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More likely that they are embarrassed by how their attempts compare with OpenAI's Haiku analog, Luna.


Not so sure since Anthropic has 4 model families while OpenAI has 3 for GPT-5.6.

Claude Fable/Mythos vs GPT-5.6 Sol

Claude Opus vs GPT-5.6 Terra

Claude Sonnet vs GPT-5.6 Luna

Claude Haiku vs ?


The pricing on Luna is just insanely good. Haiku simply cannot compete at almost any intelligence level against DeepSeek V4 Flash or Luna.


No, you're off by one - likely because the OpenAI models punch above their weight in those comparison, hence my original message. You've shifted the comparisons to favor Anthropic.

Fable/Mythos are much larger than Sol. They match to Astra which is supposedly at least 10T. Astra is already publicly confirmed as a new family.

Opus matches to Sol. Sonnet to Terra. Haiku to Luna.

Anthropic is able to compete at the frontier high-end by launching massively large expensive models. But their inability to compete on small models belies their efficiency aspirations across the stack.




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