OpenAI backs a shared robots.txt signal for AI training
OpenAI announced on October 30 that it plans to honor a shared robots.txt preference for foundational generative AI training. The proposal could reduce the number of provider-specific rules publishers maintain, while leaving their existing crawler controls in place.
Spec sheet
- Announcement
- 30 October 2026
- Proposed token
- __usage_ai-training
- Document
- Individual Internet-Draft 00
- OpenAI rollout
- Planned in the coming months
- Current controls
- Existing robots.txt crawler rules continue
One purpose, several providers
OpenAI describes a voluntary effort to express the same training preference to multiple participating providers. Its announcement commits to implementing support in the coming months and publishing details when that happens. For a web team, the immediate task is therefore planning a configuration change. Removing existing bot rules now would discard controls that OpenAI says it will continue to respect. A shared entry should eventually simplify maintenance, especially for publishers that manage many domains with the same content policy.
The proposal separates use from retrieval
The linked draft puts a purpose-specific token into familiar robots.txt groups. It uses path-based Allow and Disallow rules to express preferences about training use. The policy group does not itself tell a crawler to stop fetching a page. That distinction lets an operator express a content-use preference separately from its access rules. It also creates a testing requirement: parsing a file successfully does not demonstrate that a downstream training process applies the preference. Operators need to decide which evidence they will accept for each part of that chain.
Existing controls already split the jobs
OpenAI documents GPTBot for training and OAI-SearchBot for search. A publisher can restrict the former while permitting the latter. Anthropic makes a similar split with ClaudeBot and Claude-SearchBot, and also documents Claude-User for user-requested retrieval. Anthropic says disabling its user-directed crawler prevents that retrieval and can reduce visibility in those requests. These controls give site owners separate choices, at the price of maintaining several provider names. For a publisher that wants discovery without training collection, an undifferentiated block on every AI crawler would express the wrong policy.
An access boundary still needs enforcement
RFC 9309 treats robots.txt as a crawler convention and explicitly distinguishes it from protective measures such as authentication. A training preference therefore belongs in a different operational category from a password, account entitlement or paywall. The practical consequence is simple: private material should stay behind enforced access controls. A team reviewing this proposal should inventory public pages separately from customer records and paid content. That avoids asking a public preference file to carry a security responsibility it was never designed to perform.
Test the policy that readers actually want
Our suggested rollout starts with a small matrix: training, search indexing and user-requested retrieval, each with an explicit owner and decision. Keep the deployed robots.txt version with the change record, then test representative paths before changing every domain. Include public articles, subscription pages and any paths with exceptions. Request logs can help check retrieval behavior, while a separate review must address providers' documented training-use commitments. Treat these as two tests with different evidence. Combining them into one green status would hide the most important distinction in the proposal. Give exceptions an expiry date and a named reviewer. Otherwise a temporary rule for one integration can survive long after that integration disappears. Include a rollback copy of the previous file. If a deployment changes search discovery unexpectedly, the operator should be able to restore the earlier configuration without reconstructing it.
| Control | OpenAI crawler rules | Anthropic crawler rules | Shared proposal |
|---|---|---|---|
| Training | GPTBot | ClaudeBot | __usage_ai-training |
| Search | OAI-SearchBot | Claude-SearchBot | Separate access rules remain |
| Scope | Provider-specific bots | Provider-specific bots | Training purpose across participants |
| Status | Documented controls | Documented controls | Draft; OpenAI implementation planned |
Claim check
- Confirmed OpenAI has announced planned support and says existing crawler controls will remain in place. [1]
- Confirmed Draft 00 is an individual Internet-Draft, not an IETF-endorsed or adopted standard; its syntax can change. [2]
- Unclear The announcement gives no activation date, cross-provider compliance evidence or promise to remove previously collected training data. [1]
Our read Opinion
We favor the shared signal because duplicated provider rules are an avoidable maintenance burden. Publishers should adopt it as an additional policy layer when implementation details arrive, keeping their access controls separate. The success measure is fewer exceptions to maintain without sacrificing search visibility or the intended training preference. We would change our view if providers interpret the same file differently enough that the shared group adds another rulebook instead of replacing duplicated work.
What we're watching
- By 30 November 2026, check OpenAI's implementation notes for an activation date and conflict-handling rules.
- By 30 November 2026, check the draft history and participating providers' documentation for matching interpretations.
Sources
- Making it easier for websites to express AI training preferences, October 30, 2026 · OpenAI · 30 Oct
- Machine-Readable Training Preference Signal, individual Internet-Draft 00, October 30, 2026 · IETF Datatracker / Kevin Kelley · 30 Oct
- Overview of OpenAI Crawlers · OpenAI · 31 Oct
- Anthropic crawler controls, April 7, 2026 · Anthropic · 7 Apr
- RFC 9309: Robots Exclusion Protocol, published September 2022 · RFC Editor / IETF · 31 Oct