Model Comparison

GPT-5.4 vs Devstral Small 1.1Which is better in 2026?

Comparing GPT-5.4 and Devstral Small 1.1 across benchmarks, pricing, and capabilities.

Verdict: GPT-5.4 vs Devstral Small 1.1 — which is better?

GPT-5.4 (by OpenAI) and Devstral Small 1.1 (by Mistral AI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

On price, Devstral Small 1.1 is roughly 37.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

GPT-5.4 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose GPT-5.4 if…

  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Mar 2026

Choose Devstral Small 1.1 if…

  • cost matters — it's about 37.5x cheaper per token
  • you need open weights you can self-host or fine-tune
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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

GPT-5.4 and Devstral Small 1.1don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Devstral Small 1.1 costs less

For input processing, GPT-5.4 ($2.50/1M tokens) is 25.0x more expensive than Devstral Small 1.1 ($0.10/1M tokens).

For output processing, GPT-5.4 ($15.00/1M tokens) is 50.0x more expensive than Devstral Small 1.1 ($0.30/1M tokens).

In conclusion, GPT-5.4 is more expensive than Devstral Small 1.1.*

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

Lowest available price from all providers
Sat Jun 13 2026 • llm-stats.com
OpenAI
GPT-5.4
Input tokens$2.50
Output tokens$15.00
Best providerOpenAI
Mistral AI
Devstral Small 1.1
Input tokens$0.10
Output tokens$0.30
Best providerMistral
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-5.4 accepts 1,000,000 input tokens compared to Devstral Small 1.1's 128,000 tokens. Both models can generate responses up to 128,000 tokens.

OpenAI
GPT-5.4
Input1,000,000 tokens
Output128,000 tokens
Mistral AI
Devstral Small 1.1
Input128,000 tokens
Output128,000 tokens
Sat Jun 13 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5.4 supports multimodal inputs, whereas Devstral Small 1.1 does not.

GPT-5.4 can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-5.4

Text
Images
Audio
Video

Devstral Small 1.1

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-5.4 is licensed under a proprietary license, while Devstral Small 1.1 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

Devstral Small 1.1

Apache 2.0

Open weights

Release Timeline

When each model was launched

GPT-5.4 was released on 2026-03-05, while Devstral Small 1.1 was released on 2025-07-11.

GPT-5.4 is 8 months newer than Devstral Small 1.1.

GPT-5.4

Mar 5, 2026

3 months ago

7mo newer
Devstral Small 1.1

Jul 11, 2025

11 months ago

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. Devstral Small 1.1 is available from Mistral AI.

GPT-5.4

openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $15.00/1M

Devstral Small 1.1

mistral logo
Mistral
Input Price:Input: $0.10/1MOutput Price:Output: $0.30/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Larger context window (1,000,000 tokens)
Supports multimodal inputs
Mistral AI
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-5.4
Mistral AI
Devstral Small 1.1

FAQ

Common questions about GPT-5.4 vs Devstral Small 1.1.

Which is better, GPT-5.4 or Devstral Small 1.1?

GPT-5.4 (OpenAI) and Devstral Small 1.1 (Mistral AI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does GPT-5.4 compare to Devstral Small 1.1 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%. Devstral Small 1.1 scores SWE-Bench Verified: 53.6%.

Is GPT-5.4 cheaper than Devstral Small 1.1?

Devstral Small 1.1 is 25.0x cheaper for input tokens. GPT-5.4 costs $2.50/M input and $15.00/M output via openai. Devstral Small 1.1 costs $0.10/M input and $0.30/M output via mistral.

What are the context window sizes for GPT-5.4 and Devstral Small 1.1?

GPT-5.4 supports 1.0M tokens and Devstral Small 1.1 supports 128K 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 Devstral Small 1.1?

Key differences include context window (1.0M vs 128K), input pricing ($2.50 vs $0.10/M), multimodal support (yes vs no), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5.4 and Devstral Small 1.1?

GPT-5.4 is developed by OpenAI and Devstral Small 1.1 is developed by Mistral AI.

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