# Anthropic launches Claude models 20% cheaper than OpenAI

> Anthropic debuts Fable 5.2 and Mythos 5.2, undercutting OpenAI's pricing while claiming superior performance on coding and specialist tasks.
- Title: Anthropic launches Claude models 20% cheaper than OpenAI
- Summary: Anthropic debuts Fable 5.2 and Mythos 5.2, undercutting OpenAI's pricing while claiming superior performance on coding and specialist tasks.
- Keywords: anthropic, claude fable 5.2, claude mythos 5.2, openai, gpt-6 astra, ai pricing, ai models, Fortune
- Source: Fortune — https://fortune.com/2026/11/09/anthropic-debuts-updated-claude-fable-and-mythos-models-undercutting-price-of-openais-gpt-6-astra-by-up-to-80
- Author: Emily Forlini
- Read time: 1 min
- Topics: anthropic, claude fable 5.2, claude mythos 5.2, openai, gpt-6 astra, ai pricing, ai models
## Anthropic launches two new models
Anthropic debuted Claude Fable 5.2 and Mythos 5.2 on Monday, positioning them as answers to OpenAI's GPT-6 Astra, which launched in early September.
## Pricing undercuts OpenAI significantly
Fable 5.2 and Mythos 5.2 cost eight dollars per million input tokens and forty dollars per million output tokens, compared to ten and fifty for GPT-6 Astra.For cached tokens, Anthropic's models are eighty percent cheaper.
## Anthropic claims strong test results
The company reports its new models helped engineers complete software migrations, designed three working electronic devices from scratch, and formalized the proof of Fermat's Last Theorem in thirty hours.
## Superior coding performance claimed
Anthropic says Fable 5.2 and Mythos 5.2 perform better than competitors on coding benchmarks, with over ninety percent of the company's own code written by AI.OpenAI's Codex has gained ground recently due to lower pricing.
## Cybersecurity and physics breakthroughs
Anthropic claims an unnamed security company found that one in six confirmed bugs found by Claude Mythos 5.2 were missed by all other frontier models tested.
## Hardware and robotics focus
The new models allegedly designed and produced three working electronic devices with circuit boards, three D printed enclosures, and software based on a one paragraph prompt, an area where Anthropic is leaning more than OpenAI.
## Models now available across platforms
Claude Fable 5.2 is available today on Amazon Web Services, Google Cloud, and Microsoft Azure.Mythos 5.
## Key takeaway

Anthropic released Claude Fable 5.2 and Mythos 5.2 on Monday, priced 20% below OpenAI's GPT-6 Astra, as the company seeks to accelerate revenue growth ahead of its IPO.