Model Comparison

GPT-5.4 vs DeepSeek-V3.1Which is better in 2026?

GPT-5.4 significantly outperforms across most benchmarks. DeepSeek-V3.1 is 12.4x cheaper per token.

Verdict: GPT-5.4 vs DeepSeek-V3.1 — which is better?

GPT-5.4 (by OpenAI) and DeepSeek-V3.1 (by DeepSeek) 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.

GPT-5.4 outperforms in 3 benchmarks (BrowseComp, GPQA, Humanity's Last Exam), while DeepSeek-V3.1 is better at 0 benchmarks. GPT-5.4 significantly outperforms across most benchmarks.

On price, DeepSeek-V3.1 is roughly 12.4x 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 want the strongest raw capability — it leads on 3 of 3 shared benchmarks
  • 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 DeepSeek-V3.1 if…

  • cost matters — it's about 12.4x 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

3 benchmarks

GPT-5.4 outperforms in 3 benchmarks (BrowseComp, GPQA, Humanity's Last Exam), while DeepSeek-V3.1 is better at 0 benchmarks.

GPT-5.4 significantly outperforms across most benchmarks.

Sat Jun 06 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

DeepSeek-V3.1 costs less

For input processing, GPT-5.4 ($2.50/1M tokens) is 9.3x more expensive than DeepSeek-V3.1 ($0.27/1M tokens).

For output processing, GPT-5.4 ($15.00/1M tokens) is 15.0x more expensive than DeepSeek-V3.1 ($1.00/1M tokens).

In conclusion, GPT-5.4 is more expensive than DeepSeek-V3.1.*

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

Lowest available price from all providers
Sat Jun 06 2026 • llm-stats.com
OpenAI
GPT-5.4
Input tokens$2.50
Output tokens$15.00
Best providerOpenAI
DeepSeek
DeepSeek-V3.1
Input tokens$0.27
Output tokens$1.00
Best providerDeepinfra
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 DeepSeek-V3.1's 163,840 tokens. DeepSeek-V3.1 can generate longer responses up to 163,840 tokens, while GPT-5.4 is limited to 128,000 tokens.

OpenAI
GPT-5.4
Input1,000,000 tokens
Output128,000 tokens
DeepSeek
DeepSeek-V3.1
Input163,840 tokens
Output163,840 tokens
Sat Jun 06 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5.4 supports multimodal inputs, whereas DeepSeek-V3.1 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

DeepSeek-V3.1

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-5.4 is licensed under a proprietary license, while DeepSeek-V3.1 uses MIT.

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

GPT-5.4

Proprietary

Closed source

DeepSeek-V3.1

MIT

Open weights

Release Timeline

When each model was launched

GPT-5.4 was released on 2026-03-05, while DeepSeek-V3.1 was released on 2025-01-10.

GPT-5.4 is 14 months newer than DeepSeek-V3.1.

GPT-5.4

Mar 5, 2026

3 months ago

1.1yr newer
DeepSeek-V3.1

Jan 10, 2025

1.4 years 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. DeepSeek-V3.1 is available from DeepInfra, Novita.

GPT-5.4

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

DeepSeek-V3.1

deepinfra logo
Deepinfra
Input Price:Input: $0.27/1MOutput Price:Output: $1.00/1M
novita logo
Novita
Input Price:Input: $0.27/1MOutput Price:Output: $1.00/1M
* 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
Higher BrowseComp score (82.7% vs 30.0%)
Higher GPQA score (92.8% vs 74.9%)
Higher Humanity's Last Exam score (39.8% vs 15.9%)
DeepSeek
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-5.4
DeepSeek
DeepSeek-V3.1

FAQ

Common questions about GPT-5.4 vs DeepSeek-V3.1.

Which is better, GPT-5.4 or DeepSeek-V3.1?

GPT-5.4 significantly outperforms across most benchmarks. GPT-5.4 is made by OpenAI and DeepSeek-V3.1 is made by DeepSeek. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-5.4 compare to DeepSeek-V3.1 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%. DeepSeek-V3.1 scores SimpleQA: 93.4%, MMLU-Redux: 91.8%, MMLU-Pro: 83.7%, GPQA: 74.9%, CodeForces: 69.7%.

Is GPT-5.4 cheaper than DeepSeek-V3.1?

DeepSeek-V3.1 is 9.3x cheaper for input tokens. GPT-5.4 costs $2.50/M input and $15.00/M output via openai. DeepSeek-V3.1 costs $0.27/M input and $1.00/M output via deepinfra.

What are the context window sizes for GPT-5.4 and DeepSeek-V3.1?

GPT-5.4 supports 1.0M tokens and DeepSeek-V3.1 supports 164K 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 DeepSeek-V3.1?

Key differences include context window (1.0M vs 164K), input pricing ($2.50 vs $0.27/M), multimodal support (yes vs no), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5.4 and DeepSeek-V3.1?

GPT-5.4 is developed by OpenAI and DeepSeek-V3.1 is developed by DeepSeek.

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