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DeepSeek · GPT
DeepSeek vs GPT: what changes when the model costs a tenth as much
The interesting question is not which is better on a single answer. It is which lets you run the model ten times, or on every commit, or over the whole document, without thinking about the bill.
A
DeepSeek
DeepSeek
- Reached for
- Reasoning and code at a fraction of what the frontier labs charge, which changes what is worth running at all.
- Character
- The reasoning variants show their work, which makes them unusually easy to check: you can see where the chain went wrong rather than only that it did.
- Where it costs you
- Less polished on open-ended writing, and the ecosystem around it is thinner than the American labs'.
- Getting a key
- Paid, but cheap enough that most people never notice the bill.
B
GPT
OpenAI
- Reached for
- Breadth: the widest tooling, the most integrations, and the model most third-party software assumes you are using.
- Character
- The generalist. Rarely the single best answer to a specialised question and rarely a bad one, which is why it ends up as the default in most products.
- Where it costs you
- Being everywhere means being tuned for everyone, so on a narrow task a specialised model often reads better.
- Getting a key
- Paid through OpenAI, or free through GitHub Models.
Where they actually disagree
The part a specification sheet cannot tell you.
On a hard reasoning problem the reasoning variants of DeepSeek show their working, which makes them easier to audit than a confident paragraph from a stronger model. On open-ended writing the polish gap is still visible.
Which one to pick
| Pick | When |
|---|
| DeepSeek | Cost is a real constraint, you want to run the model many times rather than once, or you want to see the reasoning rather than just the conclusion. |
|---|
| GPT | You want the ecosystem, the integrations, and a model that is a safe default on any task without checking first. |
|---|
| Both | The answer is going into something that matters and you would rather see two readings and the gap between them than trust one. |
|---|
Settle it on your own question
Every comparison you can read, including this one, is somebody else describing their
workload. The only comparison about your work is the one you run.
Agent Mesh puts DeepSeek and GPT on the same question at the same time. Each answers
without seeing the other, then reads what the other said and states what it thinks is wrong,
and the debate converges on one answer with the disagreement left visible underneath it.
Both run on API keys that belong to you, so nothing about this goes through us and there is
no per-answer cost on our side to pass on.
Read runs other people have published, or start your own.
Try both, without paying for either
Five of the twenty-seven providers Calik AI supports give out working keys at no cost, with
no card and no trial clock. Connect two of them and Agent Mesh has something to compare.
Get a free key
Open the workspace
Questions people ask first
Is DeepSeek better than GPT?
Not as a general statement, and anyone who says otherwise is describing their own workload. On a hard reasoning problem the reasoning variants of DeepSeek show their working, which makes them easier to audit than a confident paragraph from a stronger model. On open-ended writing the polish gap is still visible. The comparison that settles it is the one run on your own question, which is what Agent Mesh does: both models answer, read each other, and the disagreement is left on the page.
Can I use DeepSeek and GPT at the same time?
Yes. Calik AI keeps a separate key per provider, so both can be connected at once and Agent Mesh can put them on the same question. That is the setup we would recommend over choosing: two independent answers and the points where they contradict each other is more information than either answer alone.
What does it cost to try both?
Nothing on our side: the workspace runs on API keys you supply, so we never touch the inference bill. On the provider side it depends which two you pick. DeepSeek: paid, but cheap enough that most people never notice the bill. GPT: paid through OpenAI, or free through GitHub Models. Five of the twenty-seven providers we support hand out working keys at no cost, listed on the free access page.
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