Model Comparison

GPT-5.4 vs LongCat-Flash-Thinking-2601

GPT-5.4 shows notably better performance in the majority of benchmarks. LongCat-Flash-Thinking-2601 is 10.7x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

GPT-5.4 outperforms in 3 benchmarks (BrowseComp, GPQA, Humanity's Last Exam), while LongCat-Flash-Thinking-2601 is better at 1 benchmark (Tau2 Telecom).

GPT-5.4 shows notably better performance in the majority of benchmarks.

Mon Apr 20 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

LongCat-Flash-Thinking-2601 costs less

For input processing, GPT-5.4 ($2.50/1M tokens) is 8.3x more expensive than LongCat-Flash-Thinking-2601 ($0.30/1M tokens).

For output processing, GPT-5.4 ($15.00/1M tokens) is 12.5x more expensive than LongCat-Flash-Thinking-2601 ($1.20/1M tokens).

In conclusion, GPT-5.4 is more expensive than LongCat-Flash-Thinking-2601.*

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

Lowest available price from all providers
Mon Apr 20 2026 • llm-stats.com
OpenAI
GPT-5.4
Input tokens$2.50
Output tokens$15.00
Best providerOpenAI
Meituan
LongCat-Flash-Thinking-2601
Input tokens$0.30
Output tokens$1.20
Best providerMeituan
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 LongCat-Flash-Thinking-2601'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
Meituan
LongCat-Flash-Thinking-2601
Input128,000 tokens
Output128,000 tokens
Mon Apr 20 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5.4 supports multimodal inputs, whereas LongCat-Flash-Thinking-2601 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

LongCat-Flash-Thinking-2601

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-5.4 is licensed under a proprietary license, while LongCat-Flash-Thinking-2601 uses MIT.

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

GPT-5.4

Proprietary

Closed source

LongCat-Flash-Thinking-2601

MIT

Open weights

Release Timeline

When each model was launched

GPT-5.4 was released on 2026-03-05, while LongCat-Flash-Thinking-2601 was released on 2026-01-14.

GPT-5.4 is 2 months newer than LongCat-Flash-Thinking-2601.

GPT-5.4

Mar 5, 2026

1 months ago

1mo newer
LongCat-Flash-Thinking-2601

Jan 14, 2026

3 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. LongCat-Flash-Thinking-2601 is available from Meituan.

GPT-5.4

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

LongCat-Flash-Thinking-2601

meituan logo
Meituan
Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

OpenAI
Larger context window (1,000,000 tokens)
Supports multimodal inputs
Higher BrowseComp score (82.7% vs 56.6%)
Higher GPQA score (92.8% vs 80.5%)
Higher Humanity's Last Exam score (39.8% vs 25.2%)
Meituan
Less expensive input tokens
Less expensive output tokens
Has open weights
Higher Tau2 Telecom score (99.3% vs 98.9%)

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-5.4
Meituan
LongCat-Flash-Thinking-2601

FAQ

Common questions about GPT-5.4 vs LongCat-Flash-Thinking-2601

GPT-5.4 shows notably better performance in the majority of benchmarks. GPT-5.4 is made by OpenAI and LongCat-Flash-Thinking-2601 is made by Meituan. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
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%. LongCat-Flash-Thinking-2601 scores AIME 2025: 99.6%, Tau2 Telecom: 99.3%, Tau2 Retail: 88.6%, LiveCodeBench: 82.8%, GPQA: 80.5%.
LongCat-Flash-Thinking-2601 is 8.3x cheaper for input tokens. GPT-5.4 costs $2.50/M input and $15.00/M output via openai. LongCat-Flash-Thinking-2601 costs $0.30/M input and $1.20/M output via meituan.
GPT-5.4 supports 1.0M tokens and LongCat-Flash-Thinking-2601 supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (1.0M vs 128K), input pricing ($2.50 vs $0.30/M), multimodal support (yes vs no), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.
GPT-5.4 is developed by OpenAI and LongCat-Flash-Thinking-2601 is developed by Meituan.