OpenAI

o3

Vérifié par l’équipe de recherche de GetInfoUsDernière révision : October 2026Politique éditoriale
Moteur de Raisonnement ProfondOfficial Source Verified ↗
56
Intelligence Index

o3 de OpenAI est un modèle d’IA conçu pour le raisonnement logique profond, les mathématiques formelles et l’analyse scientifique, offrant une fenêtre de contexte de 200K, une vitesse de 75 tokens/s, un indice d’intelligence de 56/100 et un tarif de $2/$8 par million de tokens.

Technical Specifications

Provider
OpenAI
Category
reasoning
Release Date
2025-04
Knowledge Cutoff
June 2024
Architecture
Reasoning transformer with adjustable thinking effort
Parameters
Confidential
Context Window
200K tokens
Max Output
100K tokens
Cached Input Price
$0.5 / 1M tokens
Batch API Discount
50% off async batch
Consumer Subscription
$20 / month
Reasoning Mode
Yes (Chain-of-Thought)
Reasoning Effort Control
Configurable (Low / Med / High)
Tool Calling
Yes
Structured Outputs
Yes
Open Weights
No (Proprietary Cloud)
Input Modalities
text, vision
Output Modalities
text
Official Documentation
Visit Official Docs ↗

Data Privacy, Licensing & Deployment Governance

API Data Training Policy
API payloads are excluded from model training by default
Model License & Commercial Rights
Proprietary Commercial API (OpenAI Terms)
Deployment & Cloud Availability
OpenAI Platform API, Microsoft Azure OpenAI Foundry
Output Ownership
Full commercial ownership of generated outputs

Official Provider Release Intelligence, API Quotas & Agentic Specs

Compare Multi-Models Side-by-Side →
Official API Model ID (SDK String)
o3
Supported SDK & API Protocol
OpenAI Responses API & Chat Completions v1
Lifecycle & Deprecation Status
Active GA (Guaranteed support through 2027+)
Production Rate Limits (RPM & TPM)
10,000 – 30,000 RPM (Tier 5 Enterprise) · 800,000 – 2,000,000 TPM
Long-Context Pricing Tier (>128K / >200K)
Flat rate ($2/1M in) across full 200K window
Prompt Cache Write & TTL Policy
Automatic prefix caching at $0.5/1M (no extra cache-write fee)
Computer Use & Browser GUI Agent
Supported (Screen coordinate grounding, browser & desktop GUI action loops)
MCP & Parallel Tool Calling
Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema
Web Search Grounding & Code Sandbox
Native Web Search tool + Hosted Code Interpreter & File Search RAG
Fine-Tuning & Distillation Support
Supervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT)
Multimodal Tokenization Billing
Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile)
Weights Precision & Quantization
Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster)
Minimum GPU VRAM Requirement
Zero Local VRAM Required (100% Serverless Cloud API)
Supported Inference Engines
Managed OpenAI Cloud API
System Card & Safety Framework
OpenAI Preparedness Framework Audited & System Card Published
Enterprise Compliance (SOC2 / HIPAA / ZDR)
SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier
Engineering & Pricing Workbench

o3 Cost, Context, Hardware & API Integration

500 / day
4,000 tok
1,000 tok
Conversation Depth (History Re-billing):1 Turn (Single-Shot)
50%
Estimated Monthly API Cost (30 Days)
$195.00$240.00
Monthly Savings: $45.00 (Caching/Batch)
Subscription ($20/mo) vs API

For single-user chat, a $20/mo subscription caps your bill below this API volume.

Break-even point: ~51 requests/day equals $20/month.

Same Monthly Workload Cost Across Popular Reference Models

o3 (Active)
$195.00
/ month
Gemini 2.5 Flash
$18.00
/ month
DeepSeek V3
$32.70
/ month
GPT-4o
$300.00
/ month
Claude 3.7 Sonnet
$405.00
/ month

Live Prompt Paste Tokenizer & Cost Counter

Paste real system instructions, JSON schemas, or code to measure BPE token counts across tokenizers.

Chars / Words
175 / 24
OpenAI o200k
~46 tok
Claude BPE
~49 tok
Llama / DeepSeek
~51 tok

Hybrid Prompt Routing Cascade Simulator

Route routine queries to a fast lightweight model ($0.15/1M) and escalate only complex reasoning turns to o3:

Cascaded Monthly Bill:$62.25/mo
Saves $132.75/mo (68% cost reduction) vs sending 100% of traffic to o3.

Benchmark Scores & 6-Axis Capability Radar

Benchmark Encyclopedia
Coding (79)Reasoning (88)Knowledge (87)Speed (50)Context (85)Cost Value (72)
o32026 Frontier Median
SWE-bench Verified
69.1%
GPQA Diamond
76.5%
MMLU-Pro
87%
HumanEval
92%
Humanity's Last Exam
12.9%
Terminal-Bench
42%
SciCode
42.5%
LiveCodeBench
70.5%
AIME
91.6%
Long-Context Reasoning
78.5%
Chatbot Arena Elo
1345pts

Strengths

  • Fenêtre de contexte de 200K et capacité de sortie maximale de 100K tokens (SWE-bench Verified 69.1% · GPQA Diamond 76.5%)
  • Débit rapide de 75 tokens/seconde avec une latence au premier token (TTFT) de 2800 ms
  • Tarification API optimisée ($2/$8 par million de tokens) avec prise en charge du cache de prompts et des schémas JSON stricts

Limitations & Trade-offs

  • Modèle cloud propriétaire ne permettant pas le téléchargement local des poids sur serveur isolé
  • Pour les charges à très fort volume, l’activation du cache de prompts et de l’API Batch est recommandée

Editorial Assessment

Alliant un indice d’intelligence de 56/100, un contexte de 200K et un débit de 75 tok/s, o3 s’impose comme une valeur sûre de la gamme OpenAI.

Best for: Conçu pour le raisonnement logique profond, les mathématiques formelles et l’analyse scientifique, l’intégration RAG et les pipelines de production évolutifs.

Frequently Asked Questions about o3

How much does the o3 API cost per 1M tokens?+

o3 by OpenAI is priced at $2 per 1M input tokens and $8 per 1M output tokens. With prompt caching enabled, cached input tokens cost $0.5 per 1M tokens, and asynchronous Batch API requests receive a 50% discount.

Should I use a $20/month subscription or the o3 pay-as-you-go API?+

A flat $20/month consumer subscription is predictable for daily interactive chat and manual coding. However, if you are building software, running automated workflows, or sending low-to-moderate volume with prompt caching enabled, the pay-as-you-go API is typically far more cost-effective and offers higher rate limits without manual UI caps.

How many words and pages fit in o3's context window?+

o3 features a 200K tokens context window, which equals approximately 150,000 English words or ~400 standard single-spaced pages in a single prompt. Its maximum output generation per turn is 100,000 tokens.

Can I run o3 locally on my own GPU (Open Weights)?+

No, o3 is a proprietary closed-weights model hosted by OpenAI. It cannot be downloaded for local GPU execution and must be accessed via OpenAI's official API or cloud platform.

Does OpenAI train on data sent to the o3 API, and is commercial use allowed?+

API payloads are excluded from model training by default. License tier: Proprietary Commercial API (OpenAI Terms). Full commercial ownership of generated outputs. Supported deployment channels include: OpenAI Platform API, Microsoft Azure OpenAI Foundry.

How does o3 perform on coding and reasoning benchmarks?+

o3 achieves a composite Intelligence Index of 56/100, scoring 69.1% on SWE-bench Verified, 76.5% on GPQA Diamond, 87% on MMLU-Pro, and 1345 pts on Chatbot Arena Elo.

What is o3 best used for?+

o3 is best suited for: Conçu pour le raisonnement logique profond, les mathématiques formelles et l’analyse scientifique, l’intégration RAG et les pipelines de production évolutifs.. Assessment: Alliant un indice d’intelligence de 56/100, un contexte de 200K et un débit de 75 tok/s, o3 s’impose comme une valeur sûre de la gamme OpenAI.

Les scores de benchmarks, tarifs par token et limites évoluent rapidement. Vérifiez toujours les spécifications actuelles sur la documentation officielle du fournisseur.

Sources: OpenAI official pricing & model documentation (verified October 2026)↗