Claude Opus 5.5 vs GPT-6 Astra vs GPT-6 Sol: the effort knob matters more than the model

Honest comparison of fine-tuning options across Anthropic, OpenAI, and open-weight models. When fine-tuning wins, when RAG wins, and when prompt engineering is enough - from an Anthropic Partner shipping production ML.

OpenAI has released GPT-6 Astra, its newest frontier model, less than a week after Anthropic’s Claude...

OpenAI's latest GPT-5.6 changes offer concrete evidence of a strategy that matters to anyone building...

The chain of events from Anthropic’s Claude Mythos 5 uploading malicious package to PyPI, OpenAI...

The Numbers That Matter OpenAI just shipped GPT-5.6 Sol with what might be the most...

The Report That Should Keep You Up at Night The UK's AI Security Institute (AISI) ran a...

Dario Amodei's "We Must Pace the Frontier" essay, OpenAI's misalignment incident reports, the...

When GPT-6 Astra shipped on September 3, the headline was that OpenAI rated it Critical for...

OpenAI has announced Astra for Law, a legal AI foundation that combines its GPT-6 Astra flagship...

Former Anthropic researcher Jacob Coxon recently resigned and accused OpenAI and Anthropic of racing...