FLUX.2 Klein 4B API
Access FLUX.2 Klein 4B through a simple, OpenAI-compatible API. Change one URL and one key — your existing code works immediately. No SDK changes needed.
FLUX.2 Klein 4B Pricing
| Token Type | Qubax | Retail | Save |
|---|---|---|---|
| Input (per 1M) | $0 | $0 | — |
| Output (per 1M) | $0 | $0 | — |
At $0/1M input tokens, FLUX.2 Klein 4B is one of the most affordable APIs in its class.
Why use FLUX.2 Klein 4B API on Qubax?
- ⚡Point your OpenAI SDK at https://api.qubax.ai/v1
- ⚡Use model ID: flux.2-klein-4b
- ⚡Generate API keys starting with qbx_live_
- ⚡Full streaming, function calling, and vision support
Get started in 60 seconds
- 1Create a free account at qubax.ai/register
- 2Add crypto credits (200+ coins, $3 minimum, credits never expire)
- 3Generate an API key and set your base URL to
https://api.qubax.ai/v1 - 4Use model ID
flux.2-klein-4b— done!
FLUX.2 Klein 4B API Access FAQ
How much does FLUX.2 Klein 4B cost API?
On Qubax, FLUX.2 Klein 4B costs $0 per 1M input tokens and $0 per 1M output tokens. Pay with 200+ cryptocurrencies.
Can I use FLUX.2 Klein 4B with my existing tools?
Yes. Qubax is fully OpenAI-compatible. Change your base URL to api.qubax.ai/v1 and use your Qubax key. Works with Cline, Cursor, OpenCode, LangChain, and any OpenAI SDK.
Do I need a credit card?
No. Qubax accepts 200+ cryptocurrencies. No credit card, no KYC. New users get free credits to start.
Start using FLUX.2 Klein 4B API
Free credits on signup. No credit card. Crypto accepted.
Get started — $1 free credits →