---
id: agent-tool-calls/2026-09
series: agent-tool-calls
title: Tools models call, September 2026
period: 2026-09
period_start: 2026-09-01
period_end: 2026-09-30
updated: 2026-11-11
license: CC BY 4.0
canonical: https://www.requesty.ai/data/agent-tool-calls/2026-09
latest: https://www.requesty.ai/data/agent-tool-calls
---

# Tools models call, September 2026

> 4.3% of chat requests in September 2026 returned at least one tool call. The most widely called tool name was "read", seen at 37.4% of organizations using tools.

Question: Which tools do LLMs call most often in production?

## Key findings

1. Top tool names by reach: "read" (37.4%), "bash" (34.5%), "edit" (29.7%), "write" (28.5%), "read_file" (22.9%).
2. "bash" appears in the most tool-call requests, 21.1% of them.
3. bash moved the most since August 2026: reach went from 38.6% to 34.5% (-4.1 pp).

## Data

| Tool name | Share of tool-using organizations | Share of tool-call requests | Organizations (band) |
| --- | --- | --- | --- |
| read | 37.44% | 9.91% | 100-499 |
| bash | 34.51% | 21.09% | 100-499 |
| edit | 29.66% | 3.70% | 100-499 |
| write | 28.49% | 1.58% | 100-499 |
| read_file | 22.91% | 1.24% | 100-499 |
| grep | 21.59% | 2.96% | 100-499 |
| web_search | 21.44% | 2.88% | 100-499 |
| glob | 21.00% | 0.80% | 100-499 |
| skill | 16.15% | 0.36% | 100-499 |
| write_file | 13.95% | 0.33% | 25-99 |
| todowrite | 13.51% | 0.47% | 25-99 |
| search_files | 13.36% | 0.21% | 25-99 |
| terminal | 12.92% | 2.42% | 25-99 |
| webfetch | 12.04% | 0.11% | 25-99 |
| execute_code | 11.45% | 0.62% | 25-99 |
| skill_view | 11.16% | 0.24% | 25-99 |
| memory | 9.99% | 0.07% | 25-99 |
| skill_manage | 9.69% | 0.18% | 25-99 |
| patch | 9.54% | 0.24% | 25-99 |
| task | 8.66% | 0.27% | 25-99 |
| web_extract | 7.93% | 0.07% | 25-99 |
| skills_list | 7.78% | 0.03% | 25-99 |
| question | 7.78% | 0.05% | 25-99 |
| websearch | 7.64% | 0.07% | 25-99 |
| agent | 7.64% | 0.09% | 25-99 |
| apply_patch | 6.46% | 0.85% | 25-99 |
| askuserquestion | 6.02% | 0.05% | 25-99 |
| ask_user | 6.02% | 0.10% | 25-99 |
| process | 5.73% | 0.08% | 25-99 |
| list_files | 5.73% | 0.04% | 25-99 |
| search_web | 5.43% | 0.07% | 25-99 |
| clarify | 5.43% | 0.02% | 25-99 |
| exec | 5.29% | 0.44% | 25-99 |
| delegate_task | 5.29% | 0.02% | 25-99 |
| browser_exec | 5.14% | 0.03% | 25-99 |
| shell | 5.14% | 0.29% | 25-99 |
| tool_call | 5.14% | 0.13% | 25-99 |
| read_files | 5.14% | 0.19% | 25-99 |
| web_fetch | 5.14% | 0.05% | 25-99 |

## Method

- Tool names come from the tool calls in model responses, lowercased. A tool counts once per request even if it is called several times.
- A tool name needs 10 or more organizations before it is listed, on top of the standard floors, so names specific to one company never appear.
- Tool-call data is recorded from July 2026, so this series starts then.
- A row is published only when it has at least 20 requests, at least 5 distinct organizations, and no single organization above 80% of its traffic. These are the same floors /rankings uses. Rows below the floors are withheld, not estimated.
- Only shares, rates, medians and organization bands are published. Absolute request, token and spend totals stay private.

## Caveats

- Different agents name the same tool differently (read vs read_file, bash vs shell vs terminal). Names are not merged.
- Only tool calls the model returned are counted, not tools that were offered but unused.

## Cite as

Requesty (2026). Tools models call, September 2026. Requesty Data. https://www.requesty.ai/data/agent-tool-calls/2026-09

```bibtex
@misc{requesty_agent_tool_calls_2026_09,
  author       = {{Requesty}},
  title        = {Tools models call, September 2026},
  year         = {2026},
  howpublished = {\url{https://www.requesty.ai/data/agent-tool-calls/2026-09}},
  note         = {Requesty Data}
}
```

Source: Requesty production gateway. License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).
Downloads: [JSON](https://www.requesty.ai/data/agent-tool-calls/2026-09/data.json) · [CSV](https://www.requesty.ai/data/agent-tool-calls/2026-09/data.csv) · [Markdown](https://www.requesty.ai/data/agent-tool-calls/2026-09/data.md)