One agent session
1M input tokens and 100K output tokens, no caching.
- Input1M x $15 = $15.00
- Output0.1M x $120 = $12.00
$27.00per session
OpenAI - Closed weights
GPT-5 Pro pricing and specs
GPT-5 Pro is a closed-weights model from OpenAI that costs $15 per 1M input tokens and $120 per 1M output tokens on the first-party API, with a 400K-token context window.
Last verified from developers.openai.com. All sources
- Input / 1M
- $15
- Output / 1M
- $120
- Context
- 400K tokens
- Weights
- Closed
Pricing per 1M tokens
| Item | Price / 1M tokens |
|---|---|
| Input | $15 |
| Output | $120 |
| Batch inputBatch requests | $7.50 |
| Batch outputBatch requests | $60 |
Note: No cached-input discount. Max output is 272,000 tokens per the model page. Default snapshot gpt-5-pro-2025-10-06.
Specs
- Context window
- 400,000 tokens
- Max output
- 272,000 tokens
- Release date
- Provider
- OpenAI
- API model id
gpt-5-pro- Vercel AI Gateway id
openai/gpt-5-pro- Weights
- Closed weights
What GPT-5 Pro costs in practice
Worked from the standard list rates above, with the math shown so you can swap in your own token counts.
A chat app
10,000 requests a day at 2K input and 500 output tokens each.
- Input20M x $15 = $300.00
- Output5M x $120 = $600.00
$900.00per day
$27,000.00 per 30-day month
Compare with
| Model | Input / 1M | Output / 1M |
|---|---|---|
| GPT-5 Pro (this page) | $15 | $120 |
| o3-proOpenAI | $20 | $80 |
| GPT-5.6 CyberOpenAI | $12.50 | $75 |
| GPT-4OpenAI | $30 | $60 |
| GPT-5.5 ProOpenAI | $30 | $180 |
| o1OpenAI | $15 | $60 |
| GPT-6 AstraOpenAI | $10 | $50 |
Related reading
- Gemini 2.5 Pro and Gemini 3 Flash Deprecated in GitHub Copilot: What to Switch ToGemini 2.5 Pro and Gemini 3 Flash are deprecated in GitHub Copilot. What GitHub suggests instead, the October follow-up deprecations, and how to migrate.
- Gemini 3.5 Pro Developer Guide: 2M Context Window and Deep Think ModeGoogle's Gemini 3.5 Pro arrives with a 2-million-token context window and Deep Think reasoning mode. Here is how to access it, what it costs, and when the massive context actually helps.
- Codex CLI 0.163: Instant Steering Is Now the DefaultCodex CLI 0.163.0 makes mid-response steering the default and adds searchable /config and a leader key. What changed and what to check before upgrading.
- Tool Calling Under the Hood: Claude Messages vs OpenAI ResponsesHow tool calling works on the wire: JSON schema tools, parallel calls, tool_choice, strict mode and streaming deltas in Claude Messages vs OpenAI Responses.
- Codex 'gpt-5.5 Model Is Not Supported' Error: The FixCodex says gpt-5.5 is not supported with a ChatGPT account because OpenAI retired it from ChatGPT sign-in on October 14. The fix and what still works.
- Codex CLI Background Daemon: How to Turn It OffCodex CLI starts a persistent, self-updating background daemon since 0.157.0. What it does, why it hit Hacker News and the reported workaround to turn it off.
FAQ
How much does GPT-5 Pro cost per million tokens?
GPT-5 Pro costs $15 per 1M input tokens and $120 per 1M output tokens on OpenAI's first-party API, per developers.openai.com on October 17, 2026. Per 1M tokens, the batch rate is $7.50 input and $60 output.
What is GPT-5 Pro's context window?
GPT-5 Pro has a 400,000-token context window and returns up to 272,000 output tokens per response.
Are GPT-5 Pro's weights open?
No. GPT-5 Pro is a closed-weights model. You call it through OpenAI's API as gpt-5-pro or through Vercel AI Gateway as openai/gpt-5-pro.
When was GPT-5 Pro released?
OpenAI released GPT-5 Pro on October 6, 2025.
Sources
Last verified from developers.openai.com.
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