GPT-5 Medium vs GPT-5.4 mini
GPT-5 Medium and GPT-5.4 mini are closely matched at 29.6 and 30.1 on the LLM Stats Score. GPT-5.4 mini is 2.0x cheaper per token.
OpenAI · OpenAI · Updated for 2026
Which is better?
GPT-5 Medium and GPT-5.4 mini are closely matched on the overall LLM Stats Score at 29.6 and 30.1.
In the 1 individual benchmarks reported for both models, GPT-5 Medium wins 1; this is a narrower head-to-head signal than the composite indexes.
On price, GPT-5.4 mini is roughly 2.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose GPT-5 Medium
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
Choose GPT-5.4 mini
- cost matters — it's about 2.0x cheaper per token
- you want the most recent training data — it shipped Mar 2026
At a glance
The differences that matter most.
Individual benchmarks
2 reported for GPT-5 Medium · 15 for GPT-5.4 mini
GPT-5 Medium outperforms in 1 benchmarks (GPQA), while GPT-5.4 mini is better at 0 benchmarks.
GPT-5 Medium significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, GPT-5 Medium ($1.25/1M tokens) is 1.7x more expensive than GPT-5.4 mini ($0.75/1M tokens).
For output processing, GPT-5 Medium ($10.00/1M tokens) is 2.2x more expensive than GPT-5.4 mini ($4.50/1M tokens).
In conclusion, GPT-5 Medium is more expensive than GPT-5.4 mini.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Both models have the same input context window of 400,000 tokens. Both models can generate responses up to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
Both GPT-5 Medium and GPT-5.4 mini support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GPT-5 Medium
GPT-5.4 mini
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
GPT-5 Medium was released on 2025-08-07, while GPT-5.4 mini was released on 2026-03-17.
GPT-5.4 mini is 7 months newer than GPT-5 Medium.
Aug 7, 2025
1.1 years ago
Mar 17, 2026
6 months ago
7mo newerKnowledge Cutoff
When training data ends
GPT-5 Medium has a knowledge cutoff of 2024-09-30, while GPT-5.4 mini has a cutoff of 2025-08-31.
GPT-5.4 mini has more recent training data (up to 2025-08-31), making it potentially better informed about events through that date compared to GPT-5 Medium (2024-09-30).
Sep 2024
Aug 2025
11 mo newerProvider Availability
GPT-5 Medium is available from OpenAI. GPT-5.4 mini is available from OpenAI.
GPT-5 Medium
GPT-5.4 mini
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-5 Medium and GPT-5.4 mini side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-5 Medium vs GPT-5.4 mini.