GPT-4o is still available, but OpenAI has released newer models. Details
Cost Comparison
| Prompts | GPT-4o | Gemini 3.1 Pro |
|---|---|---|
| 1 | $0.0063 | $0.0070 |
| 100 | $0.6250 | $0.7000 |
| 1,000 | $6.25 | $7.00 |
| 10,000 | $62.50 | $70.00 |
| 100,000 | $625.00 | $700.00 |
Based on 500 input + 500 output tokens per prompt. Prices verified October 2026. Embed this calculator
At 10,000 requests per day, GPT-4o costs $1,875.00/month vs Gemini 3.1 Pro at $2,100.00/month — GPT-4o is 11% cheaper.
| GPT-4o | Gemini 3.1 Pro | |
|---|---|---|
| Input price | $2.50 / 1M | $2.00 / 1M |
| Output price | $10.00 / 1M | $12.00 / 1M |
| Cached input | $1.25 / 1M | $0.20 / 1M |
| Typical prompt | $0.0063 | $0.0070 |
| Batch discount | 50% off | 50% off |
| Context window | 128K tokens | 1M tokens |
| Max output | 16,384 tokens | 65,536 tokens |
| Knowledge cutoff | Oct 2023 | Jan 2025 |
| Input types | Text, Images, PDF | Text, Images, Video, Audio, PDF |
| Reasoning mode | No | Always on |
| Open weights | No | No |
| Released | May 13, 2024 | February 19, 2026 |
| Status | Older, still available | Current |
Try It Yourself
How many tokens you expect the model to generate per response
Showing a typical prompt (500 input + 500 output tokens) across 27 models. Paste your own prompt above for an exact count.
| Model | Per Prompt | Prompts / $1 | Monthly |
|---|---|---|---|
GPT-4oOlder OpenAI | $0.00630.63¢ | 160 | $18.75 |
| $0.00700.7¢ | 142 | $21.00 | |
GPT-6 LunaCheapest OpenAI | $0.0003000.03¢ | 3,333 | $0.9000 |
| Mistral | $0.0003750.037¢ | 2,666 | $1.13 |
| OpenAI (via Together) | $0.0003750.037¢ | 2,666 | $1.13 |
| OpenAI | $0.0007000.07¢ | 1,428 | $2.10 |
| DeepSeek | $0.0007500.075¢ | 1,333 | $2.25 |
| Meta (via Together) | $0.0009250.092¢ | 1,081 | $2.77 |
| Mistral | $0.00100.1¢ | 1,000 | $3.00 |
| $0.00140.14¢ | 714 | $4.20 | |
| xAI | $0.00190.19¢ | 533 | $5.63 |
| $0.00220.22¢ | 444 | $6.75 | |
| DeepSeek | $0.00260.26¢ | 378 | $7.92 |
| Meta | $0.00270.27¢ | 363 | $8.25 |
| Anthropic | $0.00300.3¢ | 333 | $9.00 |
| xAI | $0.00400.4¢ | 250 | $12.00 |
| Alibaba (Qwen) | $0.00400.4¢ | 250 | $12.00 |
| Mistral | $0.00450.45¢ | 222 | $13.50 |
| OpenAI | $0.00600.6¢ | 166 | $18.00 |
| OpenAI | $0.00600.6¢ | 166 | $18.00 |
| Anthropic | $0.00600.6¢ | 166 | $18.00 |
| OpenAI | $0.00700.7¢ | 142 | $21.00 |
| Moonshot AI | $0.00900.9¢ | 111 | $27.00 |
| OpenAI | $0.0120 | 83 | $36.00 |
| Anthropic | $0.0120 | 83 | $36.00 |
| OpenAI | $0.0300 | 33 | $90.00 |
| Anthropic | $0.0300 | 33 | $90.00 |
Prices from official provider pricing pages, verified October 2026.
GPT-4o vs Gemini 3.1 Pro — Frequently Asked Questions
GPT-4o is 11% cheaper than Gemini 3.1 Pro. One typical prompt (500 input + 500 output tokens) costs $0.0063 on GPT-4o and $0.0070 on Gemini 3.1 Pro. GPT-4o charges $2.50/$10.00 per million tokens (input/output) vs Gemini 3.1 Pro's $2.00/$12.00.
It depends on your priorities. GPT-4o is more cost-effective at $6.25 per 1,000 prompts. Gemini 3.1 Pro may offer different capabilities or quality. GPT-4o has a 128K context window vs Gemini 3.1 Pro's 1M. Use the calculator above to compare at your actual volume.
Beyond price: GPT-4o accepts text, images and PDFs, writes up to 16,384 tokens per response, has a knowledge cutoff of October 2023 and has no reasoning mode. Gemini 3.1 Pro accepts text, images, video, audio and PDFs, writes up to 65,536 tokens per response, has a knowledge cutoff of January 2025 and always reasons before answering. GPT-4o has a 128K context window and Gemini 3.1 Pro 1M. See the specs table above for a side-by-side view.
At 10,000 requests per day, switching from Gemini 3.1 Pro to GPT-4o saves about $225.00/month — a 11% cut on every call. Savings scale linearly with volume.
At 100,000 daily requests, GPT-4o costs $18,750.00/month and Gemini 3.1 Pro costs $21,000.00/month — a difference of $2,250.00/month.