OpenAI › o3 › Pricing

o3 pricing

API list price by OpenAI · checked Oct 23, 2026
Benchmarks and alternatives →
$2 / $8per 1M tokens in / out
$0.50cache read · −75%
#375on OpenRouter by tokens · 512M / week

Price sheetper 1M tokens

Input$2list
Output$8
Cache read$0.50−75% vs input
Context · max output200K · 100Ktokens

Where to buy1 provider · per 1M tokens

ProviderInputOutputContext
OpenAIlab$2$8200K

In OpenAI's line-upper 1M in / out

o4 Mini High$1.10 / $4.40−45%
GPT-3.5 Turbo 16k$3 / $4−7%
GPT-5.1 (2025-11-13)$1.25 / $10−2%
o3$2 / $8this model
GPT-6.1 Sol$2 / $10+14%
GPT-4o$2.50 / $10+25%
GPT-4o (2024-08-06)$2.50 / $10+25%
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Cheaper for the same workvs o3

Muse Spark 1.3 max-43%score ×2.4$1.60
Grok 4.7 xhigh-14%score ×2.3$3.74
MiMo v2.6 Pro thinkingOpen-84%score ×2.3$0.13
Qwen3.8 Max (0902) thinking-14%score ×2.2$5.41
DeepSeek V4.1 Flash 1017 maxOpen-85%score ×2.2$0.26

Pricing questions

How much does o3 cost?›

$2 per 1M input tokens and $8 per 1M output tokens. Cached input is $0.50.

Is o3 free to use?›

There is no free API tier.

How much does prompt caching save?›

Cache reads cost $0.50 per 1M, 75% below the input price.

Is o3 cheaper than o1?›

Yes: $2 / $8 against $15 / $60, 87% less per token.

What is a cheaper alternative to o3?›

Muse Spark 1.3 at max effort costs -43% per task with a score ×2.4 on Humanity's Last Exam.