Models/OpenAI/o3

o3

Name: o3 API access
Brand: OpenAI

OpenAI · Proprietary · Released Apr 16, 2025 · openai/o3

Compare Estimate cost

200K contextVisionToolsReasoningStructured outputPrompt caching

Available from 1 providerUSD / MTOK · VERIFIED 4 MINUTES AGO

EST. MONTHLY COSTclick a row for detail · click headers to sort

PROVIDER	INPUT	OUTPUT	CACHE	CONTEXT	QUANT	TTFT	TPS	UPTIME
OpenAI1ST PARTY	$2.00	$8.00	$0.50	200K	—	3.1s	208 tok/s	100.0%

TTFT/TPS: median (P50) over trailing 72h · chat10k profile (~10K in / 200 out) · measured via OpenRouter routing · methodology v1.1 · measured 44 hours ago

Pricing variants · USD / MTok in / out

STANDARD

$2.00 / $8.00

per MTok in / out

BATCH

$1.00 / $4.00

async batch

CACHE READ $0.50WEB SEARCH $0.01 / search

About

o3 is a well-rounded and powerful model across domains. It sets a new standard for math, science, coding, and visual reasoning tasks. It also excels at technical writing and instruction-following....

Specifications

Context window200,000

Max output100,000

Modalities inimage, text, file

Modalities outtext

LicenseProprietary

ReleasedApr 16, 2025

Knowledge cutoff2024-06-30

TokenizerGPT

GPT-5.6 Luna Pro$0.10 / $0.60 GPT-5.6 Luna$0.10 / $0.60 GPT-5.6 Terra Pro$1.00 / $6.00 GPT-5.6 Terra$1.00 / $6.00

Embed badge

[![o3](https://modelindex.ai/badge/openai/o3)](https://modelindex.ai/models/openai/o3)

Sources

OpenRouter API4 minutes ago

AGGREGATOR

LiteLLM dataset4 minutes ago

AGGREGATOR

ModelIndex benchmarks44 hours ago

MEASURED

Verified 4 minutes ago · list prices, not negotiated rates.