Runtime Behavior Control
Adjust model behavior in real-time without retraining. Steering vectors let you control outputs with precision.
Change model behavior instantly—no fine-tuning, no redeployment
Behavior control shouldn't require retraining
When model outputs aren't right, your options are limited. Fine-tuning is expensive and slow. Prompt engineering is fragile. You need a way to adjust behavior in production, immediately.
Retraining is expensive
Fine-tuning costs time, compute, and engineering resources. A small behavior change can mean weeks of work and thousands of dollars.
Prompting is fragile
Prompt engineering breaks with model updates and edge cases. What works today may fail tomorrow when the provider updates their model.
Behavior is inconsistent
Models produce different outputs for similar inputs. Without fine-grained control, you're at the mercy of model variance.
Experimentation is slow
A/B testing behavior changes requires deploying different models or prompts. Iteration cycles are measured in days, not minutes.
"Steering vectors modify model activations directly—changing behavior without changing weights."
Control behavior at runtime
Steering vectors modify model activations to change behavior instantly. No retraining. No redeployment. Just API calls.
Steering vector API
Inject steering vectors via simple API calls. Works with any model—OpenAI, Anthropic, open source. No model modifications required.
Pre-trained vector library
Ready-to-use vectors for common behaviors: formality, conciseness, helpfulness, creativity, and more. Start controlling behavior immediately.
Custom vector training
Train custom steering vectors for your specific use cases. Capture the exact behavior you want from contrastive examples.
Built-in A/B testing
Experimentation framework to compare behavior changes. Measure impact on quality, latency, and user satisfaction.
Real-time adjustment
Change behavior instantly without deployment or retraining. Adjust steering strength on the fly to fine-tune outputs.
Composable vectors
Combine multiple steering vectors for nuanced behavior control. Layer formality with conciseness, or creativity with accuracy.
From integration to behavior change
Steer integrates with your existing inference pipeline. Add steering in minutes, not days.
Select vectors
Choose from pre-trained vectors or train custom vectors for your specific behaviors.
Integrate API
Add Steer to your inference pipeline with a few lines of code. Works with any model provider.
Experiment
A/B test different vectors and strengths to find optimal behavior for your use case.
Deploy
Roll out behavior changes instantly to production. Adjust on the fly as needed.
Plans for every scale
Dev
$200/month
50K inferences, API access, 10 vectors. For teams experimenting with behavior control.
Pro
$1,000/month
500K inferences, full vector library, A/B testing. For production applications.
Enterprise
Custom
Unlimited inferences, custom vectors, on-premise deployment, dedicated support.