Model comparison
Seed 2.0 Pro vs Gemini 3.1 Flash Lite
Seed 2.0 Pro is the stronger model overall, scoring 43.2 to 40.8 on the Noometry Index. Gemini 3.1 Flash Lite costs 2.0× less per token, which makes it the better buy when Seed 2.0 Pro's lead doesn't matter for your workload.
Last verified . 20 shared benchmarks.
ByteDance Seed
GoogleSummary
- They share 20 benchmarks with published results for both. Seed 2.0 Pro scores higher in 7 categories and Gemini 3.1 Flash Lite in 2 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in coding, where Seed 2.0 Pro leads 43.5 to 37.8.
- The biggest single-benchmark swing is NYT Connections (extended): 28.4% for Seed 2.0 Pro and 8.2% for Gemini 3.1 Flash Lite.
- Gemini 3.1 Flash Lite is cheaper at $0.25 / $1.50 per million input/output tokens, against $0.50 / $3 for Seed 2.0 Pro.
- Gemini 3.1 Flash Lite accepts more context: 1.05M tokens versus 256K.
Side by side
| Seed 2.0 Pro | Gemini 3.1 Flash Lite | |
|---|---|---|
| Provider | ByteDance Seed | |
| Noometry Index | 43.2 | 40.8 |
| Released | 2026-02-14 | 2026-03-03 |
| Weights | Proprietary | Proprietary |
| Context window | 256K | 1.05M |
| Max output | 128K | 66K |
| Input $ / M tokens | $0.50 | $0.25 |
| Output $ / M tokens | $3 | $1.50 |
| Results tracked | 20 | 38 |
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Category by category
Coding Seed 2.0 Pro leads
Seed 2.0 Pro: 43.5 (#86), Gemini 3.1 Flash Lite: 37.8 (#188)
| Benchmark | Seed 2.0 Pro | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Coding | 1472 | 1400 |
| LMArena WebDev | — | 1256 |
| SciCode | — | 41.9% |
| WeirdML | — | 52.2% |
| ALE-Bench | — | 797.73 |
Agentic & Tool Use Not comparable
Seed 2.0 Pro: —, Gemini 3.1 Flash Lite: 30.2 (#79)
| Benchmark | Seed 2.0 Pro | Gemini 3.1 Flash Lite |
|---|---|---|
| DeepResearch Bench | — | 37.3% |
Reasoning Seed 2.0 Pro leads
Seed 2.0 Pro: 24.1 (#165), Gemini 3.1 Flash Lite: 22.9 (#186)
| Benchmark | Seed 2.0 Pro | Gemini 3.1 Flash Lite |
|---|---|---|
| NYT Connections (extended) | 28.4% | 8.2% |
| Thematic Generalization | 57.1% | 63.3% |
| LMArena Hard Prompts | 1453 | 1407 |
| Kagi LLM Benchmark | — | 67.2% |
| CritPt | — | 1.1% |
| Chess Puzzles | — | 25% |
| EnigmaEval | — | 3% |
| DTBench | — | 76.8% |
| LMCA | — | 35% |
| Epoch Capabilities Index | — | 144.47 |
| ForecastBench | — | 54.4 |
Math Gemini 3.1 Flash Lite leads
Seed 2.0 Pro: 39.3 (#108), Gemini 3.1 Flash Lite: 40.7 (#90)
| Benchmark | Seed 2.0 Pro | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Math | 1439 | 1428 |
| FrontierMath (Tiers 1-3) | — | 27.7% |
| OTIS Mock AIME 2024-2025 | — | 80% |
Knowledge Gemini 3.1 Flash Lite leads
Seed 2.0 Pro: 40.2 (#122), Gemini 3.1 Flash Lite: 41.9 (#104)
| Benchmark | Seed 2.0 Pro | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Expert | 1440 | 1398 |
| GPQA Diamond | — | 81.8% |
| Humanity's Last Exam | — | 8.6% |
| Vectara Hallucination Rate | — | 8.2% |
Multimodal Seed 2.0 Pro leads
Seed 2.0 Pro: 41.5 (#35), Gemini 3.1 Flash Lite: 39.4 (#60)
| Benchmark | Seed 2.0 Pro | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Vision | 1274 | 1240 |
Multilingual Seed 2.0 Pro leads
Seed 2.0 Pro: 54.5 (#39), Gemini 3.1 Flash Lite: 52.3 (#86)
| Benchmark | Seed 2.0 Pro | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Non-English | 1441 | 1411 |
| LMArena Chinese | 1489 | 1461 |
| LMArena French | 1471 | 1424 |
| LMArena German | 1442 | 1429 |
| LMArena Japanese | 1408 | 1413 |
| LMArena Korean | 1411 | 1392 |
| LMArena Russian | 1449 | 1420 |
| LMArena Spanish | 1460 | 1421 |
Instruction Following Seed 2.0 Pro leads
Seed 2.0 Pro: 74.5 (#91), Gemini 3.1 Flash Lite: 72.7 (#131)
| Benchmark | Seed 2.0 Pro | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Instruction Following | 1414 | 1377 |
Long Context Seed 2.0 Pro leads
Seed 2.0 Pro: 43.6 (#90), Gemini 3.1 Flash Lite: 42.5 (#122)
| Benchmark | Seed 2.0 Pro | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Longer Query | 1428 | 1394 |
Writing & Preference Seed 2.0 Pro leads
Seed 2.0 Pro: 62.9 (#69), Gemini 3.1 Flash Lite: 60.9 (#94)
| Benchmark | Seed 2.0 Pro | Gemini 3.1 Flash Lite |
|---|---|---|
| LMArena Text | 1448 | 1416 |
| LMArena Creative Writing | 1406 | 1401 |
| LMArena Multi-Turn | 1441 | 1417 |
Frequently asked questions
Is Seed 2.0 Pro better than Gemini 3.1 Flash Lite?
Seed 2.0 Pro is the stronger model overall, scoring 43.2 to 40.8 on the Noometry Index. Gemini 3.1 Flash Lite costs 2.0× less per token, which makes it the better buy when Seed 2.0 Pro's lead doesn't matter for your workload.
Which is cheaper, Seed 2.0 Pro or Gemini 3.1 Flash Lite?
Gemini 3.1 Flash Lite is cheaper. It lists at $0.25 per million input tokens and $1.50 per million output tokens; Seed 2.0 Pro lists at $0.50 and $3.
Is Seed 2.0 Pro or Gemini 3.1 Flash Lite better for coding?
Seed 2.0 Pro scores higher on coding benchmarks: 43.5 versus 37.8 in the Noometry coding category.
Which has the bigger context window?
Gemini 3.1 Flash Lite does, with 1.05M tokens against 256K.
How many benchmarks do Seed 2.0 Pro and Gemini 3.1 Flash Lite share?
20 benchmarks have published results for both models. Seed 2.0 Pro has 20 scored results on Noometry and Gemini 3.1 Flash Lite has 38.