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Capability gains

Anthropic releases Claude Instant 1.2

Anthropic released Claude Instant 1.2 with improvements in mathematics, coding, reasoning, safety and resistance to hallucination and jailbreaks.

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CURRENT ASSESSMENT · REVISION 1
TOWARD DOOM38confidence 96/100

Why it moved the index

The deployed low-latency model gained meaningful general capability while safety training and centralized API access constrained misuse and control difficulty.

Assessment history

  1. R1
    Toward 38 · confidence 96

    New August 2023 exact hosted-model release.

    12 Aug 2026

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  1. DoomBench assesses “Anthropic releases Claude Instant 1.2” as evidence moving toward doom, with magnitude 38 and confidence 96 out of 100 in the capability gains category.

  2. The DoomBench assessment of “Anthropic releases Claude Instant 1.2” is based on reporting from Anthropic and records the editorial rationale, source quality, attribution, and revision history.

  3. DoomBench summarizes “Anthropic releases Claude Instant 1.2” as follows: Anthropic released Claude Instant 1.2 with improvements in mathematics, coding, reasoning, safety and resistance to hallucination and jailbreaks.

    https://www.doombench.com/news/anthropic-releases-claude-instant-1-2-2023-08-09