# Anthropic topped AI model rankings as OpenAI stayed unchanged

*Science. 68% certain. Friday, 1 January 2027*

> Speculative fiction assembled from prediction-market prices. This has not happened.

**Anthropic led AI model rankings in October; OpenAI remained independent and its valuation stayed below $2 trillion.**

On Friday 1 January 2027, Anthropic was identified as having the best AI model at the end of October. At the same time, OpenAI did not undergo acquisition, its valuation remained below $2.0 trillion, and it did not relocate from the United States. These outcomes highlighted divergent trajectories for the two firms.

The assessment was based on performance metrics compiled through October. Anthropic's model outperformed offerings from Google, OpenAI, and Meta. This result reinforced its status as the leading AI model developer.

A review of corporate activity up to 1 January confirmed that OpenAI had not been acquired by any entity. The decision contrasted with speculation about potential mergers in the sector. The company's ownership structure remained unchanged.

Consequently, OpenAI's financial growth appeared stagnant relative to expectations.

Regulatory filings indicated that OpenAI, Google Deepmind, and Anthropic all remained domiciled in their original United States or United Kingdom jurisdictions through the end of 2026. No de-domiciling actions were recorded before 2027. The companies continued operating from their established bases.

## Analysis

The distinction can bolster investor confidence and draw talent seeking to work on leading technology. As a result, Anthropic could see increased funding and partnership opportunities.

This static position could prompt internal reassessment of growth strategies.

Anthropic's ascent could pressure rivals to accelerate development or seek collaborations, while OpenAI's inertia might lead to consolidation pressures. Future dynamics will depend on how each firm responds to these divergent outcomes.

## What this was built from

- **Will Anthropic's valuation hit (HIGH) $3.0T by December 31?**: No, 81%; settles Friday, 1 January 2027 (polymarket). [Market](https://polymarket.com/event/will-anthropics-valuation-hit-by-december-31)
- **Which company has best AI model end of 2026?**: Anthropic, 68%; settles Friday, 1 January 2027 (polymarket). [Market](https://polymarket.com/event/which-company-has-best-ai-model-end-of-2026)
- **Will Anthropic's valuation hit (HIGH) $1.75T by December 31?**: Yes, 81%; settles Friday, 1 January 2027 (polymarket). [Market](https://polymarket.com/event/will-anthropics-valuation-hit-by-december-31)
- **Will OpenAI's valuation hit (HIGH) $2.0T by December 31?**: No, 87%; settles Friday, 1 January 2027 (polymarket). [Market](https://polymarket.com/event/will-openais-valuation-hit-by-december-31)
- **Which company has the best AI model end of October?**: Anthropic, 86%; settles Sunday, 1 November 2026 (polymarket). [Market](https://polymarket.com/event/which-company-has-the-best-ai-model-end-of-october)
- **Will OpenAI be acquired before 2027?**: No, 99%; settles Friday, 1 January 2027 (polymarket). [Market](https://polymarket.com/event/which-companies-will-be-acquired-before-2027)
- **Will OpenAI, Google Deepmind or Anthropic de-domicile from the UK/US before 2027?**: No, 93%; settles Tuesday, 10 November 2026 (manifold). [Market](https://manifold.markets/NathanpmYoung/will-openai-google-deepmind-or-anth)