GPT-4o
$2.50 per 1M input tokens and $10.00 per 1M output tokens · 128K context · vision, tools, JSON.
Prices checked Oct 21, 2026 · tracked by LLM Cost Index since Oct 21, 2026
Cheaper ways to run the same model: GPT-4o (batch) at $1.25 / $5.00 — same model, different service (e.g. batch processing with a delay).
What GPT-4o costs per month
Estimated monthly bill for typical workloads, using the cached-input price for repeated context. Try your own numbers in the cost calculator.
| Workload | Per month |
|---|---|
| Customer chatbot 1,000 conversations a day, 8 turns each | $1,470 |
| Document Q&A (RAG) 500 questions a day over retrieved documents | $289 |
| Coding / tool-using agent 200 tasks a day, long tool-heavy contexts | $803 |
| Content generation 30 long articles a day | $29.25 |
| Classification / extraction 100,000 short items a day | $2,700 |
Price history
We started tracking GPT-4o on Oct 21, 2026; the chart appears as soon as there is a second data point. See all recent price changes.
Where to run GPT-4o: 2 providers
Azure is the cheapest at $2.50 input / $10.00 output per 1M tokens. Uptime is the average over the last 30 days as reported by OpenRouter; see provider reliability.
Cheaper alternatives to GPT-4o
Models with the same tool calling, image input, structured output for at least 20% less (3:1 input/output mix), most capable first.
| Model | Input / 1M | Output / 1M | Context | Capabilities |
|---|---|---|---|---|
| Muse Spark 1.3 Meta | $1.25 | $4.25 | 1.05M | visiontoolsreasoningJSON |
| Grok 4.7 xAI | $2.00 | $6.00 | 500K | visiontoolsreasoningJSON |
| MiMo-V2.6-Pro Xiaomi | $0.435 | $0.87 | 1.05M | visionaudiotoolsreasoningJSONopen weights |
| $2.00 | $6.00 | 1M | visiontoolsreasoningJSON | |
| Grok 4.6 xAI | $2.00 | $6.00 | 500K | visiontoolsreasoningJSON |
How to pay less for GPT-4o
For a customer chatbot (1,000 conversations a day, 8 turns each) that costs $1,740 a month at list price without caching:
| Option | Per month | You save |
|---|---|---|
| Move to Muse Spark 1.3 (similar capabilities) | $569 | $1,171 (67%) |
| Switch to GPT-4o (batch) | $870 | $870 (50%) |
| Use prompt caching (60% of input cached) | $1,470 | $270 (16%) |
Other workloads: cut-your-bill tool for GPT-4o.
Specifications
| Model ID | openai/gpt-4o |
| Input | text, image, file |
| Output | text |
| Tool calling | Yes |
| Structured output | Yes |
| Reasoning mode | No |
| Open weights | No |
| Knowledge cutoff | 2023-10-31 |
| Released | May 13, 2024 |
FAQ
- How much does GPT-4o cost?
- $2.50 per million input tokens and $10.00 per million output tokens; cached input costs $1.25 per million. Prices as of Oct 21, 2026.
- What is the context window of GPT-4o?
- 128K tokens, with up to 16K output tokens per response.
- Does GPT-4o support images, tools and structured output?
- Images as input: yes. Tool calling: yes. Structured (JSON) output: yes. Reasoning mode: no.
- What are cheaper alternatives to GPT-4o?
- Models with the same key capabilities for at least 20% less include Muse Spark 1.3 ($1.25 / $4.25), Grok 4.7 ($2.00 / $6.00), MiMo-V2.6-Pro ($0.435 / $0.87).
More from OpenAI: all OpenAI models · how we collect prices