Runtime control infrastructure for enterprise AI

Move Fast
Build ReliableTM

When AI systems draft analysis, summarize policy, or run multi-step workflows, they can drift gradually and invisibly.

Assiduity provides runtime control infrastructure for generative AI,
keeping outputs aligned to the operating contract and recording telemetry
that shows how the system behaved.

assiduity /əˌsijooˈidədē/ constant care, attention, and persistence in the work at hand.
Where it sits in your stack

A control layer between
the workflow and the model.

Semantic Operating Contract

Required concepts · Prohibited terms
Task constraints · Policy boundaries
Workflow expectations

Enterprise App / Agent
Assiduity Runtime Control Layer
Model Endpoint any provider
Controlled Output Task-aligned generation
ε Telemetry Constraint behavior · Drift trajectory
Branching decisions
Governance signals

Provider-agnostic No retraining OpenAI-compatible proxy One API endpoint change

The problem

AI systems do not only fail. They drift.

Across long outputs, multi-step workflows, and agentic systems, small deviations compound into material departures from the original task, policy, or constraint. A document that begins with the right framing can finish in the wrong place. An agent that starts on task can lose the thread across tool calls. The output looks fluent. The drift is invisible until it matters.

Prompting defines intent before generation begins. Post-hoc review checks the result after it ends. Neither controls what happens in between.

Category

Not guardrails.
Not evals.
Not a bigger model.

Common approach What it does The gap Assiduity
Prompt engineering Defines the task before generation Cannot correct what happens after the first token Controls generation against the contract while the output is being produced
Post-hoc evaluation Reviews the final output for quality or compliance Finds issues after drift has already happened Records the generation path and produces telemetry as it unfolds
Observability / logging Shows what the model produced Describes output; does not influence it Adds a control layer that scores and selects continuations in real time
Larger or fine-tuned models Improve baseline capability Do not guarantee objective persistence across long horizons Improves reliability of any model, including smaller ones, without retraining
The control layer

Runtime control
during generation.

Assiduity’s core technology, Equilibrium-Constrained DecodingTM, evaluates candidate continuations against a semantic operating contract while the model is generating.

01

Define the contract

Specify the operating contract for the task: required concepts, source facts to cover, prohibited terms, policy boundaries, and workflow constraints.

02

Control generation

Score candidate continuations against the contract and select the one that stays closest to the objective. Drift is corrected before it compounds, not detected after it arrives.

03

Produce telemetry

Every generation produces a structured record: ε trajectory, constraint behavior, branching decisions, completion signals, and stop reasons.

Contract adherence ε telemetry Constraint visibility Audit artifacts
Where it matters

Built for workflows where
drift is costly.

Long outputs. Defined constraints. Consequences when the output drifts.

Proof signals

What the research shows.

99% documents improved
d = 1.64 effect size vs. greedy baseline
3 model families
2 corpora
consistent results without model-specific tuning

Controlled evaluations show consistent drift reduction across long-form government reports, scientific papers, and large-model settings. Placebo tests indicate the effect depends on the semantic content of the operating contract — not simply on sampling, reranking, or applying an uninformative selection rule.

Insights

Latest Thinking

FAQ

Frequently asked questions

What is Assiduity?

Assiduity builds runtime control infrastructure for generative AI systems. The goal is to help enterprises keep long outputs, workflows, and agents aligned with operating contracts while producing telemetry that supports review, governance, and audit.

What is runtime control?

Runtime control means applying constraints while the model is generating, not only before generation through prompting or after generation through review. It gives the system a way to monitor and correct behavior during the generation path.

What is Equilibrium-Constrained Decoding?

Equilibrium-Constrained DecodingTM is Assiduity’s patent-pending control approach. At a high level, it evaluates candidate continuations against a semantic operating contract and selects continuations that remain closer to the intended objective.

Does Assiduity replace the model?

No. Assiduity is designed to sit above model providers as a runtime control layer. The current implementation can operate through an OpenAI-compatible proxy without requiring the enterprise to replace the underlying model.

Does it require model retraining?

No. Assiduity applies control at generation time. That allows teams to evaluate runtime behavior without modifying model weights or retraining the base model.

How is this different from prompting?

Prompting states the task before generation begins. Assiduity focuses on what happens after that: whether the output continues to follow the task, policy, and constraints as the model generates.

How is this different from post-hoc evaluation?

Post-hoc evaluation reviews the final output. Assiduity records and influences the generation process itself, producing telemetry about constraint behavior, ε trajectory, branching decisions, completion signals, and stop reasons.

How is this different from fine-tuning or RLHF?

Fine-tuning and RLHF improve a model’s baseline behavior by modifying its weights. Assiduity operates at inference time without touching the model. It can be deployed as a control layer above any model — including models that have already been fine-tuned — and can be evaluated, updated, or removed without retraining.

Can Assiduity help with smaller or lower-cost models?

Assiduity can improve the operating reliability of smaller and lower-cost models by applying control during generation. It does not make every smaller model equivalent to a frontier model, but it can reduce the need to rely on the largest model for every controlled workflow.

What does the protected demo show?

The demo compares baseline generation with ECD-controlled output and displays the telemetry behind the generation path, including constraint satisfaction, ε behavior, branching, and governance signals.

Who should request access?

Enterprise AI teams, design partners, researchers, investors, and governance reviewers evaluating reliable generative AI workflows may request access to the protected demo and additional materials.

Controlled review

Ready to evaluate
runtime control?

Assiduity is available for controlled review with selected enterprise teams, design partners, researchers, and prospective investors.

Evaluated across government reports, scientific papers, and large-model settings.