| What it does | Desktop app that compresses Claude Code and ChatGPT Codex inputs locally to cut token costs by up to 50%
| Desktop app for AI agents working with open source and cloud models
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| Stage | Not given
| Startup
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| Founded | Not given
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| Based in | NL
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| Pricing model | Freemium
| Freemium
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| Pricing | Pro: $4/month billed monthly or $3/month billed annually (for Claude Pro or ChatGPT Plus); Max x5: $20/month billed monthly or $15/month billed annually (for Claude Max x5 or ChatGPT Pro $100); Max x20: $40/month billed monthly or $30/month billed annually (for Claude Max x20 or ChatGPT Pro); Team &
| Free: Local Ollama models with unlimited usage, no account required. Cloud Plus: $20/month including $20/m of usage credits (10% ChatOSS fee), web search, and BYOK unlock. Cloud Max: $100/month including $100/m of usage credits. BYOK Yearly: $39/year to use your own API keys from Ollama Cloud, OpenR
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| Key features | - Local input compression of tool output and boilerplate
- Reversible compression preserving retrieval of original content
- Real-time savings dashboard and activity tracking
- Eight optional add-ons for further optimization
- Support for Claude Code IDE extensions and agent runners
- Privacy-first architecture with all optimization on-device
- Compatibility with Claude Pro, Claude Max, ChatGPT Plus, and ChatGPT Pro
- Minimal latency overhead of approximately 52 milliseconds
- Support for Windows, macOS, and Linux operating systems
- Project learnings saved to agent instruction files
| - Agents work directly inside repositories and write code
- Extensible suite of apps you can build
- Switch between local Ollama and cloud models mid-conversation
- Support for multiple open source models including Qwen, DeepSeek, GLM, Minimax, Gemma, Nemotron
- Run many agents in parallel on models of your choice
- Web search capability on cloud plans
- Built-in apps including PR Reviewer and Migration Bot
- BYOK support for Ollama Cloud, OpenRouter.ai, Anthropic, and OpenAI-compatible providers
- No data retention for local or cloud conversations
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| What makes it different | - Achieves 25-50% token reduction on typical Claude Code sessions without requiring model subscription upgrades
- All compression runs locally on your machine with no data sent to servers
- Reversible compression preserves output quality and allows retrieval of original content on demand
- Works transparently with existing IDE extensions and agent runners without workflow changes
- Built on open-source Headroom CLI engine available free on GitHub
| - Free forever with local Ollama models, no account or credit card required
- Run AI agents directly in your code repositories for real work
- Switch between open source and cloud models without restarting
- Flat 10% fee on cloud plans with all usage going to model providers
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 15 ▲ +1 (up) since last check | 3 ● no change since last check |
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| Trust Flow (Majestic) | 6 | 3 |
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| Citation Flow (Majestic) | 31 | 27 |
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| Referring domains (Majestic) | 135 | 68 |
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Headroom
ChatOSS