Description
OpenGamma is a specialized tool designed to generate private AI presentations from confidential data, ensuring that sensitive information remains secure and never exposed to AI models. It allows users to leverage the power of AI apps like Claude and ChatGPT to create professional, on-brand PowerPoint decks from internal documents without compromising data privacy.
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The core functionality revolves around a placeholder system. When a confidential document is uploaded to OpenGamma, it is encrypted in the user's browser, and sensitive details such as names, amounts, and dates are replaced with generic placeholders (e.g., [CLIENT_1], [MONEY_1]). The AI then processes this anonymized version of the document to design the presentation. Once the AI generates the deck, the user's browser fills in the real values, producing a native, editable .pptx file with accurate data.
OpenGamma offers two primary modes for handling data: Masked mode and Blind mode. Masked mode replaces sensitive details with reversible placeholders, allowing the AI to understand the text's meaning while hiding specific values. Blind mode, designed for highly sensitive material, provides the AI with only the document's structure, such as section lengths, table shapes, and trends, without any actual wording. This ensures maximum privacy, as the AI cannot infer context from the text.
The platform emphasizes robust security measures. Documents are encrypted with AES-256-GCM in the user's browser before upload, and only ciphertext is stored on OpenGamma's servers. The encryption key is held solely by the user, wrapped with a passphrase and a recovery key that OpenGamma never accesses. Automated leak tests are conducted on every release to verify data security, and the service explicitly states it uses no ads or third-party trackers. OpenGamma is ideal for creating board and investor updates, client pitches, finance reviews, and HR reports where data confidentiality is paramount.
- CategoryAI Presentation Makers
- Pricing ModelFreemium
- DeploymentCloud
- PlatformsWeb
OpenGamma's Core Features
Private AI presentation generation
Placeholder-based data masking for AI
Compatibility with Claude, ChatGPT, and MCP-capable AI apps
On-brand PowerPoint deck creation
Browser-side encryption (AES-256-GCM)
User-controlled encryption keys
Masked mode for text-based pseudonymization
Blind mode for structure-only AI processing
Editable .pptx output with native charts and animations
Template import for brand consistency (colors, fonts, logos)
Tone of voice application
Automated layout and design checks
Support for various document types (text, tables, private photos)
Local mode for processing files without vault storage
Automated security leak tests
How to use OpenGamma?
Add Document: Encrypt your confidential document in your browser, which replaces sensitive details with placeholders.
Approve AI View: Review the placeholder version of your document to ensure it's what the AI will see.
Request Deck: Ask Claude, ChatGPT, or any MCP app to build your presentation from the approved placeholder version.
Download Real Deck: Your browser fills in the original values, and you download an editable, on-brand PowerPoint with real data.
OpenGamma's Use Cases
- Board and Investor Updates
- Client Pitches and QBRs
- Finance and FP&A Reviews
- People and HR Reviews
- Confidential Document Summaries
