Pricing, context window, capabilities, and release date — pulled from each provider's public docs. Both are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.
Both models stream in parallel through your own AIgateway key. Tokens, latency, and cost update as they arrive.
| OpenAI GPT Image 2 openai/gpt-image-2 | Flux-2-Klein-9b black-forest-labs/flux-2-klein-9b | |
|---|---|---|
| Provider | OpenAI | Black Forest Labs |
| Family | FLUX | |
| Modality | image | image |
| Context window | — | — |
| Max output | — | — |
| Released | 2026-04-23 | 2026-01-14 |
| Input price | $0.0000 /img | $0.040 /img |
| Output price | — | — |
| Cache read | — | — |
| Tools | — | — |
| Streaming | — | — |
| Vision | — | — |
| JSON mode | — | — |
| Reasoning | — | — |
| Prompt caching | — | — |
OpenAI's next-generation image model that creates and edits images from text prompts, with support for multiple quality levels, sizes, and output formats. Note: transparent backgrounds are not supported — use openai/gpt-image-1.5 for transparent PNGs.
FLUX.2 [klein] 9B is a 9 billion parameter model that can generate images from text descriptions and supports multi-reference editing capabilities.
# pip install aigateway-py openai
# aigateway-py: sub-accounts, evals, replays, jobs, webhook verify.
# openai SDK: chat/embeddings/images/audio — drop-in compat per our SDK's own guidance.
from openai import OpenAI
client = OpenAI(
base_url="https://api.aigateway.sh/v1",
api_key="sk-aig-...",
)
# Try OpenAI GPT Image 2
client.chat.completions.create(
model="openai/gpt-image-2",
messages=[{"role":"user","content":"hello"}],
)
# Try Flux-2-Klein-9b — same client, same key
client.chat.completions.create(
model="black-forest-labs/flux-2-klein-9b",
messages=[{"role":"user","content":"hello"}],
)