Grok 4.5 is now available in ThinkReview

July 17, 2026
Thinkode AI
3 min read
GrokGrok 4.5SpaceXAIAI Code ReviewPull RequestsModel SelectionThinkReview

Grok 4.5 is now available in ThinkReview

We're excited to announce that Grok 4.5 is now available in ThinkReview. SpaceXAI's Grok 4.5 is positioned as their strongest model yet for coding, agentic tasks, and knowledge work — trained with a heavy emphasis on real developer workflows. You can use it today for AI-powered code reviews on GitHub, GitLab, Azure DevOps, and Bitbucket.

What is Grok 4.5?

Grok 4.5 is SpaceXAI's latest coding-forward frontier model. The launch messaging focuses less on chat and more on finishing hard, multi-step technical work — including software engineering agents — at aggressive price and token efficiency.

Highlights from the launch:

  • Built for coding and agents — Tuned for sustained engineering tasks, not just conversational Q&A.
  • High intelligence per dollar — Competitive API pricing ($2 / $6 per million input/output tokens) with claims of roughly 2× token efficiency vs. comparable leading models.
  • Faster task completion — Positioned to solve work in fewer steps, which matters when a review harness fetches context and iterates on findings.
  • Developer-tool DNA — Trained alongside Cursor / Grok Build workflows, so the model is comfortable in code-centric loops.
  • Lite-tier access in ThinkReview — Strong capability without requiring a Professional subscription for every review.

In ThinkReview, you'll find Grok 4.5 in Model selection on the Lite tier.

Why use Grok 4.5 for pull request review

Code review rewards models that stay on plan, read diffs carefully, and don't burn tokens on performative verbosity.

  • Cost-efficient depth — Useful when you want frontier-adjacent findings across many MRs without Opus/Sol spend on every change.
  • Agentic coding habits — Strong fit for tool-using review flows and multi-step analysis of messy brownfield PRs.
  • Practical Lite upgrade — A clear step up from Free-tier models for teams that review daily.
  • Same ThinkReview surface — Select Grok 4.5 once; run it on every supported host your team ships to.

As always, treat severity labels as input — your team's bar for "critical" still wins — and pair Grok with repository-level context when the real bug lives outside the hunk.

How to use Grok 4.5 in ThinkReview

  1. Open ThinkReview settings — Click the extension icon and go to Settings or Model selection.
  2. Choose Grok 4.5 — Select it from the model dropdown for your reviews.
  3. Run a review — Open any pull request or merge request and start ThinkReview with your chosen model.

Grok 4.5 is available on Lite (and plans that include Lite models). Manage your catalog in Model Selection on the ThinkReview portal.

Where it works

Same as always: GitHub, GitLab, Azure DevOps, and Bitbucket Cloud. One extension, one workflow — now with Grok 4.5 for high intelligence-per-dollar AI reviews.

If you try Grok 4.5 on real PRs and have feedback, we'd love to hear it — open an issue on GitHub or reach out via thinkreview.dev.

Ready to try Grok 4.5 on your next PR? Install ThinkReview or manage your models in the portal.

Model details reference SpaceXAI's Grok 4.5 announcement.