Model comparison
Seed 2.0 Pro vs GPT-5 Mini
Seed 2.0 Pro is the stronger model overall, scoring 43.2 to 41.8 on the Noometry Index. GPT-5 Mini costs 1.6× less per token, which makes it the better buy when Seed 2.0 Pro's lead doesn't matter for your workload.
Last verified . 18 shared benchmarks.
ByteDance SeedSummary
- They share 18 benchmarks with published results for both. Seed 2.0 Pro scores higher in 6 categories and GPT-5 Mini in 3 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Seed 2.0 Pro leads 62.9 to 55.2.
- GPT-5 Mini is cheaper at $0.25 / $2 per million input/output tokens, against $0.50 / $3 for Seed 2.0 Pro.
- GPT-5 Mini accepts more context: 400K tokens versus 256K.
Side by side
| Seed 2.0 Pro | GPT-5 Mini | |
|---|---|---|
| Provider | ByteDance Seed | OpenAI |
| Noometry Index | 43.2 | 41.8 |
| Released | 2026-02-14 | 2025-08-07 |
| Weights | Proprietary | Proprietary |
| Context window | 256K | 400K |
| Max output | 128K | 128K |
| Input $ / M tokens | $0.50 | $0.25 |
| Output $ / M tokens | $3 | $2 |
| Results tracked | 20 | 60 |
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Category by category
Coding Seed 2.0 Pro leads
Seed 2.0 Pro: 43.5 (#86), GPT-5 Mini: 40.1 (#146)
| Benchmark | Seed 2.0 Pro | GPT-5 Mini |
|---|---|---|
| LMArena Coding | 1472 | 1406 |
| SWE-bench Verified | — | 64.7% |
| SWE-bench Verified (bash only) | — | 59.8% |
| SWE-bench Multilingual | — | 39.7% |
| SciCode | — | 39.2% |
| WeirdML | — | 52.7% |
| ALE-Bench | — | 799.77 |
| AlgoTune | — | 1.38 |
Agentic & Tool Use Not comparable
Seed 2.0 Pro: —, GPT-5 Mini: 31.1 (#70)
| Benchmark | Seed 2.0 Pro | GPT-5 Mini |
|---|---|---|
| Terminal-Bench | — | 34.8% |
| Berkeley Function Calling Leaderboard | — | 55.5% |
| Vending-Bench 2 | — | -31.18 |
Reasoning Too close to call
Seed 2.0 Pro: 24.1 (#165), GPT-5 Mini: 23.9 (#168)
| Benchmark | Seed 2.0 Pro | GPT-5 Mini |
|---|---|---|
| LMArena Hard Prompts | 1453 | 1380 |
| ARC-AGI-2 | — | 4.4% |
| Kagi LLM Benchmark | — | 70.3% |
| NYT Connections (extended) | 28.4% | — |
| ARC-AGI-1 | — | 54.3% |
| CritPt | — | 0% |
| Chess Puzzles | — | 30% |
| EnigmaEval | — | 8.2% |
| Thematic Generalization | 57.1% | — |
| Mystery Game Puzzles | — | 10% |
| DTBench | — | 80.5% |
| LMCA | — | 34.2% |
| Epoch Capabilities Index | — | 145.52 |
| ForecastBench | — | 61 |
Math GPT-5 Mini leads
Seed 2.0 Pro: 39.3 (#108), GPT-5 Mini: 46.7 (#69)
| Benchmark | Seed 2.0 Pro | GPT-5 Mini |
|---|---|---|
| LMArena Math | 1439 | 1378 |
| FrontierMath (Tiers 1-3) | — | 46.7% |
| FrontierMath Tier 4 | — | 12.2% |
| OTIS Mock AIME 2024-2025 | — | 86.7% |
| ProofBench | — | 9% |
| Omni-MATH | — | 72.2% |
| MATH Level 5 | — | 97.8% |
| FrontierMath (Feb 2025 set) | — | 27.2% |
| FrontierMath Tier 4 (v1) | — | 6.3% |
Knowledge GPT-5 Mini leads
Seed 2.0 Pro: 40.2 (#122), GPT-5 Mini: 45.6 (#86)
| Benchmark | Seed 2.0 Pro | GPT-5 Mini |
|---|---|---|
| LMArena Expert | 1440 | 1379 |
| GPQA Diamond | — | 75% |
| Humanity's Last Exam | — | 19.4% |
| SimpleQA Verified | — | 21.6% |
| MMLU-Pro | — | 83.5% |
| Confabulations | — | 13.3% |
| Vectara Hallucination Rate | — | 12.9% |
| GPQA (HELM) | — | 75.6% |
Multimodal Seed 2.0 Pro leads
Seed 2.0 Pro: 41.5 (#35), GPT-5 Mini: 35.6 (#85)
| Benchmark | Seed 2.0 Pro | GPT-5 Mini |
|---|---|---|
| LMArena Vision | 1274 | 1202 |
| VPCT | — | 40.2% |
Multilingual Seed 2.0 Pro leads
Seed 2.0 Pro: 54.5 (#39), GPT-5 Mini: 48.9 (#137)
| Benchmark | Seed 2.0 Pro | GPT-5 Mini |
|---|---|---|
| LMArena Non-English | 1441 | 1363 |
| LMArena Chinese | 1489 | 1385 |
| LMArena French | 1471 | 1386 |
| LMArena German | 1442 | 1366 |
| LMArena Japanese | 1408 | 1341 |
| LMArena Korean | 1411 | 1308 |
| LMArena Russian | 1449 | 1362 |
| LMArena Spanish | 1460 | 1355 |
Instruction Following GPT-5 Mini leads
Seed 2.0 Pro: 74.5 (#91), GPT-5 Mini: 76.2 (#46)
| Benchmark | Seed 2.0 Pro | GPT-5 Mini |
|---|---|---|
| LMArena Instruction Following | 1414 | 1357 |
| IFEval | — | 92.7% |
Long Context Seed 2.0 Pro leads
Seed 2.0 Pro: 43.6 (#90), GPT-5 Mini: 41.9 (#132)
| Benchmark | Seed 2.0 Pro | GPT-5 Mini |
|---|---|---|
| LMArena Longer Query | 1428 | 1355 |
| Fiction.LiveBench | — | 69.4% |
Writing & Preference Seed 2.0 Pro leads
Seed 2.0 Pro: 62.9 (#69), GPT-5 Mini: 55.2 (#148)
| Benchmark | Seed 2.0 Pro | GPT-5 Mini |
|---|---|---|
| LMArena Text | 1448 | 1373 |
| LMArena Creative Writing | 1406 | 1325 |
| LMArena Multi-Turn | 1441 | 1363 |
| Short-Story Creative Writing | — | 83.1% |
| EQ-Bench Creative Writing | — | 1313 |
| WildBench | — | 85.5% |
Frequently asked questions
Is Seed 2.0 Pro better than GPT-5 Mini?
Seed 2.0 Pro is the stronger model overall, scoring 43.2 to 41.8 on the Noometry Index. GPT-5 Mini costs 1.6× 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 GPT-5 Mini?
GPT-5 Mini is cheaper. It lists at $0.25 per million input tokens and $2 per million output tokens; Seed 2.0 Pro lists at $0.50 and $3.
Is Seed 2.0 Pro or GPT-5 Mini better for coding?
Seed 2.0 Pro scores higher on coding benchmarks: 43.5 versus 40.1 in the Noometry coding category.
Which has the bigger context window?
GPT-5 Mini does, with 400K tokens against 256K.
How many benchmarks do Seed 2.0 Pro and GPT-5 Mini share?
18 benchmarks have published results for both models. Seed 2.0 Pro has 20 scored results on Noometry and GPT-5 Mini has 60.