LongCat-2.5 vs o3
LongCat-2.5 leads the LLM Stats Score 50.0 to 30.4. LongCat-2.5 is 6.7x cheaper per token.
Meituan · OpenAI · Updated for 2026
Which is better?
LongCat-2.5 leads the overall LLM Stats Score 50.0 to 30.4, ranking #20 overall.
In the 2 individual benchmarks reported for both models, LongCat-2.5 wins 2; this is a narrower head-to-head signal than the composite indexes.
On price, LongCat-2.5 is roughly 6.7x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
LongCat-2.5 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose LongCat-2.5
- overall performance matters — it scores 50.0 and ranks #20 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you value its reported benchmark strengths — it wins 2 of 2 exact shared results
- cost matters — it's about 6.7x cheaper per token
- you process long inputs — it offers a 1,048,576 token context window
- you want the most recent training data — it shipped Nov 2026
Choose o3
- you want predictable pricing at $2.00/M input and $8.00/M output
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
23 reported for LongCat-2.5 · 22 for o3
LongCat-2.5 outperforms in 2 benchmarks (BrowseComp, CharXiv-R), while o3 is better at 0 benchmarks.
LongCat-2.5 significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, LongCat-2.5 ($0.30/1M tokens) is 6.7x cheaper than o3 ($2.00/1M tokens).
For output processing, LongCat-2.5 ($1.20/1M tokens) is 6.7x cheaper than o3 ($8.00/1M tokens).
In conclusion, o3 is more expensive than LongCat-2.5.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
LongCat-2.5 accepts 1,048,576 input tokens compared to o3's 200,000 tokens. LongCat-2.5 can generate longer responses up to 131,072 tokens, while o3 is limited to 100,000 tokens.
Input capabilities
Documented input modalities across available providers
Both LongCat-2.5 and o3 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
LongCat-2.5
o3
Release Timeline
When each model was launched
LongCat-2.5 was released on 2026-11-01, while o3 was released on 2025-04-16.
LongCat-2.5 is 19 months newer than o3.
Nov 1, 2026
-1 days ago
1.5yr newerApr 16, 2025
1.5 years ago
Knowledge Cutoff
When training data ends
o3 has a documented knowledge cutoff of 2024-05-31, while LongCat-2.5's cutoff date is not specified.
We can confirm o3's training data extends to 2024-05-31, but cannot make a direct comparison without LongCat-2.5's cutoff date.
—
May 2024
Provider Availability
LongCat-2.5 is available from Meituan. o3 is available from OpenAI.
LongCat-2.5
o3
Outputs Comparison
Judge for yourself.
Run your own prompts against LongCat-2.5 and o3 side-by-side, then vote on the output you prefer.
FAQ
Common questions about LongCat-2.5 vs o3.