AI

The AI Price War: Claude Opus 5.5 vs GPT-6 Sol and Luna

📅 Sep 26, 2026

✍️ Aamir Raza

The AI Price War Just Got Real

Anthropic and OpenAI slashed model prices hours apart. Here is what changed.

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Anthropic Fired First: Claude Opus 5.5

About 40% cheaper than Opus 5 at $4/$20 per million tokens, and 30% faster. It matches the pricier Fable 5.1 on key benchmarks.

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OpenAI Answered in 90 Minutes

GPT-6 Sol launched the same afternoon at $2/$10 per million tokens — half of what last generation cost.

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Meet GPT-6 Luna: the $0.10 Model

OpenAI's budget tier handles summaries and extraction at $0.10 per million input tokens — built for high-volume jobs.

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Even the Em Dashes Got Cut

Users say Opus 5.5 dropped the telltale AI writing style. The cheapest models may soon sound the most human.

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