51.1%fewer tokens per correct answer.SWE-rebench · 20 paired tasks

Questions we get asked.

• What is Halv?

  Halv is a desktop workspace for AI coding agents. Run Claude Code, Codex, Kimi, and GLM in one app with chat, native terminals, project history, and a live savings meter. Halv combines code navigation, command output filtering, and context compression to reduce wasted tokens while you work.

  • See the workspace
• How can I increase my Claude Code usage limit?

  To make your current allowance last longer, reduce unnecessary context and tool output. Halv combines local context compression, code indexing, and command output filtering in one workspace. Anthropic still controls your account's limits.

  • Read the guide
  • Official Claude Code guidance
• What is the best way to save tokens in Claude Code?

  Start by reducing unnecessary context: keep instructions focused, give Claude relevant files, and use /clear when starting unrelated work. Halv adds code indexing, command output filtering, and local context compression around Claude Code in a desktop workspace. Use its savings meter to measure the difference in your own work. Savings depend on the task and context.

  • Read the guide
  • Official Claude Code guidance
• How can I increase my Codex usage limit?

  To make your current Codex allowance last longer, keep requests focused and reduce unnecessary context. Halv helps reduce token waste with code indexing, command output filtering, and context compression. OpenAI controls the actual limits.

  • Read the guide
  • Official Codex guidance
• What is the best way to save tokens in Codex?

  Give Codex precise tasks, relevant files, and concise AGENTS.md instructions. Disable MCP servers you do not need. Halv combines code indexing, command output filtering, and context compression to reduce wasted tokens. In Halv's first 20 paired SWE-rebench tasks, Codex with Halv used 30.2% fewer total tokens and 51.1% fewer tokens per correct answer. This small, self-run benchmark does not guarantee the same savings on every task.

  • Read the guide
  • Read the benchmark
  • Official Codex guidance
• Does Halv work with Codex and Claude Code?

  Yes. Halv supports Claude Code, Codex, Kimi, and GLM. In Pro mode, each agent runs through its native CLI inside Halv. Sign in with your existing agent account and use the subscriptions you already pay for. API keys are optional for providers that support them.

• How does Halv reduce coding agent token usage?

  Halv reduces token usage in three ways. Crux gives agents a code index for navigation and references. RTK filters noisy command output before it enters model context. Halv Engine Headroom compresses model context locally. Together, these tools reduce repeated code exploration and unnecessary context.

  • HOW IT WORKS
• What evidence supports Halv's token savings?

  In Halv's first 20 paired SWE-rebench tasks, Codex with Halv used 51.1% fewer tokens per correct answer and 30.2% fewer total tokens. Repository verifiers accepted 10 of 20 Halv answers versus 7 of 20 Codex answers. Both arms used the same model, tasks, and verifier. Halv published this small, self-run benchmark and all 40 selected run records.

  • Read the benchmark
  • Explore all 20 task pairs
• Will every task use 51.1% fewer tokens with Halv?

  Savings vary by task, model, and context. The 51.1% result measures total tokens divided by verifier-passing tasks, including tokens from unsuccessful attempts. Halv used fewer tokens on 12 benchmark tasks and more on 8. This Codex benchmark does not establish the same savings for Claude Code or guarantee identical answers.

• How do Halv's token savings affect my subscription?

  Halv helps you get more work from your existing agent usage budget. Your provider's fixed subscription price stays the same. Lower token usage can reduce metered API costs, depending on pricing and caching. Compare your measured savings with Halv's price to see whether it pays for your workflow.

  • PRICING
• How is Halv different from a terminal or an MCP server?

  Halv combines coding agents, chat, native terminals, project history, approvals, and savings tracking in one desktop app. Crux is the code-index MCP server within Halv's toolkit. With a standalone CLI, you manage that workspace and those tools yourself. Halv brings them together around the agents you already use.

• How much does Halv cost, and can I try it free?

  Basic costs US$2 per month with a monthly savings cap. Unlimited costs US$10 per month with no savings cap. Both plans include all features and a 7-day free trial. A card is required at signup. Cancel during the trial to pay nothing; otherwise, your subscription renews automatically.

  • Download Halv
• Does Halv process my code locally?

  Halv runs code indexing and context compression on your computer. Your chosen model provider receives the prompts and context needed to answer your requests. Halv also connects to services for account access, billing, updates, and basic app events. Review agent actions and approvals before commands run or files change.

  • Privacy
• Does Halv run on macOS, Windows, and Linux?

  Yes. Halv supports macOS on Apple silicon and Intel, Windows x64, and Linux x64. Linux downloads include AppImage and deb packages. Halv is a desktop app; download and install it on a supported computer to use the workspace.

  • All platforms