// Halo
Gemini vs ChatGPT — how they compare, and how to run either without a subscription
How Gemini and ChatGPT stack up on context, multimodal work, reasoning and price — and how to run either without a subscription.
Gemini vs ChatGPT comes down to shape of work more than a league table. Both are frontier models; they’re built with different centres of gravity.
At a glance
| Gemini | ChatGPT (GPT-class) | |
|---|---|---|
| Long context | A core strength | Strong |
| Multimodal | Broad, natively central | Broad |
| General reasoning | Strong | Strong |
| Ecosystem | Tied to Google’s | Widest third-party tooling |
| On Halo | Pay per prompt, no account | Pay per prompt, no account |
Where each one tends to win
Gemini is the one to reach for when the input is large — a long document, a sprawling codebase, mixed media you want reasoned over in one pass. Long context handled well is a genuinely different capability, not just a bigger number.
GPT-class models hold the edge on breadth: the widest surrounding tooling and the most third-party integrations, which matters more the further your work sits from a single chat box.
Run both and stop guessing
Every published comparison is someone else’s workload. On Halo you can settle it on yours: both models sit behind one sign-in, you pay per prompt in USDC on Base, and the comparison costs only the prompts you send — no Google plan, no OpenAI plan, no account with either.
Start with Gemini or GPT-5. Also worth a look: Claude vs ChatGPT, and how to use Halo on the web.
Frequently asked questions
Is Gemini better than ChatGPT?
It depends on the shape of the task. Gemini's long-context and multimodal handling is its strongest suit, which makes it a good fit for reasoning over large documents or mixed media. GPT-class models are strong generalists with broader surrounding tooling. Run your own prompts through both before deciding.
Which handles long documents better?
Gemini is usually the first choice for very long context — summarising or reasoning across large documents in one pass. If your work is mostly long-document analysis, start there.
Can I use both without two subscriptions?
Yes. On Halo both sit behind one sign-in and you pay per prompt in USDC on Base, so running the same prompt through each costs only the prompts themselves — no plan for either provider.
Which is more private on Halo?
Identical treatment for both: the prompt is encrypted to the operator, confidential mode can seal it inside a hardware enclave (TEE) the operator can't read, and every result carries a proof that the real model ran.