Comparison Guide
Delvyn Studio vs GitHub Spec Kit
Delvyn Studio is a product management layer for teams using GitHub Spec Kit: Delvyn formalizes product intent upstream — vision, OKRs, and discovery — and generates specs that Spec Kit and other coding agents execute. It starts free and costs $9/leader/month with engineers always free.
Both believe specs should drive code, not the other way around. Spec Kit does it inside the coding agent for developers. Delvyn does it upstream for product teams — where strategy, discovery, and OKRs decide what to build.
When is Spec Kit enough?
Spec Kit's specify → plan → tasks → implement loop is a real spec-driven workflow for engineers. Here's when it's all you need.
Spec Kit is enough when…
- You're a developer or on an engineering-led team
- Feature intent starts with whoever runs the CLI
- Specs are primarily technical (APIs, refactors, services)
- No formal product strategy or OKR practice exists
- Nobody outside engineering needs to read or approve specs
- You want a free, open-source, agent-agnostic workflow
You need Delvyn when…
- Product managers are accountable for what gets built
- OKRs and discovery decide priorities, not the CLI session
- Specs must carry vision, guardrails, and success criteria
- Multiple stakeholders need alignment before code starts
- You run several coding agents and want one source of intent
- You want a learning loop that makes future specs better
The core difference
Spec Kit formalizes intent inside the coding agent — a developer describes a feature and Spec Kit structures it into a plan, tasks, and code. Delvyn formalizes intent before the IDE — product vision, strategy, discovery, and OKRs become a specification any coding agent executes. Spec Kit makes one developer's intent rigorous. Delvyn makes the whole team's intent rigorous.
How they work together
Delvyn writes the product spec with full strategic context. Spec Kit decomposes and implements it. Nothing is lost between strategy and code.
1. Think
Define vision, validate through discovery, set OKR success criteria in Delvyn
2. Specify
Generate an agent spec with full strategic context from Delvyn
3. Push
Spec lands in GitHub with acceptance criteria attached
4. Spec Kit Executes
specify → plan → tasks → implement turns the spec into working code
Frequently asked questions
What is the difference between Delvyn Studio and GitHub Spec Kit?
GitHub Spec Kit is an open-source CLI toolkit for spec-driven development: developers run /speckit.specify, /speckit.plan, /speckit.tasks, and /speckit.implement inside their coding agent to turn a spec into working code. Delvyn Studio is a product operating model platform that formalizes intent one level higher — vision, strategy, discovery, and OKRs — and turns it into a specification any coding agent (Spec Kit included) can execute. Spec Kit structures how a feature gets built; Delvyn structures what should be built and why.
Is GitHub Spec Kit enough for spec-driven development?
For a developer or engineering-led team, Spec Kit's specify → plan → tasks → implement loop is a genuinely strong spec-driven workflow, and it's free and open source. But Spec Kit's spec starts from what the developer types into the CLI. If product managers own strategy, OKRs drive prioritization, and stakeholders need alignment before code starts, the intent needs to be formalized upstream of the terminal — that is the layer Delvyn Studio provides.
Can I use Delvyn Studio and GitHub Spec Kit together?
Yes — they are complementary. Delvyn Studio generates a product specification grounded in vision, strategy, discovery, and OKRs, and pushes it to GitHub. A developer feeds that context into Spec Kit, whose commands decompose it into a technical plan, tasks, and an implementation. Delvyn supplies the strategic 'what and why'; Spec Kit supplies the engineering 'how'.
When do I need Delvyn Studio instead of just GitHub Spec Kit?
Spec Kit alone is enough when engineering leads prioritization and the feature intent lives in a developer's head. You need Delvyn when product managers are accountable for strategy, when what gets built is decided by OKRs and discovery rather than by whoever runs the CLI, and when specs must be readable and approvable by stakeholders — not only executable by a coding agent.
Formalize intent where it starts — with the product team
Start free and generate your first product specification. Hand your coding agents — Spec Kit included — the strategic context they can't reconstruct on their own.