Building an autonomous financial analyst with o1 and o3-mini

Endex⁠(opens in a new window), an AI platform for financial firms, is developing an AI Analyst that retrieves, synthesizes, and reasons through complex financial data. They work closely with OpenAI to reinvent the workflow of investment professionals.

"Finance professionals don’t just need search results; they need structured thinking and deep analysis," says Tarun Amasa, CEO at Endex. "We envision a future where every firm has access to teams of digital analysts, seamlessly augmenting time-intensive workflows.”

By evaluating and integrating a range of OpenAI’s models, including GPT‑4o, o1‑mini, o1‑preview, and o3‑mini, Endex connects firms' internal data, public disclosures, and trusted financial sources to enhance research and augment key workflows.

Bringing analyst-level precision to AI-powered finance

Precision is paramount in finance, but many AI-powered tools can miss critical details that impact decision-making. For instance, a missed adjustment in EBITDA reconciliation or an overlooked “change in control provision” clause can alter the financial outlook of an investment.

Endex takes a different approach. Instead of relying on retrieval-augmented generation (RAG), its agents use OpenAI’s reasoning models to retrieve and reflect data like a financial analyst, pulling facts, identifying inconsistencies, and contextualizing metrics.

Endex’s agents autonomously process financial reports, market data, and firm-specific knowledge to complete tasks including:

• Precedent transaction overviews

• Earnings performance summaries

• Investment committee (IC) memo preparation

• Data room due diligence

"OpenAI’s o-series long-context windows, prompt adherence, and reasoning capabilities make a significant difference," says Amasa. "Instead of just finding a needle in a haystack, the models can analyze and detect discrepancies in financial data the way a seasoned analyst would."

Tarun Amasa, CEO at Endex

Achieving higher accuracy and automation for financial firms

Tarun Amasa, CEO at Endex