OpenAI Models API Cost Calculator & Comparison

Every OpenAI model, side by side — current API rates, context window, benchmarks, and a live calculator that ranks them at your exact workload. 55 active models, 55 with public pricing. Prices refreshed daily.

Models tracked

55

Active

55

With public pricing

55

Cheapest input

$0.00/1M

Calculate your OpenAI API cost at your workload.

Set your workload — every priced model ranks in real time.

Adjust the workload

Every model below updates in real time.

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Ranked by your monthly bill

No models with public pricing available to compare right now.

Pricing at a glance

Blended $/1M tokens across the lineup.

Blended price uses a 3-to-1 input/output ratio. Green bar = cheapest.

Quick picks

Best OpenAI model for your use case.

As of April 2026, OpenAI offers 55 active models via API, ranging from $0/1M to $150.00/1M input tokens. The most context-rich model handles up to 1M tokens. Models support vision, deep reasoning, tool use. All prices are USD per 1 million tokens.

Lowest cost

gpt-oss-120b

$0/1M input

Largest context

GPT-5.4

1.1M tokens

Deep reasoning

GPT-5.4 Mini

Reasoning mode

Vision / multimodal

GPT-5.4 Nano

Image input

Tool use / agents

GPT-5.4 Pro

Function calling

Quality vs price

OpenAI benchmarks at a glance.

Each point is one model — X is blended $/1M tokens, Y is the average of available quality benchmarks. Larger bubbles mean larger context windows.

Per-model benchmark scores

ModelAvgScores
GPT-5.2-Codex89.9
GPQA Diamond89.9
GPT-5.1-Codex85.6
MMLU86GPQA Diamond86HumanEval84.9
o3 Pro84.5
GPQA Diamond84.5
GPT-5.1-Codex-Mini82.3
MMLU82GPQA Diamond81.3HumanEval83.6
GPT-4o-mini (2024-07-18)82.0
MMLU82
GPT-5 Codex81.4
MMLU86.5GPQA Diamond83.7SWE-Bench Verified74
o4 Mini High77.6
MMLU83.2GPQA Diamond81.4SWE-Bench Verified68.1
o3 Mini High76.7
MMLU79.1GPQA Diamond77LiveCodeBench74
GPT-4.1 Mini76.2
MMLU78.1GPQA Diamond66.4IFEval84.1
GPT-5.3-Codex73.4
GPQA Diamond91.5AA Intelligence Index54SWE-Bench Verified74.8
GPT-3.5 Turbo 16k70.0
MMLU70
GPT-5.2 Pro69.7
MMLU87.4GPQA Diamond90.3FrontierMath Tier-431.3
GPT-4.1 Nano65.2
MMLU80.1GPQA Diamond50.3
GPT-463.0
MMLU86.4HumanEval67GPQA Diamond35.7
GPT-4 Turbo Preview61.1
MMLU86.5GPQA Diamond35.7
GPT-5.4 Pro58.8
GPQA Diamond94.6FrontierMath Tier-437.5Humanity's Last Exam44.3
o158.7
MMLU84.1GPQA Diamond74.7LiveCodeBench67.9Humanity's Last Exam8.0
GPT-5.455.0
GPQA Diamond74.8SWE-Bench Verified80AA Intelligence Index57FrontierMath Tier-427.1Humanity's Last Exam36.2
GPT-553.9
MMLU80.6GPQA Diamond85SWE-Bench Verified74.9AA Intelligence Index45FrontierMath Tier-412.5Humanity's Last Exam25.3
GPT-5 Chat52.4
MMLU82GPQA Diamond68.6SWE-Bench Verified73.5FrontierMath Tier-412.5Humanity's Last Exam25.3
o4 Mini51.3
MMLU83.2GPQA Diamond78.4SWE-Bench Verified68.1AIME 202492.7FrontierMath Tier-42.1SciPredict16.2Humanity's Last Exam18.1
GPT-4 Turbo50.3
MMLU86.5GPQA Diamond35.7HumanEval67SWE-Bench Verified12
o3 Mini49.9
MMLU79.1GPQA Diamond74.8LiveCodeBench71.7FrontierMath Tier-44.2SciPredict19.8
GPT-5.249.2
MMLU81.4GPQA Diamond71.2AA Intelligence Index51SWE-Bench Verified73.8FrontierMath Tier-418.8SciPredict20.6Humanity's Last Exam27.8
GPT-4.149.1
MMLU80.6GPQA Diamond66.6SWE-Bench Verified54.6IFEval87.4FrontierMath Tier-40.0%Humanity's Last Exam5.4
GPT-5 Mini49.1
MMLU82.8GPQA Diamond80.3AA Intelligence Index41SWE-Bench Verified64.7FrontierMath Tier-46.3Humanity's Last Exam19.4
GPT-3.5 Turbo (older v0613)49.0
MMLU70GPQA Diamond28.0
GPT-5.148.0
MMLU80.1GPQA Diamond64.3SWE-Bench Verified68.0FrontierMath Tier-44.2Humanity's Last Exam23.7
GPT-5.2 Chat46.5
SWE-Bench Verified73.8FrontierMath Tier-418.8GPQA Diamond91.4SciPredict20.6Humanity's Last Exam27.8
o346.2
MMLU85.3GPQA Diamond82.7SWE-Bench Verified69.1FrontierMath Tier-42.1SciPredict17.9Humanity's Last Exam20.3
GPT-5.1 Chat45.2
SWE-Bench Verified68.0FrontierMath Tier-44.2GPQA Diamond85.0Humanity's Last Exam23.7
GPT-4o (2024-11-20)42.6
MMLU88.7SWE-Bench Verified31.0GPQA Diamond47.9Humanity's Last Exam2.7
gpt-oss-120b37.0
AA Intelligence Index37
gpt-oss-120b37.0
AA Intelligence Index37
GPT-4 Turbo (older v1106)35.7
GPQA Diamond35.7
GPT-5 Nano32.8
MMLU55.6GPQA Diamond42.8FrontierMath Tier-40.0%
GPT-5 Pro31.6
Humanity's Last Exam31.6
GPT-5.4 Mini31.3
GPQA Diamond60.6FrontierMath Tier-42.1
GPT-5.4 Nano31.0
GPQA Diamond55.8FrontierMath Tier-46.3
GPT-3.5 Turbo Instruct28.0
GPQA Diamond28.0
gpt-oss-20b22.0
AA Intelligence Index22
gpt-oss-20b22.0
AA Intelligence Index22
o1-pro8.1
Humanity's Last Exam8.1

Open weights

Open Models from OpenAI

OpenAI ships 5 open-source or open-weights models you can self-host or fine-tune. Each links to its Hugging Face card.

Every model

Every OpenAI model — pricing, context & capabilities.

ModelContextInput /1MOutput /1M
GPT-5.4 Mini400K$0.75$4.50
GPT-5.4 Nano400K$0.2$1.25
GPT-5.41.1M$2.50$15.00
GPT-5.4 Pro1.1M$30.00$180.00
GPT-5.3 Chat128K$1.75$14.00
GPT-5.3-Codex400K$1.75$14.00
GPT-5.2-Codex400K$1.75$14.00
GPT-5.2400K$1.75$14.00
GPT-5.2 Chat128K$1.75$14.00
GPT-5.2 Pro400K$21.00$168.00
GPT-5.1-Codex-Max400K$1.25$10.00
GPT-5.1400K$1.25$10.00
GPT-5.1 Chat128K$1.25$10.00
GPT-5.1-Codex400K$1.25$10.00
GPT-5.1-Codex-Mini400K$0.25$2.00
GPT Audio128K$2.50$10.00
GPT Audio Mini128K$0.6$2.40
gpt-oss-safeguard-20b131K$0.075$0.3
GPT-5 Image400K$10.00$10.00
GPT-5 Image Mini400K$2.50$2.00
GPT-5 Pro400K$15.00$120.00
GPT-5 Codex400K$1.25$10.00
GPT-5400K$1.25$10.00
GPT-5 Chat128K$1.25$10.00
GPT-5 Mini400K$0.25$2.00
GPT-5 Nano400K$0.05$0.4
gpt-oss-120b131K$0.039$0.19
gpt-oss-120b131K$0.0$0.0
gpt-oss-20b131K$0.03$0.14
gpt-oss-20b131K$0.0$0.0
o3 Deep Research200K$10.00$40.00
o4 Mini Deep Research200K$2.00$8.00
o3 Pro200K$20.00$80.00
o3200K$2.00$8.00
o4 Mini200K$1.10$4.40
o4 Mini High200K$1.10$4.40
GPT-4.11.0M$2.00$8.00
GPT-4.1 Mini1.0M$0.4$1.60
GPT-4.1 Nano1.0M$0.1$0.4
GPT-4o Search Preview128K$2.50$10.00
GPT-4o-mini Search Preview128K$0.15$0.6
o1-pro200K$150.00$600.00
o3 Mini200K$1.10$4.40
o3 Mini High200K$1.10$4.40
o1200K$15.00$60.00
GPT-4o (2024-11-20)128K$2.50$10.00
GPT-4o Audio128K$2.50$10.00
GPT-4o-mini (2024-07-18)128K$0.15$0.6
GPT-4 Turbo128K$10.00$30.00
GPT-4 Turbo Preview128K$10.00$30.00
GPT-4 Turbo (older v1106)128K$10.00$30.00
GPT-3.5 Turbo Instruct4K$1.50$2.00
GPT-3.5 Turbo (older v0613)4K$1.00$2.00
GPT-3.5 Turbo 16k16K$3.00$4.00
GPT-48K$30.00$60.00

FAQ

Domande frequenti

Pricing patterns, best-known use cases, and how this provider stacks up.

Get instant answers from our AI agent

OpenAI API pricing ranges from $0 to $150.00 per 1M input tokens. Output tokens cost more than input on every model. Prices are per 1 million tokens (1M ≈ 750,000 words). Use the calculator above to estimate your monthly spend at your actual workload.
gpt-oss-120b is the lowest-priced OpenAI model with public pricing at $0/1M input tokens. It suits high-volume tasks where cost matters most — classification, extraction, summarization, and similar workloads that don't need frontier reasoning.
o1-pro is OpenAI's highest-tier model at $150.00/1M input. It delivers the most sophisticated reasoning, instruction-following, and nuance. For workloads that don't require frontier performance, a mid-tier model typically cuts inference costs substantially.
GPT-5.4 Mini, GPT-5.4 Nano, GPT-5.4 and 31 more support deep reasoning mode, which improves performance on multi-step coding, debugging, and code review. For simpler autocomplete or snippet generation, a faster, cheaper model often delivers acceptable quality at a fraction of the cost.
GPT-5.4 Mini, GPT-5.4 Nano, GPT-5.4 and 51 more support function calling (tool use), required for agentic workflows. Agents need a model that reliably follows structured output schemas — test with your specific tool definitions before committing to production volumes.
Yes — GPT-5.4 Mini, GPT-5.4 Nano, GPT-5.4, GPT-5.4 Pro and 40 more accept image input alongside text. You can pass screenshots, photos, charts, and documents for analysis. Vision adds no separate line-item on most OpenAI models — you're billed for the token equivalent of the image.
Yes — OpenAI supports prompt caching (discounts for repeated context) and batch processing (accept a delay, cut costs ~50%). These rates appear in the table above under "Cached /1M" and "Batch /1M." Caching pays off quickly if your prompts share a long system prompt or document prefix across many calls.
OpenAI has historically adjusted prices when launching new model generations, often cutting rates to stay competitive. Buzzi.ai snapshots pricing daily — you can subscribe to price-drop alerts on any OpenAI model using the "Alert me" button on its detail page.
Use the main comparison wizard to run the same calculator across OpenAI, Anthropic, Google, Meta, Mistral, and 20+ other providers. Set your exact workload and get a ranked cost chart in under a minute.
GPT-5.4 Mini, GPT-5.4 Nano, GPT-5.4, GPT-5.4 Pro and 30 more offer an extended thinking or reasoning mode. The model spends extra compute "thinking" before answering — slower and more expensive, but meaningfully better on complex, multi-step problems. Standard mode is faster and cheaper for routine tasks.

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