# Anthropic says Opus 5.5 saves 40%; OpenAI cuts GPT-6 costs

- Published: 2026-09-22T21:25:18.000Z
- Updated: 2026-09-27T22:13:49.131Z
- Section: Models
- Page: https://aidailyjournal.com/en/n/2026/09/22/anthropic-says-opus-5-5-saves-40-openai-cuts-gpt-6-costs/
- Sources: [Ars Technica](https://arstechnica.com/ai/2026/09/new-anthropic-openai-models-make-same-promise-a-little-more-for-a-lot-less-money)

## Summary

Anthropic says Opus 5.5 can deliver savings of nearly 40% compared with Opus 5 for typical workloads at default settings. The company attributes the reduction both to lower token prices and to the model using fewer tokens to complete tasks. It is also described as capable in high-risk areas such as cybersecurity and biology; requests flagged in those areas may be automatically routed to an older model under the same protections used for Fable 5.1.

OpenAI released GPT-6 Sol and Luna as an iterative update trained with methods similar to those used for GPT-6 Astra. The company says they are, depending on the benchmark, a few percentage points more capable than their predecessors on certain tasks while costing half as much to use. Sol is the more efficient option for demanding tasks, while Luna prioritizes speed and low cost, according to Ars Technica’s description.

## Why it matters (editorial interpretation)

The cost reductions claimed by both companies could give users more room to choose among performance, speed, and price when using these models. In Anthropic’s case, the automatic routing of requests in high-risk areas will also matter for assessing how those savings coexist with existing safeguards.

_Summary written by AI Daily Journal in its own words, based on the sources above. For details, read the original articles._