ChatGPT by OpenAI

The conversational AI assistant that needs no introduction. Available on web, desktop, iOS, and Android, ChatGPT handles everything from quick questions to deep research, with web browsing, file analysis, image generation, and voice conversations built in.

• Broad familiarity means faster adoption across your organisation
• Advanced Voice Mode for natural, real-time voice conversations
• Built-in web browsing, image generation, and Code Interpreter
• Shared Projects for organising conversations, files, and custom instructions across your team
• Memory across conversations for personalised, context-aware responses

Skills came to ChatGPT from Claude: they turn a proven workflow into a reusable instruction set, when to use it, the steps to follow, and the format of the result, so teams get consistent output without re-writing the same prompt. Skills are shared across a workspace and applied automatically when they're relevant.

• Turn repeatable workflows into shareable instructions ChatGPT applies automatically
• Consistent, correctly-formatted output without re-prompting each time
• Admin role-based controls over who can create, share, and install skills
• Compliance logging of skill activity for governed environments
• Works in ChatGPT for Excel and Google Sheets, grounded in approved files and data

OpenAI's successor to Custom GPTs: Codex-powered, always-on agents that plug directly into Slack, Salesforce, Microsoft 365, Google Drive, and 60+ enterprise apps. Deploy an agent in Slack to handle incoming requests, or schedule it to run work on a cadence, with admin controls across the workspace.

• Plugs directly into Slack, Salesforce, Microsoft 365, Google Drive, and 60+ apps
• Deploy in Slack to answer requests, or schedule agents to run automatically
• Codex-powered, so agents handle reporting, messaging, and multi-step tasks
• Create, share, and manage agents across the workspace with admin controls
• The enterprise evolution of Custom GPTs, built for team workflows

The enterprise deployment of ChatGPT with security, compliance, and admin controls built for large organisations. Enterprise includes unlimited higher-speed access, extended context windows, SSO, SCIM provisioning, and data that is never used for model training.

• Data never used for model training, with configurable retention policies
• SSO (SAML 2.0) and SCIM provisioning for automated user management
• Admin console with usage analytics and adoption dashboards
• SOC 2 Type 2 certified with GDPR compliance and HIPAA BAA available
• Unlimited higher-speed access to the latest models

OpenAI's API for building your own AI-powered applications and agents. The Responses API combines a clean request/response model with powerful built-in tools, including web search, file handling, computer use, and function calling, with server-side state management so you can focus on your application logic.

• Server-side state management for building production applications
• Built-in tools: web search, computer use, code interpreter, file search
• MCP-compatible Apps SDK for building agent interfaces
• Works across the full GPT-5 model lineup including specialised coding models
• Deep research capability for extended multi-step information synthesis

OpenAI's agentic coding platform, available as a desktop app, CLI, IDE extension, and on the web. Codex agents run in isolated cloud sandbox environments, working autonomously on features, bug fixes, and pull requests. Multiple agents can work in parallel across your codebase without conflicts, powered by GPT-5.5.

• Multiple agents working in parallel across projects via isolated worktrees
• Available everywhere: desktop app, CLI, IDE extension, and Codex Cloud on the web
• Cloud sandbox environments for safe, isolated code execution
• Built-in Skills for code understanding, prototyping, and documentation
• Automations for routine work like issue triage, CI/CD, and alert monitoring