Performance Tiers
Balance speed and cost with performance tiers
Available Tiers
Nunchux Optimized models
The Radical Speed tier delivers the lowest latency, while Radical Value gives the lowest cost per image. Both tiers run on Nunchux’s proprietary Model Optimizer and Inference Engine. Together they give the best tradeoff between speed, cost, and quality on the market. These tiers apply to the FLUX, Qwen and HiDream O1 models. Ideogram 4 has three other tiers: Turbo (12 steps), Balanced (20 steps) and Quality (48 steps). The step count selects the tier, and the price is per image. The LTX video models have two other tiers, 720p and 1080p. The output size selects the tier, and the price is per second of video.Partner models
Partner models do not use the Nunchux tiers. Each one prices on its own terms, such as output size, resolution, or mode. See the pricing page for current per-model rates.Tier Comparison
Send a Tier in a Request
Set thetier field in your API request:
Tier and Model Combinations
Each tier and model combination has a different use. The Qwen model with the Radical Speed tier gives the lowest latency. Use this combination for real-time previews and interactive applications.Workflow Recommendations
- For development and test, use Radical Speed. It has the lowest latency.
- For high-volume batch jobs, use Radical Value. It has the lowest cost per image.
- For production, use Radical Speed if latency is important. Use Radical Value if cost per image is more important.