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Autonomous LLM training on PostTrainBench

63.75ScoreInstruct
2.150818.142934.13550.1271Jun 30, 2026

Evaluation results

MethodLinks
InstructHarness=Instruct, Base Model=Qwen3-4B2026.0663.75—
InstructHarness=Instruct, Base Model=Qwen3-1.7B2026.0649.41—
InstructHarness=Instruct, Base Model=Gemma-4B2026.0646.58—
InstructHarness=Instruct, Base Model=SmolLM-3B2026.0644.81—
AutoTrainess w/ GPT-5.4 (Codex)Harness=AutoTrainess, Agent Backbone=GPT-5.4, Scaffold=Codex, Base Model=Qwen3-4B2026.0632.6—
CLI-only w/ GPT-5.4 (Codex)Harness=CLI-only, Agent Backbone=GPT-5.4, Scaffold=Codex, Base Model=Qwen3-4B2026.0627.09—
AutoTrainess w/ GPT-5.4 (OpenCode)Harness=AutoTrainess, Agent Backbone=GPT-5.4, Scaffold=OpenCode, Base Model=Qwen3-4B2026.0625.91—
AutoTrainess w/ GPT-5.4 (Codex)Harness=AutoTrainess, Agent Backbone=GPT-5.4, Scaffold=Codex, Base Model=Qwen3-1.7B2026.0625.67—
AutoTrainess w/ GPT-5.4 (Codex)Harness=AutoTrainess, Agent Backbone=GPT-5.4, Scaffold=Codex, Base Model=SmolLM-3B2026.0625.6—
CLI-only w/ GPT-5.4 (Codex)Harness=CLI-only, Agent Backbone=GPT-5.4, Scaffold=Codex, Base Model=Gemma-4B2026.0624.88—
AutoTrainess w/ GPT-5.4 (OpenCode)Harness=AutoTrainess, Agent Backbone=GPT-5.4, Scaffold=OpenCode, Base Model=SmolLM-3B2026.0624.2—
AutoTrainess w/ DeepSeek-V4-Flash (OpenCode)Harness=AutoTrainess, Agent Backbone=DeepSeek-V4-Flash, Scaffold=OpenCode, Base Model=Gemma-4B2026.0624.01—
CLI-only w/ GPT-5.4 (Codex)Harness=CLI-only, Agent Backbone=GPT-5.4, Scaffold=Codex, Base Model=SmolLM-3B2026.0623.96—
AutoTrainess w/ GPT-5.4 (Codex)Harness=AutoTrainess, Agent Backbone=GPT-5.4, Scaffold=Codex, Base Model=Gemma-4B2026.0623.88—
CLI-only w/ GPT-5.4 (OpenCode)Harness=CLI-only, Agent Backbone=GPT-5.4, Scaffold=OpenCode, Base Model=Gemma-4B2026.0622.32—
AutoTrainess w/ GPT-5.4 (OpenCode)Harness=AutoTrainess, Agent Backbone=GPT-5.4, Scaffold=OpenCode, Base Model=Qwen3-1.7B2026.0622.08—
AutoTrainess w/ DeepSeek-V4-Flash (OpenCode)Harness=AutoTrainess, Agent Backbone=DeepSeek-V4-Flash, Scaffold=OpenCode, Base Model=Qwen3-4B2026.0621.76—
AutoTrainess w/ GPT-5.4 (OpenCode)Harness=AutoTrainess, Agent Backbone=GPT-5.4, Scaffold=OpenCode, Base Model=Gemma-4B2026.0621.2—
CLI-only w/ GPT-5.4 (OpenCode)Harness=CLI-only, Agent Backbone=GPT-5.4, Scaffold=OpenCode, Base Model=Qwen3-1.7B2026.0620.01—
CLI-only w/ GPT-5.4 (OpenCode)Harness=CLI-only, Agent Backbone=GPT-5.4, Scaffold=OpenCode, Base Model=SmolLM-3B2026.0619.51—
CLI-only w/ GPT-5.4 (OpenCode)Harness=CLI-only, Agent Backbone=GPT-5.4, Scaffold=OpenCode, Base Model=Qwen3-4B2026.0617.01—
CLI-only w/ GPT-5.4 (Codex)Harness=CLI-only, Agent Backbone=GPT-5.4, Scaffold=Codex, Base Model=Qwen3-1.7B2026.0616.9—
AutoTrainess w/ DeepSeek-V4-Flash (OpenCode)Harness=AutoTrainess, Agent Backbone=DeepSeek-V4-Flash, Scaffold=OpenCode, Base Model=Qwen3-1.7B2026.0616.72—
AutoTrainess w/ DeepSeek-V4-Flash (OpenCode)Harness=AutoTrainess, Agent Backbone=DeepSeek-V4-Flash, Scaffold=OpenCode, Base Model=SmolLM-3B2026.0615.82—
CLI-only w/ DeepSeek-V4-Flash (OpenCode)Harness=CLI-only, Agent Backbone=DeepSeek-V4-Flash, Scaffold=OpenCode, Base Model=Qwen3-4B2026.0615.18—
CLI-only w/ DeepSeek-V4-Flash (OpenCode)Harness=CLI-only, Agent Backbone=DeepSeek-V4-Flash, Scaffold=OpenCode, Base Model=SmolLM-3B2026.0614.77—
BaseHarness=Base, Base Model=Qwen3-4B2026.0614.34—
CLI-only w/ DeepSeek-V4-Flash (OpenCode)Harness=CLI-only, Agent Backbone=DeepSeek-V4-Flash, Scaffold=OpenCode, Base Model=Gemma-4B2026.0610.43—
CLI-only w/ DeepSeek-V4-Flash (OpenCode)Harness=CLI-only, Agent Backbone=DeepSeek-V4-Flash, Scaffold=OpenCode, Base Model=Qwen3-1.7B2026.068.14—
BaseHarness=Base, Base Model=Qwen3-1.7B2026.066.66—
BaseHarness=Base, Base Model=Gemma-4B2026.064.6—
BaseHarness=Base, Base Model=SmolLM-3B2026.064.52—
AutoTrainess w/ DeepSeek-V4-Flash (OpenCode)Harness=AutoTrainess, Agent Backbone=DeepSeek-V4-Flash, Scaffold=OpenCode2026.06—19.58
AutoTrainess w/ GPT-5.4 (Codex)Harness=AutoTrainess, Agent Backbone=GPT-5.4, Scaffold=Codex2026.06—26.94
AutoTrainess w/ GPT-5.4 (OpenCode)Harness=AutoTrainess, Agent Backbone=GPT-5.4, Scaffold=OpenCode2026.06—23.35
BaseHarness=Base2026.06—7.53
CLI-only w/ DeepSeek-V4-Flash (OpenCode)Harness=CLI-only, Agent Backbone=DeepSeek-V4-Flash, Scaffold=OpenCode2026.06—12.13
CLI-only w/ GPT-5.4 (Codex)Harness=CLI-only, Agent Backbone=GPT-5.4, Scaffold=Codex2026.06—23.21
CLI-only w/ GPT-5.4 (OpenCode)Harness=CLI-only, Agent Backbone=GPT-5.4, Scaffold=OpenCode2026.06—19.71
InstructHarness=Instruct2026.06—51.14