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RankingTerminal-Bench 2.1 · 2.1

Terminal-Bench 2.1 · 2.1

Data updated 12 Sept 2026

Bucket: Coding
Unit: percent
Direction: Higher is better
Version: 2.1
Display harness: GPT-5.6: Frontier intelligence that scales with your ambition
Board: https://openai.com/index/gpt-5-6/

Compare published benchmark results with category weights →

Models

Model	Score	Harness	Evidence	Source-recorded date
GPT-5.6 SolOpenAI	88.8% Reported settings & source Launch table reported configuration; per-cell reasoning effort unspecified Provider-published result; comparator measurements are not automatically independently reproduced. GPT-5.6: Frontier intelligence that scales with your ambition · Coding table / Terminal-Bench 2.1 / GPT‑5.6 Sol · reviewed 2026-09-06	GPT-5.6: Frontier intelligence that scales with your ambition	lab self-report	2026-09-06
GPT-5.6 TerraOpenAI	87.4% Reported settings & source Launch table reported configuration; per-cell reasoning effort unspecified Provider-published result; comparator measurements are not automatically independently reproduced. GPT-5.6: Frontier intelligence that scales with your ambition · Coding table / Terminal-Bench 2.1 / GPT‑5.6 Terra · reviewed 2026-09-06	GPT-5.6: Frontier intelligence that scales with your ambition	lab self-report	2026-09-06
GPT-5.5OpenAI	85.6% Reported settings & source Launch table reported configuration; per-cell reasoning effort unspecified Provider-published result; comparator measurements are not automatically independently reproduced. GPT-5.6: Frontier intelligence that scales with your ambition · Coding table / Terminal-Bench 2.1 / GPT‑5.5 · reviewed 2026-09-06	GPT-5.6: Frontier intelligence that scales with your ambition	lab self-report	2026-09-06
GPT-5.6 LunaOpenAI	84.7% Reported settings & source Launch table reported configuration; per-cell reasoning effort unspecified Provider-published result; comparator measurements are not automatically independently reproduced. GPT-5.6: Frontier intelligence that scales with your ambition · Coding table / Terminal-Bench 2.1 / GPT‑5.6 Luna · reviewed 2026-09-06	GPT-5.6: Frontier intelligence that scales with your ambition	lab self-report	2026-09-06
Claude Fable 5Anthropic	83.1% Reported settings & source Launch table reported configuration; per-cell reasoning effort unspecified Provider-published result; comparator measurements are not automatically independently reproduced. GPT-5.6: Frontier intelligence that scales with your ambition · Coding table / Terminal-Bench 2.1 / Claude Fable 5 · reviewed 2026-09-06	GPT-5.6: Frontier intelligence that scales with your ambition	lab self-report	2026-09-06
Claude Opus 4.8Anthropic	78.9% Reported settings & source Launch table reported configuration; per-cell reasoning effort unspecified Provider-published result; comparator measurements are not automatically independently reproduced. GPT-5.6: Frontier intelligence that scales with your ambition · Coding table / Terminal-Bench 2.1 / Claude Opus 4.8 · reviewed 2026-09-06	GPT-5.6: Frontier intelligence that scales with your ambition	lab self-report	2026-09-06
Gemini 3.1 ProGoogle	70.7% Reported settings & source Launch table reported configuration; per-cell reasoning effort unspecified Provider-published result; comparator measurements are not automatically independently reproduced. GPT-5.6: Frontier intelligence that scales with your ambition · Coding table / Terminal-Bench 2.1 / Gemini 3.1 Pro Preview · reviewed 2026-09-06	GPT-5.6: Frontier intelligence that scales with your ambition	lab self-report	2026-09-06
GPT-5.6 SolOpenAI	91.9% Reported settings & source Launch table reported configuration; per-cell reasoning effort unspecified; Ultra, four-agent orchestration Provider-published result; comparator measurements are not automatically independently reproduced. GPT-5.6: Frontier intelligence that scales with your ambition · Coding table / Terminal-Bench 2.1 / GPT‑5.6 Sol Ultra · reviewed 2026-09-06	GPT-5.6: Frontier intelligence that scales with your ambition	lab self-report	2026-09-06