OpenAI · Released Aug 7, 2025GPT-5
Original GPT-5 workhorse for reasoning, coding, writing, and tool workflows.
- Capability
- 150.0ECI · #50 of 148
- Input
- $1.25per 1M tokens
- Output
- $10.00per 1M tokens
- Context
- 400K128K max output
What it costs
- Input
- $1.25per million tokens
- Output
- $10.00per million tokens
- Cached input
- $0.125per million tokens
- Blended (3:1)
- $3.44pricier than 78% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $7.50 |
| Team assistant25M input + 5M output tokens | $81.25 |
| Production app250M input + 50M output tokens | $812.50 |
Official OpenAI API price, as listed on models.dev.
Independent benchmarks
#50 of 148 scored models
Epoch AI pins this model’s score to anchor the scale, so it has no confidence range. The tick marks the median scored model.
Scores from Epoch AI, run independently of OpenAI.
The details
- Lab
- OpenAI
- Released
- Aug 7, 2025
- Knowledge cutoff
- Sep 30, 2024
- Context window
- 400,000 tokens
- Max output
- 128,000 tokens
- Inputs
- Text, Images
- Output
- Text
- Reasoning
- Adjustable effort minimal · low · medium · high
- Tool calling
- Yes
- Structured output
- Yes
- Weights
- Proprietary
- API model ID
gpt-5on OpenAI- Availability
- 24 API providerslisted on models.dev
What OpenAI claims
Published by the lab at launch. Settings vary, so compare these only with care.
More from OpenAI
About GPT-5
How much does GPT-5 cost?
GPT-5 costs $1.25 input / $10.00 output per million tokens (official OpenAI API price). Cached input is $0.125 per million tokens. At a 3:1 input-to-output mix that is $3.44 per million tokens, more expensive than 78% of the 360 priced models we track.
What is the context window of GPT-5?
GPT-5 accepts up to 400,000 tokens per request and can write up to 128,000 tokens in one response.
How good is GPT-5?
Epoch AI gives GPT-5 a Capabilities Index score of 150.0, a fixed reference point Epoch uses to anchor the scale, ranking it #50 of 148 models Epoch has scored. Epoch AI benchmark results: GPQA Diamond 86.2%, FrontierMath Tiers 1–3 55.4%, OTIS Mock AIME 2024–2025 91.4%, SWE-bench Verified 73.6%, SimpleQA Verified 50.1%.
Is GPT-5 open source?
No. GPT-5 is proprietary; you use it through OpenAI’s API or partner platforms.
What inputs does GPT-5 support?
GPT-5 accepts text and images and replies in text. It is a reasoning model with minimal, low, medium and high effort settings, supports tool calling and can return structured JSON output.
When was GPT-5 released?
OpenAI released GPT-5 on Aug 7, 2025. Its training data runs to Sep 30, 2024.
What are the best alternatives to GPT-5?
The closest current models from other labs on capability, price and release date are Gemini 2.5 Pro (Google, ECI 145.3, $1.25 / $10.00), Qwen3.6 Max Preview (Alibaba (Qwen), ECI 149.2, $1.30 / $7.80), GLM-5.1 (Z.ai (Zhipu), ECI 149.9, $1.40 / $4.40) and Claude Sonnet 4.5 (Anthropic, ECI 146.8, $3.00 / $15.00).