Common GPT 5.5 pricing misconception.

Reddit r/artificial / 4/24/2026

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Key Points

Some users believe ChatGPT 5.5 is about twice as expensive as 5.4 based on API price comparisons, but the article argues this conclusion is overly simplistic.
The piece claims GPT 5.5 is more token-efficient in practice, which can make it faster and lower the overall cost to complete a task despite higher apparent per-token pricing.
A direct comparison to Claude Opus 4.7 suggests Opus remains far more expensive—estimated at roughly 5 to 10 times higher on ARC-AGI-2—even when contrasted with GPT 5.5.
It also notes that Anthropic changed the tokenizer for Opus 4.7, which reportedly increases token counts by about 1.35x, further raising real-world usage cost.
Overall, the article emphasizes that headline pricing must be adjusted for token efficiency and tokenizer differences to reflect actual costs.

Many people have pointed out that ChatGPT 5.5 appears to be twice as expensive as 5.4 based on API pricing, which makes it look pricier than Opus 4.7. But the comparison is not that simple.

GPT 5.5 is significantly more token-efficient in practice, which can make it faster and reduce the total cost of completing a task. When you compare it directly to Opus 4.7, the image here shows that Claude Opus 4.7 is still much more expensive than GPT 5.5, around 5 to 10 times more expensive on ARC-AGI-2.

Anthropic also changed the tokenizer for Opus 4.7, which appears to increase token counts by about 1.35x. Combined with Anthropic’s already high API pricing, this makes Claude substantially more expensive in real world usage than a simple headline price comparison suggests.

submitted by /u/Blake08301
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