GPT-5.4 vs Mistral Small 4 Comparison

Comparing GPT-5.4 and Mistral Small 4 across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

GPT-5.4 outperforms in 2 benchmarks (GPQA, MMMU-Pro), while Mistral Small 4 is better at 0 benchmarks.

GPT-5.4 significantly outperforms across most benchmarks.

Wed Mar 18 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Mistral Small 4 costs less

For input processing, GPT-5.4 ($2.50/1M tokens) is 16.7x more expensive than Mistral Small 4 ($0.15/1M tokens).

For output processing, GPT-5.4 ($15.00/1M tokens) is 25.0x more expensive than Mistral Small 4 ($0.60/1M tokens).

In conclusion, GPT-5.4 is more expensive than Mistral Small 4.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Wed Mar 18 2026 • llm-stats.com

GPT-5.4

Input tokens$2.50

Output tokens$15.00

Best providerOpenAI

Mistral Small 4

Input tokens$0.15

Output tokens$0.60

Best providerMistral

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Context Window

Maximum input and output token capacity

GPT-5.4 accepts 1,000,000 input tokens compared to Mistral Small 4's 256,000 tokens. Mistral Small 4 can generate longer responses up to 256,000 tokens, while GPT-5.4 is limited to 128,000 tokens.

GPT-5.4

Input1,000,000 tokens

Output128,000 tokens

Mistral Small 4

Input256,000 tokens

Output256,000 tokens

Wed Mar 18 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-5.4 and Mistral Small 4 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

GPT-5.4

Text

Images

Audio

Video

Mistral Small 4

Text

Images

Audio

Video

License

Usage and distribution terms

GPT-5.4 is licensed under a proprietary license, while Mistral Small 4 uses Apache 2.0.

License differences may affect how you can use these models in commercial or open-source projects.

GPT-5.4

Proprietary

Closed source

Mistral Small 4

Apache 2.0

Open weights

Release Timeline

When each model was launched

GPT-5.4 was released on 2026-03-05, while Mistral Small 4 was released on 2026-03-16.

Mistral Small 4 is 0 month newer than GPT-5.4.

GPT-5.4

Mar 5, 2026

1 weeks ago

Mistral Small 4

Mar 16, 2026

2 days ago

1w newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

GPT-5.4 is available from OpenAI. Mistral Small 4 is available from Mistral AI. The availability of providers can affect quality of the model and reliability.