- Organizations
- Black Forest Labs
- Flux 2 Flex
Flux 2 Flex: Pricing, Performance & Examples
Flux 2 Flex is a image generation model from Black Forest Labs, released in January 2025, with a 4K-token context window.
Max-quality image generation and editing with support for ten reference images
Flux 2 Flex examples
Recent arena outputs from Flux 2 Flex, picked from the highest-ranked matchups.
Flux 2 Flex API
Set for image-to-image / editing models.
Run a request to see the response
Use it in your code
OpenAI-compatible endpoint through the LLM Stats gateway.
import requests
# Create the generation. wait="auto" long-polls (up to 60s) so most short
# jobs return as "completed" in a single round-trip.
res = requests.post(
"https://gateway.llm-stats.com/v1/generations",
headers={"Authorization": "Bearer YOUR_API_KEY"},
json={
"model": "flux-2-flex",
"input": {"prompt": "A beautiful sunset over mountains"},
"wait": "auto",
},
)
job = res.json()
# If it didn't finish inside the wait window, poll the same resource.
while job["status"] in ("queued", "running"):
res = requests.get(
f"https://gateway.llm-stats.com/v1/generations/{job['id']}",
params={"wait": 60},
headers={"Authorization": "Bearer YOUR_API_KEY"},
)
job = res.json()
if job["status"] == "completed":
print("image:", job["output"]["media"][0]["url"])
else:
print("Failed:", job["error"]["message"])Need an API key? Create one above in the playground, or read the API documentation.
Flux 2 Flex pricing
Providers
Flux 2 Flex starts at $0.0500 per generated image via Fal. See all 2 providers below with their per-image pricing, latency, and modality support.
| Provider | Price $/image | Latency s | Modalities in / out |
|---|---|---|---|
| $0.0500 | 0.00 | / | |
| $0.0600 | — | / |
Flux 2 Flex latency
Flux 2 Flex time to first token, sustained output throughput, and failed-request rate from live API traffic over the trailing 7 days.
Provider operational metrics
Time to first token, output throughput, and failed-request rate from live API traffic
Flux 2 Flex benchmarks
Rankings
Performance by category and language
Where Flux 2 Flex is strongest across prompt themes and languages. Conservative TrueSkill score (μ − 3σ), only axes with 3+ votes.
Quality Tracker
Similar Models
How Flux 2 Flex compares to its closest neighbors on each image arena it competes in.
Flux 2 Flex license
Flux 2 Flex is a proprietary model available under its provider's product and API terms.
- License
- Proprietary
- Hosted access
Proprietary license - usage restrictions apply
Models like Flux 2 Flex
Other image models ranked closest to Flux 2 Flex.
FAQ
Common questions about Flux 2 Flex.