The Hallway Track
Product Launches

[AINews] Claude Opus 5.5, the new default model for AINews — and everybody cuts prices 40-50%

Latent Space Blog · Sep 23, 2026 · Product Launches

Anthropic launched Claude Opus 5.5, ~Fable 5.1-level performance at 40% lower cost, triggering industry-wide 40-50% price cuts.

“It puts the most important information up front and follows the writing rules you give it, which makes long sessions easier to follow.”

Anthropic released Claude Opus 5.5, the first in its Claude 5.5 family, matching Fable 5.1 on most tasks while costing 40% less than Opus 5 and emphasizing notable writing improvements. OpenAI countered with GPT-6 Sol and Luna at 50% lower prices, and both labs credited efficiency gains for sweeping 40-50% API price cuts. This marks a major frontier-model release plus an industry-wide pricing shift, with AINews itself migrating to Opus 5.5.

claude-opus-5.5 model-launch price-cuts openai-gpt-6 multiagent

Watch / read the original source →