AI Provider Setup · BYOK
GPT-5, GPT-4o, and o4-mini direct from OpenAI.
OpenAI is the vendor behind the GPT family and what most teams have an existing account with. Good pick when you've already budgeted on OpenAI, need GPT-5's very large 400K context, or want tight integration with the OpenAI tool ecosystem.
OPENAI_API_KEYSign up at platform.openai.com. The platform account is separate from your ChatGPT account — you can reuse the same email.
Open Billing and add a payment method with prepaid credit. OpenAI will not accept API calls without funded credit — this is a common first-time gotcha.
Navigate to platform.openai.com/api-keys. If your org uses projects, select the right project first.
Click Create new secret key, name it Admaxxer, and set permissions (All is fine; Restricted works if you want to scope it). Project keys start with sk-proj-, user keys with sk-.
OpenAI shows the full secret exactly once. Paste it into Admaxxer straight away.
Open Settings then AI Providers, find the OpenAI row, paste the key, and click Connect.
gpt-5 is our recommended pick — 400K context and best reasoning. Use gpt-4o for a balanced workhorse, o4-mini for cheap reasoning.
Confirm the key starts with sk- or sk-proj-, billing is funded (not just a card on file — you need credit too), and the project has model access.
Once you've pasted your key into /settings/ai-providers, hit Test. Admaxxer makes a single no-cost call against the provider's /v1/models (or equivalent) endpoint and reports back:
These are the pinned model IDs Admaxxer tests against. The model picker in chat will show these plus any live-catalog entries the provider returns.
| Model ID | Display name | Context | Tools | Best for |
|---|---|---|---|---|
gpt-5 |
GPT-5 (recommended) | 400K | Yes | Flagship — 400K context and best GPT reasoning. Default pick. |
gpt-4o |
GPT-4o | 128K | Yes | Balanced workhorse — cheaper than GPT-5, strong on tools and multimodal. |
o4-mini |
o4-mini | 200K | Yes | Cheap reasoning-style model. Good for chain-of-thought on a budget. |
When it happens: On Connect if the key is wrong or was revoked.
Fix: Create a new key at platform.openai.com/api-keys. Keys cannot be recovered — always rotate.
When it happens: Under sustained load, especially on lower-tier accounts.
Fix: OpenAI has tiered per-minute limits. Request a tier bump at platform.openai.com/account/limits.
When it happens: When your prepaid credit drops to zero.
Fix: Top up at platform.openai.com/account/billing. OpenAI does not auto-recharge unless you enabled it.
When it happens: If the project does not have the selected model enabled.
Fix: Go to platform.openai.com/account/limits and request model access for the project.
When it happens: If your key was created in a different org than expected.
Fix: Create the key while viewing the correct org in the top-left org switcher.