GPT-5.4 vs Mistral Large 3
How GPT-5.4 (OpenAI) and Mistral Large 3 (Mistral) compare on price and capabilities — and how to use either on anyAInow without a subscription.
GPT-5.4
Balanced
Mistral Large 3
Flagship
Provider
OpenAI
Mistral
Best for
Balanced
Flagship
Reads images
Yes
Yes
GPQA Diamond
92%
68%
AA Coding Index
71.1%
20.1%
MMLU-Pro
—
80.7%
Price
from $30 / 1M
from $10 / 1M
Subscription
None
None
Benchmark source: artificialanalysis.ai, as of 13 Aug 2026. Higher is better; figures are publisher-reported where not independently verified.
GPT-5.4 or Mistral Large 3?
GPT-5.4 is a balanced-tier model, while Mistral Large 3 is flagship-tier. Mistral Large 3 is the more cost-efficient of the two. On the GPQA Diamond reasoning benchmark, GPT-5.4 leads 92% to 68%. On anyAInow you can use either — or run both side by side to see which answers your prompts better — pay-as-you-go with no subscription.