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Grok 4.5 claims top spot on Long-Horizon Terminal-Bench, beating Claude and GPT models

By PulseAugur Editorial · [1 sources] ·

Grok 4.5 has achieved the top position on the Long-Horizon Terminal-Bench, surpassing Claude Fable 5, Claude Opus 4.8, and GPT-5.6-sol. This ranking was determined by a strict binary pass rate, where a task was only considered successful if it was completely solved with a perfect reward and no errors. Elon Musk highlighted this achievement, calling the Grok build "awesome." AI

IMPACT Sets a new benchmark for long-horizon tasks, potentially influencing future model development and evaluation.

RANK_REASON Frontier lab model release with benchmark performance claim. [lever_c_demoted from frontier_release: ic=1 ai=1.0]

Read on X — Elon Musk →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Grok 4.5 claims top spot on Long-Horizon Terminal-Bench, beating Claude and GPT models

How we ranked this

Signal score
0 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Significant
Frontier lab model release with benchmark performance claim. [lever_c_demoted from frontier_release: ic=1 ai=1.0]
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
model release, product
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
68 days old
Aged out of breaking-news scoring windows; ranking reflects the durable signal from the full source set.

Full methodology in our editorial standards.

COVERAGE [1]

  1. X — Elon Musk TIER_1 English(EN) · elonmusk ·

    Try Grok Build, it’s awesome!

    Try Grok Build, it’s awesome! https://t.co/lOJK57wDP5

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