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Cline v3.28: Free Grok Extended + GPT-5 Optimized
Written by
Nick Baumann
Published on
September 12, 2025

Cline v3.28: Free Grok Extended + GPT-5 Optimized

TLDR

Today was supposed to be the day free access to grok-code-fast-1 ended. xAI extended it. We don't know for how long :)

Meanwhile, we've been fine-tuning how Cline works with GPT-5, notably, we've optimized the prompt specifically for how GPT-5 handles multi-step coding tasks which require accurate tool-calling.

Grok stays free

xAI built grok-code-fast-1 from scratch for agentic coding. It's been performing well in Cline, particularly on diff edits where we're seeing consistent improvements since its initial release from the xAI team.

The speed changes how you work. Instead of crafting perfect prompts, you give it quick tasks and iterate. The model understands commands like grep, terminal operations, and file editing without explanation.

To use Grok in Cline:

  1. Select the Cline provider in your model settings.
  2. Choose grok-code-fast-1 from the available models.
  3. Start coding at zero cost.

GPT-5 optimization

We've improved the GPT-5 prompt in Cline. The model now handles multi-step coding tasks better, maintains context across longer sessions, and follows instructions more reliably.

We're really bullish on this model, and it's priced at $1.25/$10 per 1M tokens (well-below $3/$15 for Sonnet-4).

Other updates

  • ESC key now cancels operations consistently throughout the interface
  • API provider dropdown actually searches now
  • /deep-planning handles Windows/PowerShell environments properly
  • Real-time task history sync across all Cline instances
  • Ollama custom prompt support
  • Dify.ai integration
  • DeepSeek-V3.1 on SambaNova

Happy coding!

-Nick


Update to Cline v3.28 now to get extended free Grok access and optimized GPT-5 performance. Join the discussion on Reddit or Discord to share your experience with these improvements.

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