GPT 5 Chat API pricing
Published on-demand rates for OpenAI's gpt-5-chat, captured 2026-08-10 from public pricing data and committed to our archive. Context window 128k tokens; first observed in our archive 2025-08-11.
| Meter | USD per 1M tokens |
|---|---|
| Input | $1.25 |
| Output | $10.00 |
| Cached input | $0.125 |
Standard on-demand rates. Excludes batch endpoints and negotiated pricing; confirm on OpenAI's pricing page before committing.
What it costs on a real workload
The four frozen profiles the LLMPrice indices price, per 1M tokens processed, at the rates above. Where no cache-read rate is published, the whole input bills at the standard rate.
| Profile | In / out mix | Cached share | Cost |
|---|---|---|---|
| Retrieval | 800k / 200k | 70% | $2.37 |
| Chat | 500k / 500k | 30% | $5.46 |
| Content | 200k / 800k | 20% | $8.21 |
| Agent | 900k / 100k | 85% | $1.26 |
Profile definitions are frozen and published on the methodology page. Compare every model on these profiles →
Observed rate history
No repricing observed since this model entered our archive on 2025-08-11. When a rate moves, the change appears here and on the sitewide ticker.
Priced near this one
The models closest to GPT 5 Chat on a retrieval workload, cheaper and more expensive alike. We publish no quality score, so this is what they cost and nothing more.
| Model | Provider | Input | Output | vs GPT 5 Chat |
|---|---|---|---|---|
| Gemini 2.5 Pro | $1.25 | $10.00 | about the same | |
| Gemini 3.5 Flash | $1.50 | $9.00 | 5% less | |
| Claude Sonnet 5 | Anthropic | $2.00 | $10.00 | 9% more |
| Magistral Medium 1.2 | Mistral | $2.00 | $5.00 | 10% more |
Compared on the retrieval profile: 800k input, 200k output, 70% of input cached where the model offers a cache rate.
No affiliate or referral arrangements: the console link carries no parameters and nothing on this page is paid placement. GPT 5 Chat is a trademark of its owner; LLMPrice.io is independent and unaffiliated.