Selecting "o1" model on automator produces error: "Unsupported parameter: 'max_tokens' is not supported"

Can you confirm which provider you are using?

Ah I see my typo. I'm using OpenAI 4o, when switching to OpenAI o1, the error is thrown.

I'm on Drupal 10.4.2 and AI module 1.04.

@marcus Would I be right in thinking this needs to be resolved in https://git.drupalcode.org/project/ai_provider_openai/-/blob/1.0.x/src/P... rather than this module?

Yup @mrdalesmit - moving it.

Thanks very much, works on my end :)

I think in this case the method getModelSettings would do the job, instead of having to invoke an event.

By using unset and setting a new value it should be possible: https://git.drupalcode.org/project/ai_provider_openai/-/blob/1.1.x/src/P...

If that is not true, just set back to RTBC.

Same issue exists with gpt-5 models, so I think the patch won't work:
if (str_starts_with($model_id, 'o1')) {
Needs to be updated to work with any model which might use max_completion_token instead of max_tokens.

Convert max_tokens to max_completion_tokens for newer OpenAI models to prevent API errors

     // Only process OpenAI provider requests
      if ($event->getProviderId() !== 'openai') {
        return;
      }

      $model_id = $event->getModelId();
      $configuration = $event->getConfiguration();

      // Handle o1 models which require max_completion_tokens instead of max_tokens
      if (preg_match('/^o1/i', $model_id) && isset($configuration['max_tokens'])) {
        $configuration['max_completion_tokens'] = $configuration['max_tokens'];
        unset($configuration['max_tokens']);
        $event->setConfiguration($configuration);
      }

      // Handle gpt-5 models which also may require max_completion_tokens
      if (preg_match('/^gpt-5/i', $model_id) && isset($configuration['max_tokens'])) {
        $configuration['max_completion_tokens'] = $configuration['max_tokens'];
        unset($configuration['max_tokens']);
        $event->setConfiguration($configuration);
      }

Oldie, but getting merged now. Also fixed gpt-5. Backporting to 1.1.x.

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