gpt-5 Free API on GitHub Models

Free API

Available from GitHub Models

★★★★★★★★★★ 3.5 Benchmark-backed score

gpt-5 — free model from GitHub Models.

Free APIOpenAI compatibleReasoningJSON modeTextImageReasoning

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Context window 200K

Max output 32K

API format OpenAI Chat Completions

Status Online

AI Recommendation

Should you use gpt-5?

gpt-5 is listed for chat workloads and supports a 200K context window.

Use it when GitHub Models's free tier is enough for evaluation, demos, or light production traffic.

Best for

Chat

Strengths & Weaknesses

Strengths

Long context window
Reasoning mode listed
Structured JSON output
Works with OpenAI-style SDKs

Watch outs

Free-tier rate limits apply
Tool calling is not confirmed

Benchmark Overview

Benchmark signals for gpt-5

Measured data

Coding Programming and code generation

21.2/100

Speed Observed generation speed

92 tok/s

Context Maximum listed context window

200K

Model Metadata

gpt-5 model ID and technical details

Provider catalog

Model ID gpt-5

Family gpt-5-chat

Knowledge cutoff 2024-09-30

Released Aug 7, 2025

Last updated Jul 7, 2026

Free listing since Aug 7, 2025

Input text, image, reasoning

Output text

Capabilities reasoning, structured output

Pricing

gpt-5 pricing per 1M tokens

Free tier listed

Input $1.25 per 1M tokens

Output $10 per 1M tokens

Free access Available GitHub Models

Rate limit 10 RPM, 50 RPD provider policy

Availability

gpt-5 availability by provider

Current provider only

We only found this gpt-5-chat listing on GitHub Models in the current catalog. Use the related models section for nearby alternatives.

Provider	Model listing	Access	Context	API	Limits
GitHub Models	gpt-5	Free tier	200K	OpenAI-style	10 RPM, 50 RPD

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Compare

gpt-5 alternatives to consider

Open comparison

Model	Provider	Context	Access
Phi-4	GitHub Models	131K	Free tier
Mistral Large (24.11)	GitHub Models	131K	Free tier
AI21 Jamba 1.5 Large	GitHub Models	256K	Free tier
gpt-4.1	GitHub Models	1.0M	Free tier
gpt-4.1-mini	GitHub Models	1.0M	Free tier

Typical Use Cases

gpt-5 use cases

Chat

gpt-5 is tagged for chat in this catalog and works with OpenAI-compatible client libraries.

FAQ

gpt-5 free API FAQ

Is gpt-5 free to use?

gpt-5 is listed with free API access on GitHub Models, subject to the provider's quota and account policy.

What is the gpt-5 model ID?

The model ID shown in this catalog is gpt-5.

What are the gpt-5 free tier rate limits on GitHub Models?

The listed free tier limit is 10 RPM, 50 RPD. Limits can change per account tier, so confirm against the provider dashboard.

What context window does gpt-5 support?

The listed context window is 200K tokens with up to 32K output tokens.

More about gpt-5