# Anthropic topped 2026 AI model rankings while OpenAI stayed under $2 trillion

*Science. 52% certain. Tuesday, 5 January 2027*

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

**Google led AI performance in October and NVIDIA remained the world's biggest company at year-end.**

The AI competition sharpened throughout 2026 as Anthropic released the year's top model, while Google held the lead in October. By the end of the year, Anthropic's model was judged the best overall. Meanwhile, NVIDIA remained the Largest company at the close of December.

Industry assessments placed Google's AI system ahead of rivals in October, surpassing offerings from Anthropic, OpenAI and Meta. The evaluation considered performance across benchmark tasks and deployment readiness.

Anthropic's model was rated superior at the close of 2026, overtaking Google, OpenAI and xAI. The judgment was made on 31 December after a year of intensive development.

A potential acquisition of the company also did not occur before 2027. Both facts were confirmed on 1 January and 5 January respectively.

OpenAI, Google DeepMind and Anthropic all remained headquartered in the United Kingdom or United States through 2026. No relocation was recorded before 2027. This status was verified on 10 November.

## Analysis

Google's October advantage demonstrates its continued ability to produce cutting-edge AI systems, but being surpassed later by Anthropic suggests a rapidly evolving competitive landscape where breakthroughs can quickly alter the hierarchy.

OpenAI's valuation remaining under $2 trillion and the absence of an acquisition indicate that the firm maintained strategic independence, likely prioritising internal development and safety considerations over immediate expansion through merger.

The decision of the three leading AI firms to stay domiciled in the UK or US reflects ongoing regulatory and geopolitical pressures, while NVIDIA's status as the Largest company highlights the central role of hardware and chip manufacturers in supporting the AI arms race.

### Background consulted for the analysis

- [OpenAI in talks for $30B at $1.4T, IPO delayed to 2027 | AI Weekly](https://aiweekly.co/alerts/openai-in-talks-for-30b-at-14t-ipo-delayed-to-2027)
- [OpenAI - Wikipedia](https://en.wikipedia.org/wiki/OpenAI)
- [OpenAI CEO Sam Altman Says IPO Won't Be Until 2027 Due to AI Safety Concerns - Bloomberg](https://www.bloomberg.com/news/articles/2026-09-12/openai-ipo-won-t-happen-until-2027-sam-altman-tells-fortune)
- [Sam Altman says OpenAI’s IPO window has been pushed to 2027—but markets aren’t the culprit | Fortune](https://fortune.com/2026/09/15/sam-altman-says-openai-ipo-window-pushed-2027-but-markets-arent-the-culprit/)

## What this was built from

- **Largest Company end of December 2026?**: NVIDIA, 78%; settles Friday, 1 January 2027 (polymarket). [Market](https://polymarket.com/event/largest-company-end-of-december-2026)
- **Will Anthropic's valuation hit (HIGH) $3.0T by December 31?**: No, 78%; settles Tuesday, 5 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, 52%; settles Thursday, 31 December 2026 (polymarket). [Market](https://polymarket.com/event/which-company-has-best-ai-model-end-of-2026)
- **Which company has the best AI model end of October?**: Google, 71%; settles Saturday, 31 October 2026 (polymarket). [Market](https://polymarket.com/event/which-company-has-the-best-ai-model-end-of-october)
- **Will OpenAI be acquired before 2027?**: No, 98%; settles Friday, 1 January 2027 (polymarket). [Market](https://polymarket.com/event/which-companies-will-be-acquired-before-2027)
- **Will Anthropic's valuation hit (HIGH) $1.75T by December 31?**: Yes, 79%; settles Tuesday, 5 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, 90%; settles Tuesday, 5 January 2027 (polymarket). [Market](https://polymarket.com/event/will-openais-valuation-hit-by-december-31)
- **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)