ChatGPT Codex
OpenAI's GPT-5.3 cloud development agent — deployed in Geneva by Optinova
ChatGPT Codex (GPT-5.3) is OpenAI's cloud development agent: it executes code tasks in parallel in isolated cloud environments, integrates with GitHub/GitLab, and can work on multiple issues simultaneously without blocking your machine. Optinova deploys Codex and trains your tech teams in Geneva.
An AI developer
that never waits
ChatGPT Codex is not a completion assistant. It's an agent that takes a task, works autonomously in an isolated cloud environment, and submits a complete PR.
While Codex works on 10 issues in parallel, you keep coding on your machine. Your main branch stays clean, your team stays productive.
What Codex does
For development teams in Geneva and French-speaking Switzerland
Isolated cloud execution
Each Codex task runs in an isolated cloud sandbox environment. Your machine stays free, your branches stay clean.
Parallel agents
Submit 10 issues simultaneously. Codex works on each in parallel, generates PRs, and notifies you when ready to review.
GitHub & GitLab integration
Codex reads your codebase, understands your conventions, creates branches, commits, and PRs directly in your existing Git workflow.
SOTA on SWE-Bench Pro
GPT-5.3 achieves 72.2% on SWE-Bench Verified and 43.8% on SWE-Bench Pro — the reference benchmarks for development agents.
Codebase memory
Codex indexes your entire repository: it understands architecture, patterns, dependencies, and conventions before touching code.
Governance & audit trail
Every action is traced, every PR documented. Full human control over what gets merged — ideal for teams with compliance requirements.
Measured performance
GPT-5.3 score on the reference benchmark for development agents.
Handle 10 issues simultaneously without blocking your machine or team.
SOTA on the hardest benchmark for autonomous code agents.
Each agent works in an isolated worktree — zero conflicts with your in-progress code.
Advanced features
The most advanced cloud development agent on the market — deployed for your tech teams in Geneva
Isolated worktrees
Each Codex agent works in an isolated Git worktree. No conflicts, no pollution of your main branch.
Long tasks without blocking
Database migrations, massive refactors, and complex feature additions run in the background while you keep coding.
Assisted code review
Codex generates PRs with detailed descriptions, unit tests, and documentation. Your reviewers save time on every PR.
Proactive bug detection
Scan your codebase for bugs, vulnerabilities, and technical debt. Codex generates fixes with regression tests.
Test generation
Automatically increase your test coverage. Codex analyzes existing code and generates unit, integration, and E2E tests.
Automatic documentation
Generate or update technical documentation, READMEs, changelogs, and code comments automatically.
Codex for
Geneva tech teams
Geneva concentrates tech teams in fintech, international organizations, medtech, and SaaS startups. These teams have specific compliance and security requirements.
Optinova configures Codex with governance policies adapted to your sector, trains your developers, and ensures every PR meets your quality and security standards.
Our deployment method
Technical audit
Stack analysis (languages, frameworks, CI/CD), Git maturity assessment, priority workflow identification (bugs, features, tests, docs), and governance rule definition.
Configuration & integrations
GitHub/GitLab integration setup, sandbox environment configuration, review and approval policy definition, agent monitoring setup.
Training & pilot
Developer training on Codex usage, pilot deployment on real issues, workflow and governance rule adjustment based on feedback.
Full deployment
Extension to all teams, performance metric setup, monthly reviews, and adaptation to new Codex features.