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o3: price, performance and context

Proprietary o3 by OpenAI costs $2.00 per 1M input and $8.00 per 1M output tokens, handles up to 200K tokens in one request (≈ 600 pages of text) and scores 20.2 points on the AgentKernel performance index, rank 97 of 212.

Privacy: no zero-retention provider listed.

Updated Oct 09, 2026, 16:49 UTC · openai/o3

Open in the interactive comparison

Key facts

Licence
Proprietary: no public weights, only through a provider API
Input / 1M tokens
$2.00
Output / 1M tokens
$8.00
Context window
200K tokens
Max. output
100K tokens
Performance index
20.2 points · rank 97 of 212
Coding index
n/a
Agentic index
n/a
Cost at your usage
$4.00 / month
Knowledge cutoff
Jun 2024
In the catalog since
Apr 16, 2025
Capabilities
Reasoning, Vision, Tool Calling, Files

What do you get for $10.00?

Rules of thumb from the cost calculator, base rates without caching or taxes.

TaskCost per taskFor $10.00
Chat repliesA question with a short history, a detailed answer$0.0052,200
Email draftsBullet points in, a finished email out$0.0042,700
Document summariesRead 10 pages, write a one-page summary$0.011940
Code reviewsReview and comment on 500 lines of code$0.019530
Book analysesAnalyse a 300-page book in one go$0.21646

Cheaper with similar performance

ModelLicencePerformanceYour cost / month
Ling 3.1 FlashinclusionAIProprietary41.1$0.00
Ling 3.0 Flash VLinclusionAIOpen24.6$0.036
Ling 3.0 FlashinclusionAIOpen20.1$0.037

Stronger models

ModelLicencePerformanceYour cost / month
GPT-5.1-Codex-MiniOpenAIProprietary20.4$0.75
GPT-5 MiniOpenAIProprietary20.6$0.75
GPT-5.4 NanoOpenAIProprietary20.7$0.513

Open alternatives

ModelLicencePerformanceYour cost / month
MiMo-V2.6-ProXiaomiOpen46.3$0.653
GLM 5.3Z.aiOpen44.8$1.79
Kimi K3Moonshot AIOpen43.6$4.195