GPT collection

GPT API Family

Compare GPT-5.5 and GPT-5.4 for reasoning, coding, agent workflows, and production chat APIs.

Model comparison

Model	Best For	Input	Output	Context	Cached
Flagship	Advanced reasoning, complex coding, and highest-quality production agents.	1 credit / 1K	4 credits / 1K	1M	0.1 credit / 1K
Balanced	Strong reasoning and reliability for mature production workflows.	1 credit / 1K	4 credits / 1K	400K	0.1 credit / 1K

Choose flagship

Use the top model when correctness, reasoning depth, and coding reliability matter more than cost.

Choose balanced

Use value models for assistants, automation, support, and workflows that still need strong quality.

Choose budget

Use lightweight models for routing, classification, extraction, and high-volume background tasks.

Use cases

Build with GPT API Family

Prototype and ship features on Text & Coding models without managing multiple provider SDKs.

Scale in production

Route across the family by changing the model id — pricing, channels, and fallbacks stay on the platform.

Compare and switch

Evaluate versions side by side, then move traffic between models without rewriting integration code.

Unified access

One API surface for the whole family

Keep product code stable while changing models, providers, pricing, and channel routes from the platform.

curl https://apiany.ai/v1/chat/completions \
  -H "Authorization: Bearer $APIANY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.5",
    "messages": [{ "role": "user", "content": "Plan an agent workflow" }]
  }'

FAQ

How do I call GPT API Family models through APIAny?

Send requests to one OpenAI-compatible APIAny endpoint with a single API key, and set the public model id in the request body — no provider-specific SDKs required.

How is GPT API Family billed?

Usage is paid from prepaid APIAny credits at the rates shown in the comparison table. Credits never expire and there is no subscription.

Can I switch models in the GPT API Family family without changing code?

Yes. Change only the model id in your request — endpoint, auth, and response format stay the same across the family.

Which Text & Coding model should I choose?

Use the comparison table and the How to choose guidance above: pick flagship for quality, balanced for everyday production, and budget for high-volume tasks.