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Devstral Medium vs LongCat-Flash-Chat

Devstral Medium and LongCat-Flash-Chat are closely matched at 13.9 and 20.0 on the LLM Stats Score. LongCat-Flash-Chat is 1.5x cheaper per token.

Mistral AI · Meituan · Updated for 2026

Which is better?

Devstral Medium and LongCat-Flash-Chat are closely matched on the overall LLM Stats Score at 13.9 and 20.0.

In the 1 individual benchmarks reported for both models, Devstral Medium wins 1; this is a narrower head-to-head signal than the composite indexes.

On price, LongCat-Flash-Chat is roughly 1.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Devstral Medium

  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results

Choose LongCat-Flash-Chat

  • cost matters — it's about 1.5x cheaper per token
  • you want the most recent training data — it shipped Aug 2025
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Devstral Medium
Mistral AI
LongCat-Flash-Chat
Meituan
Core performance indexes
LLM Stats Score
13.9
#230
20.0
#188
Reasoning
13.8
#224
19.9
#183
Coding
5.7
#189
12.6
#137
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
$0.40 / M
$0.30 / M
Output price
$2.00 / M
$1.20 / M
Context window
128,000
128,000

Individual benchmarks

1 reported for Devstral Medium · 16 for LongCat-Flash-Chat

1 shared

Devstral Medium outperforms in 1 benchmarks (SWE-Bench Verified), while LongCat-Flash-Chat is better at 0 benchmarks.

Devstral Medium significantly outperforms across most benchmarks.

Fri Sep 04 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

LongCat-Flash-Chat costs less

For input processing, Devstral Medium ($0.40/1M tokens) is 1.3x more expensive than LongCat-Flash-Chat ($0.30/1M tokens).

For output processing, Devstral Medium ($2.00/1M tokens) is 1.7x more expensive than LongCat-Flash-Chat ($1.20/1M tokens).

In conclusion, Devstral Medium is more expensive than LongCat-Flash-Chat.*

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

Lowest available price from all providers
Fri Sep 04 2026 • llm-stats.com
Mistral AI
Devstral Medium
Input tokens$0.40
Output tokens$2.00
Best providerMistral
Meituan
LongCat-Flash-Chat
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

Both models have the same input context window of 128,000 tokens. Both models can generate responses up to 128,000 tokens.

Mistral AI
Devstral Medium
Input128,000 tokens
Output128,000 tokens
Meituan
LongCat-Flash-Chat
Input128,000 tokens
Output128,000 tokens
Fri Sep 04 2026 • llm-stats.com

License

Usage and distribution terms

Devstral Medium is licensed under a proprietary license, while LongCat-Flash-Chat uses MIT.

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

Devstral Medium

Proprietary

Closed source

LongCat-Flash-Chat

MIT

Open weights

Release Timeline

When each model was launched

Devstral Medium was released on 2025-07-10, while LongCat-Flash-Chat was released on 2025-08-29.

LongCat-Flash-Chat is 2 months newer than Devstral Medium.

Devstral Medium

Jul 10, 2025

1.2 years ago

LongCat-Flash-Chat

Aug 29, 2025

1.0 years 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

Devstral Medium is available from Mistral AI. LongCat-Flash-Chat is available from Meituan.

Devstral Medium

mistral logo
Mistral
Input Price:Input: $0.40/1MOutput Price:Output: $2.00/1M

LongCat-Flash-Chat

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

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Devstral Medium and LongCat-Flash-Chat side-by-side, then vote on the output you prefer.

Devstral Medium
✓ Preferred
LongCat-Flash-Chat
Open in Playground

FAQ

Common questions about Devstral Medium vs LongCat-Flash-Chat.

Which is better, Devstral Medium or LongCat-Flash-Chat?

Devstral Medium and LongCat-Flash-Chat are closely matched on the LLM Stats Score at 13.9 and 20.0. Devstral Medium is made by Mistral AI and LongCat-Flash-Chat is made by Meituan. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Devstral Medium compare to LongCat-Flash-Chat in benchmarks?

Devstral Medium scores SWE-Bench Verified: 61.6%. LongCat-Flash-Chat scores MATH-500: 96.4%, MMLU: 89.7%, IFEval: 89.6%, ZebraLogic: 89.3%, HumanEval: 88.4%.

Is Devstral Medium cheaper than LongCat-Flash-Chat?

LongCat-Flash-Chat is 1.3x cheaper for input tokens. Devstral Medium costs $0.40/M input and $2.00/M output via mistral. LongCat-Flash-Chat costs $0.30/M input and $1.20/M output via meituan.

What are the context window sizes for Devstral Medium and LongCat-Flash-Chat?

Devstral Medium supports 128K tokens and LongCat-Flash-Chat 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 Devstral Medium and LongCat-Flash-Chat?

Key differences include LLM Stats Score (13.9 vs 20.0), input pricing ($0.40 vs $0.30/M), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Devstral Medium and LongCat-Flash-Chat?

Devstral Medium is developed by Mistral AI and LongCat-Flash-Chat is developed by Meituan.

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