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openai API Pricing

openai offers 104 API models in the catalog. Combined input+output prices range from $0.108 (OpenAI: gpt-oss-20b) to $750 (OpenAI: o1-pro) per 1M tokens. Its most recent model is OpenAI: GPT-6.1 Sol Pro (batch) at $1 input / $5 output.

Model	Input /1M	Output /1M	Cached in /1M	Context
OpenAI: gpt-oss-20b	$0.018	$0.09	$0.009	131,072
OpenAI: gpt-oss-20b (batch)	$0.024	$0.112	—	131,072
OpenAI: gpt-oss-120b (batch)	$0.0296	$0.136	—	131,072
OpenAI: GPT-5 Nano (batch)	$0.025	$0.2	$0.0025	400,000
OpenAI: GPT-4.1 Nano (batch)	$0.05	$0.2	$0.0125	1,047,576
OpenAI: GPT-6 Luna Pro (batch)	$0.05	$0.25	$0.005	1,050,000
OpenAI: GPT-6 Luna (batch)	$0.05	$0.25	$0.005	1,050,000
OpenAI: gpt-oss-safeguard-20b	$0.075	$0.3	$0.0375	131,072
OpenAI: GPT-4o-mini (batch)	$0.075	$0.3	$0.0375	128,000
OpenAI: GPT-5 Nano	$0.05	$0.4	$0.005	400,000
OpenAI: GPT-4.1 Nano	$0.1	$0.4	$0.025	1,047,576
OpenAI: GPT-6 Luna Pro	$0.1	$0.5	$0.01	1,050,000
OpenAI: GPT-6 Luna	$0.1	$0.5	$0.01	1,050,000
OpenAI: GPT-5.6 Luna Pro (batch)	$0.1	$0.6	$0.01	1,050,000
OpenAI: GPT-5.6 Luna (batch)	$0.1	$0.6	$0.01	1,050,000
OpenAI: GPT-5.4 Nano (batch)	$0.1	$0.625	$0.01	400,000
OpenAI: gpt-oss-120b	$0.15	$0.6	$0.075	131,072
OpenAI: GPT-4o-mini	$0.15	$0.6	$0.075	128,000
OpenAI: GPT-4o-mini (2024-07-18)	$0.15	$0.6	$0.075	128,000
OpenAI: GPT-4.1 Mini (batch)	$0.2	$0.8	$0.05	1,047,576
OpenAI: GPT-3.5 Turbo (batch)	$0.25	$0.75	—	16,385
OpenAI: GPT-5 Mini (batch)	$0.125	$1	$0.0125	400,000
OpenAI: GPT-5.6 Luna Pro	$0.2	$1.2	$0.02	1,050,000
OpenAI: GPT-5.6 Luna	$0.2	$1.2	$0.02	1,050,000
OpenAI: GPT-5.4 Nano	$0.2	$1.25	$0.02	400,000
OpenAI: GPT-4.1 Mini	$0.4	$1.6	$0.1	1,047,576
OpenAI: GPT-3.5 Turbo	$0.5	$1.5	—	16,385
OpenAI: GPT-5.1-Codex-Mini	$0.25	$2	$0.03	400,000
OpenAI: GPT-5 Mini	$0.25	$2	$0.025	400,000
OpenAI: GPT-5.4 Mini (batch)	$0.375	$2.25	$0.0375	400,000
OpenAI: o4 Mini (batch)	$0.55	$2.2	$0.1375	200,000
OpenAI: o3 Mini (batch)	$0.55	$2.2	$0.275	200,000
OpenAI: GPT Audio Mini	$0.6	$2.4	—	128,000
OpenAI: GPT-3.5 Turbo (older v0613)	$1	$2	—	4,095
OpenAI: GPT-3.5 Turbo Instruct	$1.5	$2	—	4,095
OpenAI: GPT-5 Image Mini	$2.5	$2	$0.25	400,000
OpenAI: o3 (batch)	$1	$4	$0.25	200,000
OpenAI: GPT-4.1 (batch)	$1	$4	$0.25	1,047,576
OpenAI: GPT-5.4 Mini	$0.75	$4.5	$0.075	400,000
OpenAI: o4 Mini High	$1.1	$4.4	$0.275	200,000
OpenAI: o4 Mini	$1.1	$4.4	$0.275	200,000
OpenAI: o3 Mini High	$1.1	$4.4	$0.55	200,000
OpenAI: o3 Mini	$1.1	$4.4	$0.55	200,000
OpenAI: GPT-5.1 (batch)	$0.625	$5	$0.0625	400,000
OpenAI: GPT-5 (batch)	$0.625	$5	$0.0625	400,000
OpenAI: GPT-6.1 Sol Pro (batch)	$1	$5	$0.05	1,050,000
OpenAI: GPT-6.1 Sol (batch)	$1	$5	$0.05	1,050,000
OpenAI: GPT-6 Sol Pro (batch)	$1	$5	$0.1	1,050,000
OpenAI: GPT-6 Sol (batch)	$1	$5	$0.1	1,050,000
OpenAI: GPT-4o (batch)	$1.25	$5	$0.625	128,000
OpenAI: GPT-5.6 Terra Pro (batch)	$1	$6	$0.1	1,050,000
OpenAI: GPT-5.6 Terra (batch)	$1	$6	$0.1	1,050,000
OpenAI: GPT-3.5 Turbo 16k	$3	$4	—	16,385
OpenAI: GPT-5.2 (batch)	$0.875	$7	$0.0875	400,000
OpenAI: GPT-5.4 (batch)	$1.25	$7.5	$0.125	1,050,000
OpenAI: o3	$2	$8	$0.5	200,000
OpenAI: GPT-4.1	$2	$8	$0.5	1,047,576
OpenAI: GPT-5.1-Codex-Max	$1.25	$10	$0.125	400,000
OpenAI: GPT-5.1	$1.25	$10	$0.125	400,000
OpenAI: GPT-5.1-Codex	$1.25	$10	$0.13	400,000
OpenAI: GPT-5	$1.25	$10	$0.125	400,000
OpenAI: GPT-6.1 Sol Pro	$2	$10	$0.1	1,050,000
OpenAI: GPT-6.1 Sol	$2	$10	$0.1	1,050,000
OpenAI: GPT-6 Sol Pro	$2	$10	$0.2	1,050,000
OpenAI: GPT-6 Sol	$2	$10	$0.2	1,050,000
OpenAI: GPT-5.6 Sol Pro (batch)	$2	$10	$0.2	1,050,000
OpenAI: GPT-5.6 Sol (batch)	$2	$10	$0.2	1,050,000
OpenAI: GPT Audio	$2.5	$10	—	128,000
OpenAI: GPT-4o (2024-11-20)	$2.5	$10	$1.25	128,000
OpenAI: GPT-4o (2024-08-06)	$2.5	$10	$1.25	128,000
OpenAI: GPT-4o	$2.5	$10	$1.25	128,000
OpenAI: GPT-5.6 Terra Pro	$2	$12	$0.2	1,050,000
OpenAI: GPT-5.6 Terra	$2	$12	$0.2	1,050,000
OpenAI: GPT-5.3-Codex	$1.75	$14	$0.175	400,000
OpenAI: GPT-5.2-Codex	$1.75	$14	$0.175	400,000
OpenAI: GPT-5.2 Chat	$1.75	$14	$0.175	128,000
OpenAI: GPT-5.2	$1.75	$14	$0.175	400,000
OpenAI: GPT-5.5 (batch)	$2.5	$15	$0.25	1,050,000
OpenAI: GPT-5.4	$2.5	$15	$0.25	1,050,000
OpenAI: GPT-5 Image	$10	$10	$1.25	400,000
OpenAI: GPT-4o (2024-05-13)	$5	$15	—	128,000
OpenAI: GPT-4 Turbo (batch)	$5	$15	—	128,000
OpenAI: GPT-5.4 Image 2	$8	$15	$2	272,000
OpenAI: GPT-5.6 Sol Pro	$4	$20	$0.4	1,050,000
OpenAI: GPT-5.6 Sol	$4	$20	$0.4	1,050,000
OpenAI: GPT-6 Astra (batch)	$5	$25	$0.5	1,050,000
OpenAI: GPT-6 Astra Pro (batch)	$5	$25	$0.5	1,050,000
OpenAI: GPT Chat Latest	$5	$30	$0.5	400,000
OpenAI: GPT-5.5	$5	$30	$0.5	1,050,000
OpenAI: GPT-4 Turbo	$10	$30	—	128,000
OpenAI: GPT-6 Astra	$10	$50	$1	1,050,000
OpenAI: GPT-6 Astra Pro	$10	$50	$1	1,050,000
OpenAI: GPT-5 Pro (batch)	$7.5	$60	—	400,000
OpenAI: o1	$15	$60	$7.5	200,000
OpenAI: GPT-4	$30	$60	—	8,191
OpenAI: GPT-5.2 Pro (batch)	$10.5	$84	—	400,000
OpenAI: o3 Pro	$20	$80	—	200,000
OpenAI: GPT-5.5 Pro (batch)	$15	$90	—	1,050,000
OpenAI: GPT-5.4 Pro (batch)	$15	$90	—	1,050,000
OpenAI: GPT-5 Pro	$15	$120	—	400,000
OpenAI: GPT-5.2 Pro	$21	$168	—	400,000
OpenAI: GPT-5.5 Pro	$30	$180	—	1,050,000
OpenAI: GPT-5.4 Pro	$30	$180	—	1,050,000
OpenAI: o1-pro	$150	$600	—	200,000

Frequently asked questions

What is the cheapest openai model?

The cheapest openai model by combined price is OpenAI: gpt-oss-20b at $0.018 input and $0.09 output per 1M tokens.

How many models does openai offer via API?

openai lists 104 models in the OpenRouter catalog as of October 21, 2026.

Price snapshot October 21, 2026, refreshed daily. Official openai pricing page ↗