GPT-5
by Impossibl · family gpt · listed Aug 2025RTV
Original GPT-5 workhorse for reasoning, coding, writing, and tool workflows
Current rates USD per 1M tokens
Input$1.25
Output$10.00
Cache read$0.125
Cache write—
Against the market
On the record
- Model id
openai/gpt-5- Context window
- 400K tokens
- Max output
- 128K tokens
- Input modalities
- text, image
- Output modalities
- text
- Reasoning
- yes
- Tool calls
- yes
- Open weights
- no
- Knowledge cutoff
- Sep 2024
- Released
- 2025-08-07
- Last updated
- 2025-08-07
- Provider docs
- impossibl.com/docs/models
Back of the envelope
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