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o3

openai·openai/o3·GA·Closed·o series
Deliberate o-series reasoner for hard math, coding, and multi-step analysis

o3 by openai is offered by 22 providers on this page. Public prices are shown for 21 of them. Its official list price is $2.00 per 1M input tokens and $8.00 per 1M output tokens. The lowest paid channel is Poe at $1.80 / $7.20 per 1M, about 5.6× below the list price. That channel is a third-party gateway, so confirm its availability and rate limits before depending on it.

Artificial Analysis rates it 20.2 on the Intelligence Index. Against its lowest blended price of $3.15 per 1M, that is roughly 6 index points per dollar, which is the value ratio the leaderboards rank on. Median output speed is 139 tokens per second, with 7.9s to the first token.

The context window is 200,000 tokens at the reference host, but hosts report different limits, from 131,072 to 200,000, so the usable window depends on the provider you pick. It supports reasoning, tool use, and structured output. Accepted input modalities are Text, Image, and PDF. Providers report the capability flags inconsistently, so verify a specific feature against the host you plan to use. Its training knowledge cuts off at 2024-05.

Specs & pricing

Input / output per 1M tokens
Official price·OpenAI
$2.00 / $8.00
Blended $3.50 · Cache read $0.50
Lowest paid·PoeGateway
$1.80 / $7.20
Blended $3.15 · 5.6× spread
Context
200,000
Output limit
100,000
Knowledge cutoff
2024-05
Released / updated
2025-04-16 / 2025-04-16
Capabilities
✓ Reasoning✓ Tool use✓ Structured outputTemperature✓ Attachments
⚠ Providers report capability flags inconsistently
Modalities
TextImagePDF

Quality & performanceArtificial Analysis · Intelligence Index v4.3

Intelligence20.2
Value6
Coding—
Agentic—
Output speed139 tok/s
TTFT7.9 s
Value formulaIQ 20.2 ÷ min blended $3.150 = 6

Quality is independently evaluated by Artificial Analysis. Speed/latency are model-level medians.

Available at 22 providers21 with public prices

ProviderTierInputOutputCache readCache writeContextOutput limitStatus
PoeGateway$1.80$7.20$0.45—200,000100,000
NEAR AI CloudGateway$2.00$8.00$0.50—200,000100,000
Kilo GatewayGateway$2.00$8.00$0.50—200,000100,000
AbacusGateway$2.00$8.00$0.50—200,000100,000
302.AIGateway$2.00$8.00——200,000100,000
OpenRouterGateway$2.00$8.00$0.50—200,000100,000
AzureCloud$2.00$8.00$0.50—200,000100,000
Azure Cognitive ServicesCloud$2.00$8.00$0.50—200,000100,000
ImpossiblGateway$2.00$8.00$0.50—200,000100,000
Cloudflare AI GatewayCloud$2.00$8.00$0.50—200,000100,000
OpenAIOfficialFirst-party$2.00$8.00$0.50—200,000100,000

Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.

Reasoning control

effort = loweffort = mediumeffort = higheffort = noneToggle (on / off)

2 / 22 providers expose no reasoning control (reasoning_options: []).

Experimental modes4 items

ModeProviderInputOutputCache readCache write
fastVercel AI Gateway$3.50$14.00$0.88—
flexVercel AI Gateway$1.00$4.00$0.25—
fastOpenAI$3.50$14.00$0.88—
flexOpenAI$1.00$4.00$0.25—

Your usage cost

1Poe$558.00
2NEAR AI Cloud$620.00
3Kilo Gateway$620.00
4Abacus$620.00
5OpenRouter$620.00
6Azure$620.00
15OpenAI · Official$620.00
Switch to Poe to save $62.00/mo (10%). The gap is small, so staying on the official channel is fine.
Note: this is a gateway; verify availability and rate limits yourself.

Price historyone sample accumulated per data sync

Input listOutput listMin blended
$8.00$02026-08-052026-09-032026-08-05 · Input list $2.002026-08-06 · Input list $2.002026-08-07 · Input list $2.002026-08-08 · Input list $2.002026-08-09 · Input list $2.002026-08-10 · Input list $2.002026-08-11 · Input list $2.002026-08-12 · Input list $2.002026-08-13 · Input list $2.002026-09-03 · Input list $2.002026-08-05 · Output list $8.002026-08-06 · Output list $8.002026-08-07 · Output list $8.002026-08-08 · Output list $8.002026-08-09 · Output list $8.002026-08-10 · Output list $8.002026-08-11 · Output list $8.002026-08-12 · Output list $8.002026-08-13 · Output list $8.002026-09-03 · Output list $8.002026-08-05 · Min blended $3.152026-08-06 · Min blended $3.152026-08-07 · Min blended $3.152026-08-08 · Min blended $3.152026-08-09 · Min blended $3.152026-08-10 · Min blended $3.152026-08-11 · Min blended $3.152026-08-12 · Min blended $3.152026-08-13 · Min blended $3.502026-09-03 · Min blended $3.15

Benchmark1 items

NameConditionsScoreMetricSource
Aider Polyglot—81.3percent correctSource ↗

The same benchmark scores very differently across harness / dataset, so the qualifying conditions must be shown together.

Artificial Analysis evaluations11 items

GPQA Diamond82.7%
Humanity's Last Exam20.1%
MMLU-Pro85.3%
LiveCodeBench80.8%
Terminal-Bench Hard37.1%
AIME 202588.3%
AIME90.3%
MATH-50099.2%
τ²-Bench Telecom80.7%
AA-LCR74.7%
IFBench71.4%

Individual evaluations run by Artificial Analysis, on the same reasoning tier as the intelligence score above. Each benchmark has its own task set and harness, so rows are not comparable with one another. The Intelligence Index above draws on a different, newer set of evaluations.

Related models

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Data partly from models.dev (MIT) · OpenAI official docs ↗