MELongCat 2.0 Open vs 
Mistral Medium 3.1 (batch) Paid
LongCat 2.0 vs Mistral Medium 3.1 (batch) compared — price per token, context window, multimodality, openness and which to choose. Can the open-source model replace the paid one? Full 2026 breakdown.
Mistral Medium 3.1 (batch) — full profile ›
Prices & specs refreshed from live data · olud.ai
Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.
$1.2 /M outputNo per-token fees if you self-host
$1 /M outputManaged API (no infra to run)
LongCat 2.0 vs Mistral Medium 3.1 (batch) specs
| Spec | LongCat 2.0 | Mistral Medium 3.1 (batch) | Winner |
|---|---|---|---|
| Maker | Meituan | Mistral AI | – |
| Type | Open-weight | Proprietary | MELongCat 2.0 |
| Context window | 1M tokens | 131K tokens | MELongCat 2.0 |
| Input price | $0.3/M · free self-host | $0.2/M | |
| Output price | $1.2/M · free self-host | $1/M | |
| Vision / multimodal | No | Yes | |
| Tool / function calling | Yes | Yes | = Tie |
| Self-hostable | Yes | No (API only) | MELongCat 2.0 |
| License | Open weights | Proprietary | MELongCat 2.0 |
Price gap & when to choose each
- You want to self-host or run on your cloud
- You need the longer 1M context window
- You prioritize data privacy & control
- You are building open or reproducible AI
- You want frontier performance through a managed API
- You want the lower output price
- You value reliability & ecosystem
- You don't want to manage infrastructure
Feature comparison
| Capability | LongCat 2.0 | Mistral Medium 3.1 (batch) |
|---|---|---|
| Open weights (downloadable) | ✓ | ✗ |
| Self-hostable | ✓ | ✗ |
| Runs fully offline | ✓ | ✗ |
| Vision / multimodal | ✗ | ✓ |
| Tool / function calling | ✓ | ✓ |
| 1M+ context window | ✓ | ✗ |
Benchmarks: LongCat 2.0 vs Mistral Medium 3.1 (batch)
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
How LongCat 2.0 and Mistral Medium 3.1 (batch) score
| Criterion | LongCat 2.0 | Mistral Medium 3.1 (batch) |
|---|---|---|
| Cost-efficiency | 4.5 | 4.5 |
| Context window | 5.0 | 3.5 |
| Openness | 5.0 | 1.5 |
| Self-hosting | 5.0 | 1.0 |
| Multimodality | 3.5 | 5.0 |
Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.
What each model is
LongCat 2.0 Open
LongCat 2.0 is a sparse mixture-of-experts language model from Meituan, with 48B active parameters out of 1.6T total. It is suited for coding, repository-level changes, long-horizon problem solving, and agentic...
Mistral Medium 3.1 (batch) Paid
Mistral Medium 3.1 is an updated version of Mistral Medium 3, which is a high-performance enterprise-grade language model designed to deliver frontier-level capabilities at significantly reduced operational cost. It balances...
Frequently asked questions
Is LongCat 2.0 as good as Mistral Medium 3.1 (batch)?
LongCat 2.0 is open-weight and competitive on many tasks, but Mistral Medium 3.1 (batch) may still lead on the hardest reasoning and agentic work. The gap keeps narrowing — benchmark both on your actual use case before deciding.
Can I run LongCat 2.0 locally?
Yes. LongCat 2.0 has open weights, so you can self-host it on your own GPUs or run it via a low-cost API. Mistral Medium 3.1 (batch) is API-only and cannot be self-hosted.
LongCat 2.0 vs Mistral Medium 3.1 (batch) — which should I pick in 2026?
Choose LongCat 2.0 if you want to self-host, keep your data private and skip per-token fees — it's open-weight and runs on your own hardware. Choose Mistral Medium 3.1 (batch) if you want frontier capability through a managed API with zero infrastructure to run.
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