Flux 1.1 Pro vs Stable Diffusion — Which Is Better in 2026?
Flux 1.1 Pro vs Stable Diffusion: independent head-to-head scored on Performance, Value, Reliability, and Ease of Use. See scores, pros, cons, and our verdict.
Black Forest Labs
Flux 1.1 Pro
Best new open-source image model
Stability AI
Stable Diffusion
Best open-source image generator
8.2
Overall Score
WINNER8.0
Overall Score
Our Verdict
Flux 1.1 Pro scores higher overall (8.2/10 vs 8.0/10), winning on Performance and Reliability. Best new open-source image model. Near-Midjourney photorealism with open weights.
Pricing — Flux 1.1 Pro
Via Replicate from $0.003/image · Free if self-hosted
Pricing — Stable Diffusion
Free (self-hosted) · DreamStudio API credits
Flux 1.1 Pro
Pros
- ✓Near-Midjourney photorealism quality
- ✓Open-source weights — self-host for free
- ✓API access via Replicate, fal.ai, Together AI
Cons
- ✗No native web UI — requires third-party platform
- ✗Less community resources than Midjourney
- ✗Quality varies by hosting platform
Best For
Developers wanting API access, open-source workflows, photorealistic image generation
Stable Diffusion
Pros
- ✓Completely free to run locally
- ✓Unlimited generation — no restrictions
- ✓Massive model and LoRA ecosystem
Cons
- ✗Requires GPU for fast generation
- ✗Complex setup vs hosted solutions
- ✗Requires prompt engineering knowledge
Best For
Developers, researchers, power users, privacy-first generation
Choose Flux 1.1 Pro if…
- →Performance is your top priority — Flux 1.1 Pro leads by 0.8 points
- →Developers wanting API access
- →You also value Reliability — Flux 1.1 Pro wins that dimension too
Choose Stable Diffusion if…
- →Value is your top priority — Stable Diffusion leads by 1.5 points
- →Developers
- →Stability AI support, documentation, and community suit your team
Frequently Asked Questions
Is Flux 1.1 Pro better than Stable Diffusion?
Flux 1.1 Pro scores 8.2/10 overall vs 8.0/10 for Stable Diffusion, with an edge on Performance and Reliability and Ease of Use. That said, "Stable Diffusion" may be the better pick if value is your priority. The right choice depends on your use case.
What is the pricing difference between Flux 1.1 Pro and Stable Diffusion?
Flux 1.1 Pro: Via Replicate from $0.003/image · Free if self-hosted. Stable Diffusion: Free (self-hosted) · DreamStudio API credits. Compare usage volumes and features needed to determine total cost of ownership for your team.
Which is better for developers wanting api access?
Flux 1.1 Pro is generally stronger here, scoring 8.2/10 overall. Best new open-source image model. Near-Midjourney photorealism with open weights. For more niche requirements like value, Stable Diffusion may be worth evaluating.
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