Model Comparison

GPT-5.4 vs Mistral Medium 3.5

Q: Is GPT-5.4 cheaper than Mistral Medium 3.5?

Mistral Medium 3.5 is 1.7x cheaper for input tokens. GPT-5.4 costs $2.50/M input and $15.00/M output via openai. Mistral Medium 3.5 costs $1.50/M input and $7.50/M output via mistral.

Q: What are the context window sizes for GPT-5.4 and Mistral Medium 3.5?

GPT-5.4 supports 1.0M tokens and Mistral Medium 3.5 supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

Q: What are the main differences between GPT-5.4 and Mistral Medium 3.5?

Key differences include context window (1.0M vs 256K), input pricing ($2.50 vs $1.50/M), licensing (Proprietary vs Modified MIT License). See the full comparison above for benchmark-by-benchmark results.

Q: Who makes GPT-5.4 and Mistral Medium 3.5?

GPT-5.4 is developed by OpenAI and Mistral Medium 3.5 is developed by Mistral AI.

GPT-5.4 significantly outperforms across most benchmarks. Mistral Medium 3.5 is 1.9x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

GPT-5.4 outperforms in 1 benchmarks (BrowseComp), while Mistral Medium 3.5 is better at 0 benchmarks.

GPT-5.4 significantly outperforms across most benchmarks.

Wed May 20 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Mistral Medium 3.5 costs less

For input processing, GPT-5.4 ($2.50/1M tokens) is 1.7x more expensive than Mistral Medium 3.5 ($1.50/1M tokens).

For output processing, GPT-5.4 ($15.00/1M tokens) is 2.0x more expensive than Mistral Medium 3.5 ($7.50/1M tokens).

In conclusion, GPT-5.4 is more expensive than Mistral Medium 3.5.*

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

Lowest available price from all providers

Wed May 20 2026 • llm-stats.com

GPT-5.4

Input tokens$2.50

Output tokens$15.00

Best providerOpenAI

Mistral Medium 3.5

Input tokens$1.50

Output tokens$7.50

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 Medium 3.5's 256,000 tokens. Mistral Medium 3.5 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 Medium 3.5

Input256,000 tokens

Output256,000 tokens

Wed May 20 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-5.4 and Mistral Medium 3.5 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 Medium 3.5

Text

Images

Audio

Video

License

Usage and distribution terms

GPT-5.4 is licensed under a proprietary license, while Mistral Medium 3.5 uses Modified MIT License.

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

GPT-5.4

Proprietary

Closed source

Mistral Medium 3.5

Modified MIT License

Open weights

Release Timeline

When each model was launched

GPT-5.4 was released on 2026-03-05, while Mistral Medium 3.5 was released on 2026-04-29.

Mistral Medium 3.5 is 2 months newer than GPT-5.4.

GPT-5.4

Mar 5, 2026

2 months ago

Mistral Medium 3.5

Apr 29, 2026

3 weeks ago

1mo 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 Medium 3.5 is available from Mistral AI.

GPT-5.4

OpenAI

Input Price:Input: $2.50/1MOutput Price:Output: $15.00/1M

Mistral Medium 3.5

Mistral

Input Price:Input: $1.50/1MOutput Price:Output: $7.50/1M

* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

GPT-5.4

View details

OpenAI

Larger context window (1,000,000 tokens)

Higher BrowseComp score (82.7% vs 48.6%)

Mistral Medium 3.5

View details

Mistral AI

Less expensive input tokens

Less expensive output tokens

Has open weights

Detailed Comparison

AI Model Comparison Table
Feature	GPT-5.4	Mistral Medium 3.5

FAQ

Common questions about GPT-5.4 vs Mistral Medium 3.5.

Which is better, GPT-5.4 or Mistral Medium 3.5?

GPT-5.4 significantly outperforms across most benchmarks. GPT-5.4 is made by OpenAI and Mistral Medium 3.5 is made by Mistral AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-5.4 compare to Mistral Medium 3.5 in benchmarks?

GPT-5.4 scores Tau2 Telecom: 98.9%, ARC-AGI: 93.7%, Graphwalks BFS <128k: 93.0%, GPQA: 92.8%, Graphwalks parents <128k: 89.8%. Mistral Medium 3.5 scores COLLIE: 95.8%, Tau3 Telecom: 91.4%, AIME 2025: 86.3%, SWE-Bench Verified: 77.6%, Tau3 Retail: 76.1%.

Is GPT-5.4 cheaper than Mistral Medium 3.5?

Mistral Medium 3.5 is 1.7x cheaper for input tokens. GPT-5.4 costs $2.50/M input and $15.00/M output via openai. Mistral Medium 3.5 costs $1.50/M input and $7.50/M output via mistral.

What are the context window sizes for GPT-5.4 and Mistral Medium 3.5?

GPT-5.4 supports 1.0M tokens and Mistral Medium 3.5 supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-5.4 and Mistral Medium 3.5?

Key differences include context window (1.0M vs 256K), input pricing ($2.50 vs $1.50/M), licensing (Proprietary vs Modified MIT License). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5.4 and Mistral Medium 3.5?

GPT-5.4 is developed by OpenAI and Mistral Medium 3.5 is developed by Mistral AI.