GPT-4 Turbo.
OpenAI's pre-GPT-5 flagship — still extensively deployed.
No self-host path — closed weights.
GPT-4 Turbo's weights aren't published. Use it via the access providers below.
Cheapest hosted endpoints.
Variants in the GPT family.
Frequently asked.
How do I run GPT-4 Turbo?
Where can I access GPT-4 Turbo?
How much does it cost to run GPT-4 Turbo?
Is GPT-4 Turbo open-source or proprietary?
What it costs per month across providers.
Estimate your monthly bill for GPT-4 Turbo across every host that publishes per-token pricing. Slide your token volumes; the chart + table re-rank cheapest-first.
Cheapest provider on the left.
Total monthly cost — input + output tokens combined.
Bill breakdown.
What it's best at.
Scores normalised against benchmark ceilings (100 = perfect). Coloured by tier — coral 80+ frontier, lavender 65+ strong, sage 50+ solid, slate below.
About GPT-4 Turbo.
GPT-4 Turbo was OpenAI's flagship for early-to-mid 2024 before GPT-4o + GPT-5 superseded it. Still widely deployed because of the price/performance and the years of prompt engineering tuned to its quirks. 128K context, JSON mode, function calling.