How to return a huge grammar corrected text?

API
,
1

Hello, everyone. I will be very appreciated if you help me to solve the problem.

It is about 8000 tokens. I ask in GPT like:

 {
        role: 'system',
        content: "ask for check grammar and return the whole corrected text"
      },
      {
        role: 'user',
        content: "text from link about 8000 tokens",
      },

I am using GPT gpt-4.1-2025-04-14, so it should return about 32000 tokens but the best result I have got was about ~7000
So almost all text corrected, but I need all text back

Help me. I know that I can use chunking but Is there will be saved context?

Additional information:
Javascript library:
const OpenAI = require(‘openai’);

Node v18.20.7

request looks like:

      const { data, response: rawResponse } = await this.client.chat.completions
        .create(
          {
            messages: this.createCheckGrammarMessages(text, dialect),
            model,
            temperature: this.temperature,
          },
          {
            maxRetries: requestsRetryCount,
          },
        )
        .withResponse();