OpenAI: GPT-4 Turbo API Pricing
OpenAI: GPT-4 Turbo costs $10.00 per 1M input tokens and $30.00 per 1M output tokens. Context window: 128K. Prices verified 2026-10-21 · source
Alternatives to consider
100% cheaper with nearly identical quality (20.1 vs 7)
Cheapest openai model — 100% less per month
Rebuilt daily from our snapshot archive — the chart appears once a model has 5+ snapshots of history.
From our own daily snapshot archive — independent of provider announcements.
Intelligence measures reasoning/knowledge/coding benchmarks. A high score with a low blended price = value pick; check the value chart to see where this model lands.
Training data ends here — newer events require retrieval or web search.
What would OpenAI: GPT-4 Turbo cost you per month?
| Workload | Requests/mo | Avg tokens (in/out) | Est. monthly cost |
|---|---|---|---|
| Light chatbot | 10,000 | 800 / 400 | $200.00 |
| Coding agent | 5,000 | 8,000 / 2,000 | $700.00 |
| RAG pipeline | 30,000 | 4,000 / 500 | $1650.00 |
| Doc summarizer | 2,000 | 20,000 / 1,000 | $460.00 |
Estimates use list prices without prompt caching. Caching can cut input cost by up to 90% on repeated context.
About OpenAI: GPT-4 Turbo
The latest GPT-4 Turbo model with vision capabilities. Vision requests can now use JSON mode and function calling. Training data: up to December 2023.
Compare OpenAI: GPT-4 Turbo with
- GPT-4 Turbo vs OpenAI: GPT-5.6 Terra Pro
- GPT-4 Turbo vs Anthropic: Claude Fable 5
- GPT-4 Turbo vs Anthropic: Claude Opus 5
- GPT-4 Turbo vs OpenAI: GPT-5.6 Sol
Popular head-to-heads — see all on the comparisons index.
Frequently asked questions
How much does OpenAI: GPT-4 Turbo cost?
OpenAI: GPT-4 Turbo costs $10.00 per 1M input tokens and $30.00 per 1M output tokens. Verified 2026-10-21 — provider source.
What is the context window?
128K tokens, with up to 4K output tokens per response. That's roughly 160 pages of text in a single request.
Does it support prompt caching?
Prompt-caching pricing is not published for this model via OpenRouter.
What's a cheaper alternative?
ScaleDown: Summarize saves about 99% on a typical workload with comparable quality.
Official resources
- OpenAI: GPT-4 Turbo on OpenRouter — live endpoint, pricing source of record.
- Artificial Analysis leaderboard → — independent intelligence and performance rankings.
- OpenAI pricing → — first-party pricing and billing details.
- LMArena leaderboard → — independent human-preference rankings.
- Shred your current bill — paste a CSV and see if switching saves money.