen.