What The Diff vs GitHub Copilot (2026) — Which Is Better?

Comparing What The Diff and GitHub Copilot side by side to help you choose the right AI tool for your needs. What The Diff: Use AI to explain pull-request changes in GitHub and GitLab. GitHub Copilot: GitHub Copilot is an AI pair-programmer with agent mode and a Claude/GPT/Gemini model picker — free tier, Pro $10/mo, Pro+ $39/mo, Max $100/mo, plus per-seat org plans.

What The Diff

Use AI to explain pull-request changes in GitHub and GitLab.

Visit the What The Diff website for the latest pricing details. Check the official website for current plans, trial availability, and usage limits.

What The Diff Key Features

  • Pull-request summaries
  • GitHub and GitLab integration

Best What The Diff Use Cases

  • Understand a code change before review
  • Prepare a readable change summary

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GitHub Copilot

GitHub Copilot is an AI pair-programmer with agent mode and a Claude/GPT/Gemini model picker — free tier, Pro $10/mo, Pro+ $39/mo, Max $100/mo, plus per-seat org plans.

GitHub Copilot offers a free plan with paid tiers for advanced features. Free: $0 — 2,000 code completions/month, limited premium-model access, and Copilot CLI; no card required. Pro: $10/month — unlimited code completions plus ~$15/month of AI credits, cloud coding agent, code review, and model selection. Pro+: $39/month — ~$70/month of AI credits (~4x Pro), premium models including Claude Opus, and audit logs. Max: $100/month — ~$200/month of AI credits, priority model access, and high-volume agent workflows. Business: $19/user/month — pooled AI credits per user, the cloud agent, a broad model catalog, and centralized management. Enterprise: $39/user/month — larger pooled credits, GitHub.com integration, codebase indexing, and custom models. Overage beyond included credits is billed at $0.01 per credit.

GitHub Copilot Key Features

  • Usage-based "AI credits" billing (since June 1, 2026) — completions stay unlimited on paid plans
  • Agent mode and a cloud coding agent that completes multi-step tasks autonomously
  • Multi-model picker spanning Anthropic Claude, OpenAI GPT, and Google Gemini families
  • Unlimited code completions and next-edit suggestions on all paid tiers
  • Copilot code review for automated PR feedback

Best GitHub Copilot Use Cases

  • Autocompleting boilerplate and repetitive code
  • Learning new programming languages and frameworks
  • Explaining and documenting existing code
  • Writing unit tests automatically

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Pricing Comparison: What The Diff vs GitHub Copilot

What The Diff: Visit the What The Diff website for the latest pricing details. Check the official website for current plans, trial availability, and usage limits.

GitHub Copilot: GitHub Copilot offers a free plan with paid tiers for advanced features. Free: $0 — 2,000 code completions/month, limited premium-model access, and Copilot CLI; no card required. Pro: $10/month — unlimited code completions plus ~$15/month of AI credits, cloud coding agent, code review, and model selection. Pro+: $39/month — ~$70/month of AI credits (~4x Pro), premium models including Claude Opus, and audit logs. Max: $100/month — ~$200/month of AI credits, priority model access, and high-volume agent workflows. Business: $19/user/month — pooled AI credits per user, the cloud agent, a broad model catalog, and centralized management. Enterprise: $39/user/month — larger pooled credits, GitHub.com integration, codebase indexing, and custom models. Overage beyond included credits is billed at $0.01 per credit.

Frequently Asked Questions

Which is better: What The Diff or GitHub Copilot?

The best choice between What The Diff and GitHub Copilot depends on your use case. What The Diff — Use AI to explain pull-request changes in GitHub and GitLab.. GitHub Copilot — GitHub Copilot is an AI pair-programmer with agent mode and a Claude/GPT/Gemini model picker — free tier, Pro $10/mo, Pro+ $39/mo, Max $100/mo, plus per-seat org plans.. Compare pricing and features above to find the best fit for your workflow.

Is What The Diff free?

Visit the What The Diff website for the latest pricing details. Check the official website for current plans, trial availability, and usage limits.

Is GitHub Copilot free?

GitHub Copilot offers a free plan with paid tiers for advanced features. Free: $0 — 2,000 code completions/month, limited premium-model access, and Copilot CLI; no card required. Pro: $10/month — unlimited code completions plus ~$15/month of AI credits, cloud coding agent, code review, and model selection. Pro+: $39/month — ~$70/month of AI credits (~4x Pro), premium models including Claude Opus, and audit logs. Max: $100/month — ~$200/month of AI credits, priority model access, and high-volume agent workflows. Business: $19/user/month — pooled AI credits per user, the cloud agent, a broad model catalog, and centralized management. Enterprise: $39/user/month — larger pooled credits, GitHub.com integration, codebase indexing, and custom models. Overage beyond included credits is billed at $0.01 per credit.

What are the best alternatives to What The Diff and GitHub Copilot?

Explore What The Diff alternatives and GitHub Copilot alternatives on Nextool.ai for more options.

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