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Search results for Claude Opus 5

AI & Enterprise

Meta unveils Muse Spark 1.3, claims performance rivals Anthropic and OpenAI models

Meta unveiled Muse Spark 1.3, its most powerful large language model to date, and said it has narrowed the performance gap with major AI companies such as OpenAI and Anthropic. The company began providing the model through the Meta Model API on a paid basis for developers. Meta’s chief AI officer said the model posts its largest performance gains yet, citing strengths in coding and agent automation. Independent rankings placed variants near top competitors.

AI & Enterprise

Anthropic\'s Claude Fable 5.1 rated No.1, beating GPT and Grok

Anthropic has unveiled its new AI model, Claude Fable 5.1, which took the top two spots in an external language-model ranking shortly after launch, ahead of rival models from OpenAI, Google and others. In Artificial Analysis scores, Fable 5.1 variants scored 66 and 65, while Claude Opus 5 scored 63. Anthropic also reported higher performance on its benchmarks, kept token pricing, and cut cached-context reread costs. It also introduced Claude Mythos 5.1 with restricted access for high-risk fields.

AI & Enterprise

DeepSeek releases official V4 Pro model; 46 times cheaper than Claude with 5 percent performance gap

Chinese AI company DeepSeek has switched its flagship model to the official DeepSeek-V4-Pro-0813 build, without a separate announcement and with API prices unchanged. Existing performance assessments were based on a preview version, so the official build requires external verification. DeepSeek’s benchmarks show Anthropic’s Claude Fable 5 averaged 5.3 percent higher across nine comparable agent benchmarks, while DeepSeek is far cheaper on mixed input-output pricing.