AI News: Anthropic and OpenAI Spark a New Race to Cut Model Costs

Anthropic and OpenAI unveiled cheaper models on September 22, 2026, intensifying a price battle with lower-cost AI developers and giving business customers new alternatives. The releases are central to the latest AI news: Anthropic launched Claude Opus 5.5, while OpenAI added GPT-6 Sol and GPT-6 Luna to its model family.
What did Anthropic release?
Anthropic introduced Claude Opus 5.5 on September 22, 2026, positioning it as a less expensive option that can approach the performance of its top model. The company said the system matches Claude Fable 5.1 on most tasks, while independent reporting focused on lower token prices and reduced operating costs.
- According to Business Standard, 2026: Claude Opus 5.5 costs $4 per million input tokens and $20 per million output tokens.
- According to The Korea Economic Daily’s English report, 2026: those prices are below Opus 5’s $5 input and $25 output rates.
- According to Anthropic’s claims reported by Fortune, 2026: Opus 5.5 performs at the level of Fable 5.1 and costs about 40% less to run than Opus 5 in practical use.
Anthropic’s pricing distinction matters because a token rate does not capture the full cost of an AI task. A model that produces fewer unnecessary tokens or uses computing resources more efficiently can reduce a customer’s final bill even when the headline API price tells only part of the story.
How did OpenAI respond?
OpenAI announced GPT-6 Sol and GPT-6 Luna within hours of Anthropic’s release. The two systems target different workloads. Sol is aimed at more demanding tasks such as coding, while Luna is designed for high-volume jobs including document summarization and information extraction.
- According to CNBC, 2026: OpenAI cut API prices for GPT-6 Sol and GPT-6 Luna by 50% compared with promotional pricing for GPT-5.6.
- According to OpenAI’s statement quoted by Tech.co, 2026: improvements in caching and inference enabled the company to serve the models at a lower cost.
- According to CNBC, 2026: GPT-6 Sol sits below OpenAI’s GPT-6 Astra model in the company’s lineup.
The split reflects a practical change in how providers package advanced systems. Instead of offering one premium model for every job, companies are creating tiers for coding, reasoning, extraction, summarization and other workloads with different cost and speed requirements.
Why are the new models cheaper?
The companies point to efficiency rather than a simple reduction in capability. Anthropic said Opus 5.5 uses computing resources more effectively and produces less verbose responses. OpenAI attributed its lower pricing to caching and inference improvements, which affect how much computing power is needed when a customer sends a request.
- According to National Technology, 2026: Anthropic priced Opus 5.5 20% below Opus 5 on a per-token basis.
- According to National Technology, 2026: Anthropic said practical running costs fall by about 40% because of efficiency gains and lower output volume.
- According to The Korea Economic Daily’s English report, 2026: Opus 5.5 scored higher than Fable 5.1 on some coding and knowledge-work benchmarks, according to Anthropic.
Those figures come from company claims and should not be treated as a universal price comparison. The final expense depends on prompt length, response length, caching, usage volume, latency targets and the way a customer integrates a model into its software.
Who is affected by the price cuts?
Businesses that process large volumes of text or code stand to gain the most immediately. Lower inference costs can change the economics of customer-service agents, search tools, coding assistants, document systems and internal knowledge applications. Developers also gain more freedom to assign routine work to cheaper models while reserving premium systems for difficult requests.
- High-volume users can benefit from Luna’s focus on extraction and summarization, according to CNBC, 2026.
- Software teams working on code can evaluate GPT-6 Sol and Opus 5.5 against higher-priced frontier models, based on the product descriptions reported by CNBC and Business Standard, 2026.
- Customers comparing providers must assess total task cost rather than API prices alone, because efficiency and output length affect the final bill.
Cheaper access may also increase experimentation. A startup that could not justify frequent use of a premium model may now test automated workflows, provided the model meets its accuracy, privacy and reliability requirements.
Is this a response to cheaper rivals?
Yes. Reporting from CNBC, NDTV and other outlets links the releases to growing pressure from lower-cost and open-weight models, particularly from China and other cost-conscious markets. The competitive question is no longer only which model performs best. It is also which provider can deliver acceptable results at a price that supports large-scale deployment.
Open-weight systems add a different kind of pressure because customers can run them on their own infrastructure or through competing hosting services. Closed providers such as Anthropic and OpenAI retain advantages in model access, managed infrastructure and integrated tools, but price-sensitive buyers can compare more options than before.
What happens next?
Anthropic said it expects to release Sonnet 5.5 and Haiku 5.5 in the coming weeks. That planned expansion would give customers additional choices below or alongside Opus 5.5. OpenAI’s GPT-6 Sol and Luna releases also suggest that the company is building a broader range of models around its GPT-6 platform.
- According to Fortune, 2026: Anthropic expects Sonnet 5.5 and Haiku 5.5 to arrive in the following weeks.
- According to The Peninsula, 2026: the releases came days after officials from both companies had called for a slowdown in AI development.
- According to TechXplore, 2026: the cheaper launches arrived amid continuing concerns about the safety of rapidly advancing AI systems.
That timing creates a clear tension. Company leaders can call for caution around frontier development while their businesses continue releasing models designed to win more workloads. For customers, the immediate result is a wider field of systems with different trade-offs among price, capability, speed and safeguards.


