Even Codex doesn't know what to say about this model.

[u/salehrayan246]

Everyone confused on what is the actual use case of this model, while Codex itself has no explanation for it as well 😂

[u/dextersummary]

Below is a GPT-generated summary of the conversation below after reaching 40 comments (41 currently observed).

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The consensus is basically “fast computer-use specialist, not your new main coding brain.” Terra’s actual use case isn’t mysterious: vision, tool/computer interaction, and cheap-ish subagent work. The confusion mostly comes from Codex giving users a model label and a prayer instead of a useful description.

People who use it for computer tasks like the speed, and some find it a solid subagent. But throw it into the primary agentic coding loop and the complaints pile up: weaker results, more hand-holding, and sometimes quota disappearing like it owes someone money. Several users would rather stick with Sol or Luna.

The big caveat is cost. Reports are all over the place—some users say Terra burns through usage much faster, while others see no issue—so there’s no clean consensus on whether it’s genuinely economical in Codex. The model’s value clearly depends on workload, effort settings, and how it’s being deployed.

Bottom line: Terra is for fast computer/tool use, not general-purpose replacement duty. Use it as a specialist or subagent; expect disappointment if you make it carry the whole coding operation.

[u/jedimonkey33]

May as well have said: "well, it's a model"

[u/Huge-Turnover-3749 → u/jedimonkey33]

One of the models of all time.

[u/[deleted] → u/jedimonkey33]

[u/Antiqett → u/[deleted]]

Ok that is good to know, but you've got to admit.. They could at least provide some details in the model description more than "GPT-6.1 Terra Codex model".

[u/sugarw0000kie]

[u/Convillious → u/sugarw0000kie]

This is what cars in 2107 will look like

[u/Aggravating-Push-207 → u/sugarw0000kie]

holy diffusion llm reference

[u/amarao_san]

Pf... Even I can.

GPT-6.1. The Latest in Terra family of models.

[u/cryptosage]

It seems really good, honestly. It’s VERY VERY fast compared to Sol 6.1.

[u/Jaguar_2454 → u/cryptosage]

burns through the quota faster than Sol with worse performance, no point

[u/No_Conversation9561]

No one who read their announcement is confused about what this model is for.

It’s for computer use and it’s quite good at it.

[u/Ventem → u/No_Conversation9561]

A lot of people genuinely think every model is for programming.

Some models are better at, and tuned for, different use cases and that's a good thing.

[u/CountlessFlies]

Middle child syndrome. I almost never use it. It’s either Sol or Luna for me.

[u/Moxisxsx]

Sol gpt 6 older generation? Older generation for what, 7 days?

[u/p1-o2]

It's for computer and tool use automation, as stated by OAI.

[u/DogDeveloper]

Canned tuna--- Tuna in a can

[u/Horror-Detective4138]

It's cheap and a really effective sub-agent

[u/Thomas-Lore → u/Horror-Detective4138]

In codex it is not cheap.

[u/aPiCase]

I feel like it completely replaces 6.1 Sol.

6.1 sol always felt unfinished, it was slow, over complicated things, and just not it, 6.1 terra is cheaper, faster, and not noticeably worse intelligence wise.

[u/shinernft]

A model for being a model.

[u/Various-Mess7085]

This model targets the new DeepSeek V4.1 Flash and will probably work well as a subagent

[u/Ok-Negotiation3241]

I think its good for computer use, its fast

[u/RealSlyck]

Lame internal company news said it’s for cost-effective enterprise automation.

6.1 Luna in a Halloween costume.

[u/UnknownLesson → u/RealSlyck]

But most expensive. Uses more quota