Thinking in Code

# Analyze a 7 MB file. *Pay for 407 bytes.*

Your agent writes a short script. Context Mode runs it, and only what it prints reaches the model.

[Get started free](https://console.context-mode.com/login) [Read the docs](https://contextmode.ai/docs/how-saving-works#code-mode)

Try it

Direct Context Mode

Question: how many versions of react are on npm?

The file **7,011,585 B** The model sees **100,000 chars**

Sent to the model

- The first 1.4% of the file

Never read

- The other 98.6%

[Long-Context Data Analysis · Claude Haiku 4.5 **$0.175 → $0.062** *64% lower* 12 of 12 runs](https://contextmode.ai/docs/benchmarks)

Question: how many versions of react are on npm?

The script reads **7,011,585 B** The model reads **407 B**

Sent to the model

- The answer: 2,959 versions, the latest stable one, and their dates

Never sent

- The 7 MB file itself

[Long-Context Data Analysis · Claude Haiku 4.5 **$0.175 → $0.062** *64% lower* 12 of 12 runs](https://contextmode.ai/docs/benchmarks)

How it works

## The script reads. *The model reads the answer.*

1. 01 **The agent writes a script** For example, count versions in a registry document.
2. 02 **Context Mode runs it** Public data in a sandbox, local files on your machine.
3. 03 **Only the result comes back** The script read 7,011,585 bytes. The model read 407.

Proof

## Data analysis, run twice. *Cost per task.*

Claude Haiku 4.5

Direct **100%** Context Mode **36%**

64% lower

Claude Opus 5.5

Direct **$0.223** Context Mode **$0.201**

10% lower

Paired runs, 2026-09-29. Correct answers were equal in both arms. [Method and sources →](https://contextmode.ai/docs/benchmarks#data-analysis)

Features

## Two places to run.

**Public data**

Web pages and APIs, read in a sandbox that reaches only the sites you allow.

**Your files**

Files on your machine, read by your agent with its own permissions.

**Checked by Protect**

Every host a script calls meets your rules.

Use cases: [Analyze large files](https://contextmode.ai/use-cases/analyze-large-files)

## Keep raw data *out of the prompt.*

*npx @context-mode/cli* connects your agents. 1,000 requests free, no card.

[Get started free →](https://console.context-mode.com/login) [Read the docs →](https://contextmode.ai/docs/how-saving-works#code-mode)