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Large Language Models

443 summarised stories about Large Language Models, each linking back to the original source. Browse all topics →

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Saturday, 26 September 2026

Claude Opus 5.5 vs. Opus 5 on reasoning tasks: Cheaper, faster, but not better

The New Stack 3 weeks ago 31 ● 20 sources

An independent test compared Anthropic’s Claude Opus 5.5 with Opus 5 on reasoning prompts by running identical API calls and tracking time, token use, and cost. On the logic grid, Opus 5.5 cost $0.16 versus $0.27 for Opus 5 while finishing in 65 seconds versus 108 seconds. The cheaper and slightly faster model produced the same correct answers on two tests, but both models failed one constrained-ordering task and Opus 5.5 sometimes stopped early due to a refusal, so it was not consistently “better.”

Gemini 4 Rumors Are Mounting as Google Races to Catch Up

Trending Topics 3 weeks ago 12 ● 2 sources

Google DeepMind says Gemini 4 is already in post-training and should launch much earlier than the end of the year, while multiple leaks describe test versions and capabilities. The most cited claim is that the Gemini 4 Pro test model “Argon” can produce up to 256,000 tokens in a single response. If true, Google would have a longer-context, higher-output flagship to ship as it tries to close a gap in third-party benchmark rankings where its best model trails top competitors by 17 points.

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