PROVIDER ALTERNATIVE
OpenAI API alternatives: switch to LLMFly for lower model costs
Choose an OpenAI API alternative by the endpoints your application calls. A working Chat Completions request does not establish support for Responses, Realtime or hosted tools. Compare prices only after the required request paths work.
Sources reviewed October 5, 2026
01
OpenAI API cost estimate
Enter token counts for one representative request; every usage item is multiplied by the request count.
ChatGPT(Codex)0.3xCurrent multiplier
Vendor reference cost$1.50Estimated savings$1.0570.0%
Cost breakdown
Rates are per 1M tokens- LLMFly AI
- $3
- Vendor reference
- $10
- Total tokens
- 100,000
- LLMFly AI
- $15
- Vendor reference
- $50
- Total tokens
- 10,000
- LLMFly AI
- $3.75
- Vendor reference
- $12.5
- Total tokens
- 0
- LLMFly AI
- $0.3
- Vendor reference
- $1
- Total tokens
- 0
What must the replacement support?
List endpoint, model ID, tool schema and conversation-state dependencies. Keep direct OpenAI calls for features the selected LLMFly group has not documented or passed in your tests; migration can cover only part of the application.
What changes in my current client?
Make base URL, API key and model ID configurable. Verify the exact endpoint first: Chat Completions compatibility does not establish Responses, Realtime, file or tool support. Run streaming and tool tests before shifting production traffic.
What should you test before switching?
Replay a normal reply, a streamed reply, a tool round trip and an invalid request. Check event parsing, structured output, error handling and billed usage. Compare synchronous calls with synchronous rates; evaluate Batch jobs separately.
Sources: OpenAI API pricing ↗
Frequently asked questions
Will my Responses conversation state transfer?
Do not assume stored response IDs or hosted resources are portable. Verify state handling on the target endpoint and keep a tested way to reconstruct the conversation from your own application records.
Make your next model call with LLMFly
Choose a model group, get an API key and follow the guide for your first request.