OpenAI
·Released on Mar 3, 2026

GPT-5.3 API Benchmarks, Pricing & Provider Data

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LLM

GPT-5.3 API pricing covers 440 API providers, from $0.020/request to $495.00/M. GPT-5.3 free API options are available from 3 providers. The page also shows measured API speed and first-token latency.

OpenAI GPT-5.3 is a GPT-5 series checkpoint tuned for stronger reasoning, coding, and agentic workflows on complex user tasks.

Speed
59char/s
2.57 s
Cost
$0.020/ 1M · 8:1 in:out
$0.0032 in · $0.017 out

Specifications

Input and output token limits for this model, plus how it ranks on long-context understanding.

INPUT
128Ktokens
153.6 pages of text
OUTPUT
16.4Ktokens
8K128K1M4M
128K

Features

Technical Details

Input
Output
Released
Mar 2026
Documentation
Tokenizer
GPT
Architecture
text+image+file->text
Moderated
No
Supported parameters
max_completion_tokensmax_tokensresponse_formatseedstructured_outputstool_choicetools

Pricing Comparison

Compare GPT-5.3 API pricing across 437 providers. Prices range from $0.020/request to $495.00/M. 初叶🍂Furry API offers the lowest rate at $0.020/request. 3 providers offer free API credits or a free tier.

ProviderHealthModel VariantGroupInput ($/M)Output ($/M)Speed (t/s)First tokenAudit
L1
100%
gpt-5.3-chat-latest
default
$0.240/M
$1.92/M
55.7 t/s
2.76 s
L1
99%
gpt-5.3-chat-latest
default
$1.05/M
$8.40/M
51.1 t/s
2.25 s
L1
99%
gpt-5.3-chat-2026-03-03
default
$1.05/M
$8.40/M
L1
99%
gpt-5.3-chat
OFC
$5.25/M
$42.00/M
L1
100%
gpt-5.3-chat-latest
default
$0.120/M
$0.959/M
L1
100%
gpt-5.3-chat-latest
default
$1.75/M
$14.00/M
L1
100%
gpt-5.3-chat-2026-03-03
Azure
$0.120/M
$0.959/M
L1
100%
gpt-5.3-chat-latest
Azure
$0.120/M
$0.959/M
L1
100%
gpt-5.3-chat
default
$0.240/M
$1.92/M
L1
100%
gpt-5.3-chat-latest
default
$0.240/M
$1.92/M
L1
100%
gpt-5.3-chat-2026-03-03
default
$0.240/M
$1.92/M
L1
100%
gpt-5.3-chat
default
$75.00/M
$600.00/M
L1
100%
gpt-5.3-chat-latest
default
$75.00/M
$600.00/M
L1
100%
gpt-5.3-chat-latest
原价分组
Free
Free
L1
100%
gpt-5.3-chat-latest
default
$0.120/M
$0.959/M
L1
100%
gpt-5.3-chat-2026-03-03
default
$0.072/M
$0.575/M
L1
100%
gpt-5.3-chat
default
$0.072/M
$0.575/M
L1
100%
gpt-5.3-chat-latest
default
$0.072/M
$0.575/M
L1
100%
gpt-5.3-chat-latest
gpt-azure
$0.465/M
$3.72/M
L1
100%
gpt-5.3-chat-latest
gpt-azure
$1.75/M
Cache read$0.175/M
$14.00/M
Showing 20 model IDs of 57.

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Frequently Asked Questions

What benchmark data does GPT-5.3 include?
LMSpeed shows GPT-5.3 benchmark context, API price, output speed, first-token latency, and provider data across 440 providers when those signals are available.
What is the GPT-5.3 API price?
GPT-5.3 has pricing from 440 providers, ranging from $0.020/request to $495.00/M. 初叶🍂Furry API has the lowest listed price.
What does the GPT-5.3 API pricing table include?
The GPT-5.3 API pricing table compares 440 providers by input price, output price, free tier status, speed, first-token latency, and recent health data when available.
Which provider has the cheapest GPT-5.3 API pricing?
初叶🍂Furry API currently has the lowest listed GPT-5.3 price at $0.020/request across 440 providers.
Can I compare GPT-5.3 API price and speed together?
Yes. LMSpeed shows GPT-5.3 API price, output speed, first-token latency, and provider health on the same page so you can compare cost and performance together.
Is GPT-5.3 API free?
Yes, GPT-5.3 free API options are available through 3 providerundefined other undefined} on LMSpeed, including 初叶🍂Furry API, 兔子API, 兔子API. These providers offer free API credits or a free tier with no per-token charges.
Where can I get GPT-5.3 free API access?
LMSpeed currently lists 3 free API providerundefined other undefined} for GPT-5.3: 初叶🍂Furry API, 兔子API, 兔子API. Check each provider row before using it because free tier limits can change.

Also known as

[lq]q|XQ/gpt-5.3-chat-latestb/gpt-5.3-chat-latestgpt-5-3gpt-5-3-chatgpt-5.3

Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.Standard benchmark data may include BenchLM and other public sources.

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