OpenAI · current

GPT-5.3 Chat (latest)

GPT-5.3 Chat (latest) is attributed to OpenAI in the catalog. It accepts text and image input and produces text output. Reported capabilities include tool calling and structured output.

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Report an error Model and price history

Modalities

Hosted provider token rates

$1.75 / $14

USD per 1M input / output tokens · 302.AI

Context

128K

Released

2026-03-03

Knowledge cutoff

Aug 31, 2025

No recent lab-operated provider rate is available. Showing the third-party host with the lowest input rate + ¼ output rate. This is one offering, not an average; other providers, modalities, tiers, and fees may differ.

Where to use it

6 observed offerings · token prices in USD per million where available

Estimate your workload cost

Merge Gateway

openai/gpt-5.3-chat-latest

current

Input

$1.75

Output

$14

Cache

$0.175

Context

128K

Max output

16K

Reasoning: No
Tool calling: Yes
Structured output: Yes
Temperature: Yes

Recent price

Opper

gpt-5.3-chat-latest

deprecated

Input

$1.75

Output

$14

Cache

$0.175

Context

128K

Max output

16K

Reasoning: No
Tool calling: Yes
Structured output: Yes
Temperature: Yes

Historical price

OpenAI

gpt-5.3-chat-latest

deprecated

Input

$1.75

Output

$14

Cache

$0.175

Context

128K

Max output

16K

Reasoning: No
Tool calling: Yes
Structured output: Yes
Temperature: Yes

Historical price

302.AI

gpt-5.3-chat-latest

current

Input

$1.75

Output

$14

Cache

—

Context

128K

Max output

16K

Reasoning: No
Tool calling: Yes
Structured output: Yes
Temperature: Yes

Recent price

Abacus

gpt-5.3-chat-latest

deprecated

Input

$1.75

Output

$14

Cache

—

Context

400K

Max output

128K

Reasoning: No
Tool calling: Yes
Structured output: Unknown
Temperature: Yes

Not a current offering

Opper

openai/gpt-5.3-chat-latest

current

Input

$1.75

Output

$14

Cache

$0.175

Context

128K

Max output

16K

Reasoning: No
Tool calling: Yes
Structured output: Yes
Temperature: Unknown

Historical price

Limits and capabilities reflect each provider’s listed offering. Unknown means support was not reported.

Provider / API ID	Status	Context	Max output	Input	Output	Cache read	Reasoning	Tools	Structured	Temperature
Merge Gateway openai/gpt-5.3-chat-latest	currentRecent price	128K	16K	$1.75	$14	$0.175	No	Yes	Yes	Yes
Opper gpt-5.3-chat-latest	deprecatedHistorical price	128K	16K	$1.75	$14	$0.175	No	Yes	Yes	Yes
OpenAI gpt-5.3-chat-latest	deprecatedHistorical price	128K	16K	$1.75	$14	$0.175	No	Yes	Yes	Yes
302.AI gpt-5.3-chat-latest	currentRecent price	128K	16K	$1.75	$14	—	No	Yes	Yes	Yes
Abacus gpt-5.3-chat-latest	deprecatedNot a current offering	400K	128K	$1.75	$14	—	No	Yes	Unknown	Yes
Opper openai/gpt-5.3-chat-latest	currentHistorical price	128K	16K	$1.75	$14	$0.175	No	Yes	Yes	Unknown

Capabilities and limits

Input: text, image
Output: text
Max output: 16K
Weights: Closed (source-reported)
Release: 2026-03-03
Knowledge cutoff: Aug 31, 2025
Family: gpt

Tool calling · Structured output · Vision

Provider-specific limits and support can differ.

Plan a model evaluation

Evaluate quality and latency on examples from your intended use before choosing a model.

Explore available evidence

Models to compare

Candidates match reported specifications; they are not tested replacements.

GPT-4oOpenAI · 128K contextCompare →GPT-4o (2024-08-06)OpenAI · 128K contextCompare →GPT-4o (2024-11-20)OpenAI · 128K contextCompare →

Model and price history

Latest recorded change: source refresh · 2026-10-20

Model changes (1)

source refresh · 2026-10-20

{
  "before": {
    "status": "deprecated"
  },
  "after": {
    "status": "current"
  }
}

Price history (138 observations)

Date	Provider	Input / output
2026-11-02	Abacus	$1.75 / $14
2026-11-02	Merge Gateway	$1.75 / $14
2026-11-02	302.AI	$1.75 / $14
2026-11-01	Merge Gateway	$1.75 / $14
2026-11-01	Abacus	$1.75 / $14
2026-11-01	302.AI	$1.75 / $14
2026-10-31	Abacus	$1.75 / $14
2026-10-31	Merge Gateway	$1.75 / $14
2026-10-31	302.AI	$1.75 / $14
2026-10-30	Merge Gateway	$1.75 / $14
2026-10-30	Abacus	$1.75 / $14
2026-10-30	302.AI	$1.75 / $14
2026-10-29	302.AI	$1.75 / $14
2026-10-29	Abacus	$1.75 / $14
2026-10-29	Merge Gateway	$1.75 / $14
2026-10-28	302.AI	$1.75 / $14
2026-10-28	Merge Gateway	$1.75 / $14
2026-10-28	Abacus	$1.75 / $14
2026-10-27	Merge Gateway	$1.75 / $14
2026-10-27	Abacus	$1.75 / $14
2026-10-27	302.AI	$1.75 / $14
2026-10-27	Merge Gateway	$1.75 / $14
2026-10-27	302.AI	$1.75 / $14
2026-10-27	Abacus	$1.75 / $14
2026-10-27	Merge Gateway	$1.75 / $14
2026-10-27	302.AI	$1.75 / $14
2026-10-27	Abacus	$1.75 / $14
2026-10-27	Abacus	$1.75 / $14
2026-10-27	302.AI	$1.75 / $14
2026-10-27	Merge Gateway	$1.75 / $14
2026-10-26	Merge Gateway	$1.75 / $14
2026-10-26	Abacus	$1.75 / $14
2026-10-26	302.AI	$1.75 / $14
2026-10-25	Merge Gateway	$1.75 / $14
2026-10-25	302.AI	$1.75 / $14
2026-10-25	Abacus	$1.75 / $14
2026-10-24	302.AI	$1.75 / $14
2026-10-24	Merge Gateway	$1.75 / $14
2026-10-24	Abacus	$1.75 / $14
2026-10-24	302.AI	$1.75 / $14
2026-10-24	Abacus	$1.75 / $14
2026-10-24	Merge Gateway	$1.75 / $14
2026-10-24	Merge Gateway	$1.75 / $14
2026-10-24	302.AI	$1.75 / $14
2026-10-24	Abacus	$1.75 / $14
2026-10-23	Merge Gateway	$1.75 / $14
2026-10-23	Abacus	$1.75 / $14
2026-10-23	302.AI	$1.75 / $14
2026-10-23	Abacus	$1.75 / $14
2026-10-23	302.AI	$1.75 / $14
2026-10-23	Merge Gateway	$1.75 / $14
2026-10-23	302.AI	$1.75 / $14
2026-10-23	Abacus	$1.75 / $14
2026-10-23	Merge Gateway	$1.75 / $14
2026-10-23	302.AI	$1.75 / $14
2026-10-23	Merge Gateway	$1.75 / $14
2026-10-23	Abacus	$1.75 / $14
2026-10-23	Merge Gateway	$1.75 / $14
2026-10-23	302.AI	$1.75 / $14
2026-10-23	Abacus	$1.75 / $14
2026-10-22	302.AI	$1.75 / $14
2026-10-22	Merge Gateway	$1.75 / $14
2026-10-22	Abacus	$1.75 / $14
2026-10-22	Opper	$1.75 / $14
2026-10-21	Opper	$1.75 / $14
2026-10-21	Merge Gateway	$1.75 / $14
2026-10-21	302.AI	$1.75 / $14
2026-10-20	Opper	$1.75 / $14
2026-10-20	Merge Gateway	$1.75 / $14
2026-10-20	302.AI	$1.75 / $14
2026-10-19	302.AI	$1.75 / $14
2026-10-19	OpenAI	$1.75 / $14
2026-10-19	Opper	$1.75 / $14
2026-10-19	Merge Gateway	$1.75 / $14
2026-10-18	302.AI	$1.75 / $14
2026-10-18	Opper	$1.75 / $14
2026-10-18	Merge Gateway	$1.75 / $14
2026-10-18	OpenAI	$1.75 / $14
2026-10-17	Merge Gateway	$1.75 / $14
2026-10-17	Opper	$1.75 / $14
2026-10-17	302.AI	$1.75 / $14
2026-10-17	OpenAI	$1.75 / $14
2026-10-12	OpenAI	$1.75 / $14
2026-10-12	Merge Gateway	$1.75 / $14
2026-10-12	Opper	$1.75 / $14
2026-10-12	302.AI	$1.75 / $14
2026-10-12	Merge Gateway	$1.75 / $14
2026-10-12	302.AI	$1.75 / $14
2026-10-12	OpenAI	$1.75 / $14
2026-10-12	Opper	$1.75 / $14
2026-10-11	302.AI	$1.75 / $14
2026-10-11	Merge Gateway	$1.75 / $14
2026-10-11	OpenAI	$1.75 / $14
2026-10-11	Opper	$1.75 / $14
2026-10-10	Merge Gateway	$1.75 / $14
2026-10-10	OpenAI	$1.75 / $14
2026-10-10	302.AI	$1.75 / $14
2026-10-10	Opper	$1.75 / $14
2026-10-09	Merge Gateway	$1.75 / $14
2026-10-09	Opper	$1.75 / $14
2026-10-09	OpenAI	$1.75 / $14
2026-10-09	302.AI	$1.75 / $14
2026-10-09	Merge Gateway	$1.75 / $14
2026-10-09	OpenAI	$1.75 / $14
2026-10-09	302.AI	$1.75 / $14
2026-10-09	Opper	$1.75 / $14
2026-10-08	302.AI	$1.75 / $14
2026-10-08	Opper	$1.75 / $14
2026-10-08	OpenAI	$1.75 / $14
2026-10-08	Merge Gateway	$1.75 / $14
2026-10-07	Opper	$1.75 / $14
2026-10-07	302.AI	$1.75 / $14
2026-10-07	Merge Gateway	$1.75 / $14
2026-10-07	OpenAI	$1.75 / $14
2026-09-22	Opper	$1.75 / $14
2026-09-22	Merge Gateway	$1.75 / $14
2026-09-22	OpenAI	$1.75 / $14
2026-09-22	302.AI	$1.75 / $14
2026-09-21	302.AI	$1.75 / $14
2026-09-21	Merge Gateway	$1.75 / $14
2026-09-21	Opper	$1.75 / $14
2026-09-21	OpenAI	$1.75 / $14
2026-09-20	Opper	$1.75 / $14
2026-09-20	Merge Gateway	$1.75 / $14
2026-09-20	OpenAI	$1.75 / $14
2026-09-20	302.AI	$1.75 / $14
2026-09-19	Merge Gateway	$1.75 / $14
2026-09-19	OpenAI	$1.75 / $14
2026-09-19	Opper	$1.75 / $14
2026-09-19	302.AI	$1.75 / $14
2026-09-18	Opper	$1.75 / $14
2026-09-18	Merge Gateway	$1.75 / $14
2026-09-18	OpenAI	$1.75 / $14
2026-09-18	302.AI	$1.75 / $14
2026-09-17	Merge Gateway	$1.75 / $14
2026-09-17	302.AI	$1.75 / $14
2026-09-17	Opper	$1.75 / $14
2026-09-17	OpenAI	$1.75 / $14