OpenAI vs Anthropic: models, pricing & how they compare

A side-by-side read on OpenAI and Anthropic, anchored on each lab's flagship model, with API pricing, context windows, and their current Vikshy Score. For the full line-ups, see OpenAI models and Anthropic models.

OpenAI

85.3Frontier leader

Vikshy Score →

GPT-5.6 Sol Frontier

Context: 1M
Input /M: $5.00
Output /M: $30.00
Modality: Multimodal
Access: API + ChatGPT

Teams tackling the hardest agentic and coding work.

Anthropic

83.4Frontier leader

Vikshy Score →

Claude Fable 5 Frontier

Context: 1M
Input /M: $10.00
Output /M: $50.00
Modality: Multimodal
Access: API + Claude apps

Ambitious, long-horizon agent work.

How they compare

On flagship API input price, OpenAI is cheaper ($5.00 vs $10.00 per million tokens).
On the Vikshy Score, OpenAI ranks higher today (85.3 vs 83.4).

Flagship = each lab's highest-tier current model. Pricing and specs are the labs' listed figures; the Vikshy Score is a daily competitive reading, what is this?

OpenAI vs Anthropic, common questions

Is OpenAI or Anthropic cheaper?

By flagship API input price, OpenAI is cheaper: $5.00 (OpenAI) vs $10.00 (Anthropic) per million input tokens.

Which has a larger context window, OpenAI or Anthropic?

Both flagship models list a 1M context window.

Which ranks higher on the Vikshy Score, OpenAI or Anthropic?

OpenAI, at 85.3 versus 83.4, as of 2026-07-24. The Score moves daily.