fix(platform): retire deprecated xAI Grok models, add grok-4.3

[Torantulino]

Summary

Removes xAI Grok models being retired on May 15, 2026 per the xAI deprecation notice and replaces them with grok-4.3.

Retired models (May 15 2026)

• grok-3
• grok-4 / grok-4-0709
• grok-4-fast
• grok-4.1-fast
• grok-code-fast-1

Replacement

All retired models → x-ai/grok-4.3 per xAI's recommendation.

• 1M token context window
• $1.25 / $2.50 per 1M input/output tokens (OpenRouter pass-through)
• Supports reasoning effort levels (low/medium/high) and non-reasoning mode via effort: none

Changes

File	Change
backend/blocks/llm.py	Remove GROK_3, GROK_4, GROK_4_FAST, GROK_4_1_FAST, GROK_CODE_FAST_1 from LlmModel enum and metadata; add GROK_4_3
backend/data/block_cost_config.py	Remove retired model credit multipliers and token rates; add GROK_4_3 at $1.25/$2.50 pricing
backend/agents/*.json (16 files)	Remove retired models from provider maps; add x-ai/grok-4.3
backend/copilot/**/*test*.py (4 files)	Update xai/grok-4 test fixtures → xai/grok-4.3

Note: GROK_4_20 and GROK_4_20_MULTI_AGENT are not affected — they remain live.

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[github-actions]

🔍 PR Overlap Detection

This check compares your PR against all other open PRs targeting the same branch to detect potential merge conflicts early.

🔴 Merge Conflicts Detected

The following PRs have been tested and will have merge conflicts if merged after this PR. Consider coordinating with the authors.

• feat(backend): retire deprecated LLM models with family-aware migration #13089 (kcze · updated 22h ago)

  • 📁 autogpt_platform/backend/backend/
    • blocks/llm.py (2 conflicts, ~17 lines)
    • data/block_cost_config.py (1 conflict, ~6 lines)

• feat(platform): Add dynamic LLM model registry with admin UI #11699 (Bentlybro · updated 1d ago)

• fix: migrate OpenAI provider to use Responses API #11674 (devbyteai · updated 1d ago)

• feat(platform): Add Xiaomi MiMo-V2 models (Pro, Omni, Flash) via OpenRouter #12653 (Torantulino · updated 1d ago)

• feat(platform): Add missing OpenAI API models (GPT-5.4, O4-mini, O3-pro, etc.) #12619 (Torantulino · updated 2d ago)

🟢 Low Risk — File Overlap Only

These PRs touch the same files but different sections (click to expand)

• feat(backend/copilot): local-LLM AutoPilot for the no-API-key install #12993 (ntindle · updated 2h ago)

  • Shared files: autogpt_platform/backend/backend/copilot/baseline/service.py

• feat(blocks): add Avian as LLM provider #12221 (avianion · updated 7h ago)

  • autogpt_platform/backend/backend/data/block_cost_config.py: L200

• chore(backend): remove deprecated OpenAI GPT-4-turbo and GPT-3.5-turbo models #12121 (Bentlybro · updated 1d ago)

  • Shared files: autogpt_platform/backend/backend/blocks/llm.py, autogpt_platform/backend/backend/data/block_cost_config.py

• feat(blocks): add Google Gemma 4 31B model (google/gemma-4-31b-it) via OpenRouter #12658 (Bentlybro · updated 1d ago)

  • Shared files: autogpt_platform/backend/backend/blocks/llm.py, autogpt_platform/backend/backend/data/block_cost_config.py

• fix(backend/copilot): reuse existing credentials across chat sessions #12767 (0ubbe · updated 1d ago)

  • Shared files: autogpt_platform/backend/backend/copilot/baseline/service.py

• feat: add OpenAI GPT-image models to image blocks #12888 (Torantulino · updated 1d ago)

  • Shared files: autogpt_platform/backend/backend/data/block_cost_config.py

• fix(backend): clarify expired/unavailable model ID errors (fixes #12884) #12938 (Thatgfsj · updated 2d ago)

  • Shared files: autogpt_platform/backend/backend/blocks/llm.py

• feat(provider): added regolo.ai #13028 (Mte90 · updated 2d ago)

  • Shared files: autogpt_platform/backend/backend/blocks/llm.py

Summary: 5 conflict(s), 0 medium risk, 8 low risk (out of 13 PRs with file overlap)

---

Auto-generated on push. Ignores: openapi.json, lock files.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.21%. Comparing base (9789cf4) to head (c193d1c).

Additional details and impacted files

@@            Coverage Diff             @@
##              dev   #13118      +/-   ##
==========================================
+ Coverage   71.19%   71.21%   +0.01%     
==========================================
  Files        2203     2203              
  Lines      166432   166424       -8     
  Branches    16963    16963              
==========================================
+ Hits       118492   118516      +24     
+ Misses      44447    44417      -30     
+ Partials     3493     3491       -2     

Flag	Coverage Δ
platform-backend	79.76% <100.00%> (+<0.01%)	⬆️
platform-frontend-e2e	31.32% <ø> (+0.03%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
Platform Backend	79.76% <100.00%> (+<0.01%)	⬆️
Platform Frontend	40.44% <ø> (+0.09%)	⬆️
AutoGPT Libs	∅ <ø> (∅)
Classic AutoGPT	28.43% <ø> (ø)

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