Anthropic released Claude Sonnet 5.5 on September 28, and OpenAI released GPT 6.1 Sol on September 29. Coincidentally, the two models have exactly the same listed API prices on OpenRouter: $2 per million input tokens and $10 per million output tokens. Leiphone(WeChat public account: Leiphone) The two companies are moving in highly similar directions: compressing the capabilities of near-top-tiermodels into a product tier that is faster, cheaper, and suited