model · Anthropic
Fractional CTO with Claude
Fractional CTO built on Claude, chosen where it genuinely fits, and swapped where it does not.
- Category
- model
- Vendor
- Anthropic
- Alternatives we also use
- 5
Why Claude for this
The first job is usually hiring. Getting your first two engineers right matters more than any architecture decision, because they will make most of the subsequent ones.
Claude is strongest at sustained reasoning over long documents, careful tool use, and a low rate of confident errors. For fractional cto that matters because the failure modes of this kind of system tend to cluster exactly there.
The honest trade-off: for very high-volume classification or extraction, a smaller model is cheaper at indistinguishable quality. We say that up front because a stack chosen for fashion rather than fit becomes someone's migration project two years later. We start from the constraint, not the capability, what the system must never do, who signs off, and what happens when it is wrong.
We hand over with runbooks, tests and a team that knows how it works, not a dependency.
The honest assessment
- What it is
- Anthropic's model family, our default for long-context reasoning, code and agentic tool use.
- Strongest at
- sustained reasoning over long documents, careful tool use, and a low rate of confident errors
- Trade-off
- for very high-volume classification or extraction, a smaller model is cheaper at indistinguishable quality
- Category
- model
We are not a reseller for Anthropic and hold no commission on this choice. Where a different option fits your workload better, the recommendation will say so. That is the entire value of asking us.
What is included
- Architecture and technical debt assessment with a prioritised plan
- Engineering hiring, role definition, screening and interview design
- Vendor and platform selection with explicit criteria
- Delivery process and quality standards your team can sustain
- Board and investor technical reporting in plain language
- A handover plan for when you hire full-time
Questions
How much time do we get?
Typically one to three days a month, scaled to what is happening. Fundraising, a migration or a hiring push warrant more; steady state needs less.
Will you help us hire a permanent CTO?
Yes, and we consider it part of the job. Defining the role, screening and handing over cleanly is the intended end state.
Can you do technical due diligence?
Yes. Both sides. Assessing a target before acquisition, or preparing your own codebase for an investor's review.
Alternatives for fractional cto
Same capability, different stack. Each page states its own trade-off.
Building with Claude?
Bring us the workload and we will tell you whether this is the right stack for it.
Or email bd@dtrasglobal.com · call +91 74118 77878