API cost decision in 10 seconds

LongCat 2.0 vs Gemini 3.1 Flash Lite

Pick LongCat 2.0 when budget and context both matter.

Page updated:  Data confirmed:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick LongCat 2.0 when budget and context both matter.

On the standard 1M input plus 500K output workload, LongCat 2.0 is estimated at $0.9 vs $1 for Gemini 3.1 Flash Lite, saving $0.1 (10% lower).

Cost-first pickLongCat 2.0
Context-first pickLongCat 2.0
Sample savings$0.110%
10x traffic gap$1

LongCat 2.0 is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $1. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Cost winner changes by workload shape: input-heavy / RAG favors Gemini 3.1 Flash Lite, balanced workload favors LongCat 2.0, and output-heavy chatbot favors LongCat 2.0.

Workload shapeToken mixBetter pickLongCat 2.0Gemini 3.1 Flash Lite
Input-heavy / RAG5M input + 500K outputGemini 3.1 Flash Lite$2.1$2
Balanced workload1M input + 1M outputLongCat 2.0$1.5$1.75
Output-heavy chatbot1M input + 5M outputLongCat 2.0$6.3$7.75
Cheaper input Gemini 3.1 Flash Lite $0.3 vs $0.25 / 1M

Gemini 3.1 Flash Lite is $0.05 cheaper per 1M input tokens (16.7% lower; 1.2x difference).

Cheaper output LongCat 2.0 $1.2 vs $1.5 / 1M

LongCat 2.0 is $0.3 cheaper per 1M output tokens (20% lower; 1.25x difference).

Larger context LongCat 2.0 1.05M vs 1.05M

LongCat 2.0 has 180 more context (1x larger).

Sample workload LongCat 2.0 $0.9 vs $1

LongCat 2.0 is $0.1 cheaper on the standard workload (10% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
LongCat 2.0 Calculating… Estimated API cost
Gemini 3.1 Flash Lite Calculating… Estimated API cost
Cheaper for this workload Calculating… Difference: calculating…

This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.

Quick Decision

Verdict

Gemini 3.1 Flash Lite has the lower input price; LongCat 2.0 has the lower output price; LongCat 2.0 offers the larger context window. For the 1M input plus 500K output sample, LongCat 2.0 is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $0.9 for LongCat 2.0 and $1 for Gemini 3.1 Flash Lite.

Best Fit

Choose LongCat 2.0 when you care most about lower output-token price, and larger context window.

Choose Gemini 3.1 Flash Lite when you care most about lower input-token price.

Decision Notes
  • On the standard 1M input plus 500K output workload, LongCat 2.0 is estimated at $0.9 vs $1 for Gemini 3.1 Flash Lite, saving $0.1 (10% lower).
  • LongCat 2.0 is $0.1 cheaper on the standard workload (10% lower).
  • Gemini 3.1 Flash Lite is $0.05 cheaper per 1M input tokens (16.7% lower; 1.2x difference).
  • LongCat 2.0 is $0.3 cheaper per 1M output tokens (20% lower; 1.25x difference).
  • LongCat 2.0 has 180 more context (1x larger).
Head-to-Head Specs
FeatureLongCat 2.0
(Meituan)
Gemini 3.1 Flash Lite
(Google)
Input Price
prompt tokens per 1M
$0.3$0.25
Completion Price
per 1M tokens
$1.2$1.5
Sample Workload Cost
1M input + 500K output
$0.9$1
Context Window1.05M1.05M
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionLongCat 2.0On the standard 1M input plus 500K output workload, LongCat 2.0 is estimated at $0.9 vs $1 for Gemini 3.1 Flash Lite, saving $0.1 (10% lower).
High-volume input processingGemini 3.1 Flash LiteLower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsLongCat 2.0Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workLongCat 2.0A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps
  • Gemma 4 26B A4B (free) can replace Gemini 3.1 Flash Lite when lower sample workload cost matters most: $0.
  • Gemma 4 31B (free) can replace Gemini 3.1 Flash Lite when lower sample workload cost matters most: $0.
  • Lyria 3 Pro Preview can replace Gemini 3.1 Flash Lite when lower sample workload cost matters most: $0.
  • Lyria 3 Clip Preview can replace Gemini 3.1 Flash Lite when lower sample workload cost matters most: $0.

Cheaper alternatives

Review low-cost models sorted by a standard 1M input plus 500K output workload.

Open cheapest models

Larger context alternatives

Find models with larger context windows for RAG, long documents, and codebase review.

Open largest context models

Provider catalogs

Compare models within provider hubs before choosing a final API vendor.

Open provider hubs

Meituan catalog

Review all tracked Meituan models before deciding whether this matchup is the right shortlist.

Open Meituan models

Google catalog

Check other Google models with comparable pricing, context, or release timing.

Open Google models
LongCat 2.0

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...

Gemini 3.1 Flash Lite

Gemini 3.1 Flash Lite is Google’s GA high-efficiency multimodal model optimized for low-latency, high-volume workloads. It supports text, image, video, audio, and PDF inputs, and is designed for lightweight agentic...