The cost of intelligence continues to fall rapidly after new frontiers are reached: Grok 4 Fast brings the cost of the Intelligence Index >60 category down to just $0.2/$0.5 per million input/output tokens We track the lowest priced model for different tiers of intelligence to measure the decline in the cost of intelligence over time. The cost of each new level of intelligence appears to be falling much faster in 2025 than 2023-2024. OpenAI’s o3 was the earliest model to be in our >60 category when it launched in April. At launch, o3’s pricing was $10/$40 - but OpenAI later cut its price to $2/$8 in June, which is what is shown on the chart below. Comparing blended prices (3:1 input to output tokens, as shown on the chart below), Grok 4 Fast is priced 64 times lower than o3’s release price and 12 times lower than o3’s current blended price (3:1 input to output tokens). Prices for reference: ➤ Grok 4 Fast: $0.2/$0.5 per million input/output tokens ➤ o3 original launch price: $10/$40 ➤ o3 updated June price: $2/$8 Please note chart below is based on token pricing - not our Cost to Run Artificial Analysis Intelligence Index metric.