Model comparison
Claude Haiku 4.5 vs Seed 2.0 Pro
Seed 2.0 Pro is the stronger model overall, scoring 43.2 to 39.5 on the Noometry Index.
Last verified . 18 shared benchmarks.
ByteDance SeedSummary
- They share 18 benchmarks with published results for both. Claude Haiku 4.5 scores higher in 2 categories and Seed 2.0 Pro in 7 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in multimodal, where Seed 2.0 Pro leads 41.5 to 26.8.
- The biggest single-benchmark swing is NYT Connections (extended): 14.3% for Claude Haiku 4.5 and 28.4% for Seed 2.0 Pro.
- Seed 2.0 Pro is cheaper at $0.50 / $3 per million input/output tokens, against $1 / $5 for Claude Haiku 4.5.
- Seed 2.0 Pro accepts more context: 256K tokens versus 200K.
Side by side
| Claude Haiku 4.5 | Seed 2.0 Pro | |
|---|---|---|
| Provider | Anthropic | ByteDance Seed |
| Noometry Index | 39.5 | 43.2 |
| Released | 2025-10-15 | 2026-02-14 |
| Weights | Proprietary | Proprietary |
| Context window | 200K | 256K |
| Max output | 64K | 128K |
| Input $ / M tokens | $1 | $0.50 |
| Output $ / M tokens | $5 | $3 |
| Results tracked | 53 | 20 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Too close to call
Claude Haiku 4.5: 44.0 (#78), Seed 2.0 Pro: 43.5 (#86)
| Benchmark | Claude Haiku 4.5 | Seed 2.0 Pro |
|---|---|---|
| LMArena Coding | 1453 | 1472 |
| SWE-bench Verified (bash only) | 66.6% | — |
| LMArena WebDev | 1330 | — |
| SWE-bench Multilingual | 64.7% | — |
| SciCode | 43.3% | — |
| WeirdML | 45.4% | — |
| ALE-Bench | 653.48 | — |
Agentic & Tool Use Not comparable
Claude Haiku 4.5: 33.6 (#52), Seed 2.0 Pro: —
| Benchmark | Claude Haiku 4.5 | Seed 2.0 Pro |
|---|---|---|
| Terminal-Bench | 35.5% | — |
| Berkeley Function Calling Leaderboard | 68.7% | — |
| DeepResearch Bench | 45.5% | — |
| BALROG | 31.2% | — |
| ExploitBench | 13.7% | — |
| Vending-Bench 2 | 458.89 | — |
Reasoning Seed 2.0 Pro leads
Claude Haiku 4.5: 15.1 (#320), Seed 2.0 Pro: 24.1 (#165)
| Benchmark | Claude Haiku 4.5 | Seed 2.0 Pro |
|---|---|---|
| NYT Connections (extended) | 14.3% | 28.4% |
| LMArena Hard Prompts | 1420 | 1453 |
| ARC-AGI-2 | 4% | — |
| ARC-AGI-1 | 47.7% | — |
| CritPt | 0% | — |
| Chess Puzzles | 8% | — |
| Thematic Generalization | — | 57.1% |
| DTBench | 73.6% | — |
| LMCA | 30.9% | — |
| Epoch Capabilities Index | 142.41 | — |
| ForecastBench | 61.4 | — |
Math Claude Haiku 4.5 leads
Claude Haiku 4.5: 44.9 (#78), Seed 2.0 Pro: 39.3 (#108)
| Benchmark | Claude Haiku 4.5 | Seed 2.0 Pro |
|---|---|---|
| LMArena Math | 1396 | 1439 |
| OTIS Mock AIME 2024-2025 | 66.7% | — |
| Omni-MATH | 56.1% | — |
| MATH Level 5 | 96.4% | — |
| FrontierMath (Feb 2025 set) | 5.9% | — |
| FrontierMath Tier 4 (v1) | 2.1% | — |
Knowledge Seed 2.0 Pro leads
Claude Haiku 4.5: 37.7 (#153), Seed 2.0 Pro: 40.2 (#122)
| Benchmark | Claude Haiku 4.5 | Seed 2.0 Pro |
|---|---|---|
| LMArena Expert | 1442 | 1440 |
| GPQA Diamond | 71.2% | — |
| SimpleQA Verified | 13.2% | — |
| MMLU-Pro | 77.7% | — |
| Vectara Hallucination Rate | 9.8% | — |
| GPQA (HELM) | 60.5% | — |
Multimodal Seed 2.0 Pro leads
Claude Haiku 4.5: 26.8 (#118), Seed 2.0 Pro: 41.5 (#35)
| Benchmark | Claude Haiku 4.5 | Seed 2.0 Pro |
|---|---|---|
| LMArena Vision | — | 1274 |
| Blueprint-Bench 2 | 0% | — |
| LMArena Document | 1420 | — |
Multilingual Seed 2.0 Pro leads
Claude Haiku 4.5: 49.9 (#129), Seed 2.0 Pro: 54.5 (#39)
| Benchmark | Claude Haiku 4.5 | Seed 2.0 Pro |
|---|---|---|
| LMArena Non-English | 1377 | 1441 |
| LMArena Chinese | 1417 | 1489 |
| LMArena French | 1408 | 1471 |
| LMArena German | 1375 | 1442 |
| LMArena Japanese | 1339 | 1408 |
| LMArena Korean | 1347 | 1411 |
| LMArena Russian | 1381 | 1449 |
| LMArena Spanish | 1420 | 1460 |
Instruction Following Seed 2.0 Pro leads
Claude Haiku 4.5: 71.4 (#149), Seed 2.0 Pro: 74.5 (#91)
| Benchmark | Claude Haiku 4.5 | Seed 2.0 Pro |
|---|---|---|
| LMArena Instruction Following | 1414 | 1414 |
| IFEval | 80.1% | — |
Long Context Too close to call
Claude Haiku 4.5: 43.6 (#92), Seed 2.0 Pro: 43.6 (#90)
| Benchmark | Claude Haiku 4.5 | Seed 2.0 Pro |
|---|---|---|
| LMArena Longer Query | 1427 | 1428 |
Writing & Preference Seed 2.0 Pro leads
Claude Haiku 4.5: 57.9 (#123), Seed 2.0 Pro: 62.9 (#69)
| Benchmark | Claude Haiku 4.5 | Seed 2.0 Pro |
|---|---|---|
| LMArena Text | 1396 | 1448 |
| LMArena Creative Writing | 1372 | 1406 |
| LMArena Multi-Turn | 1409 | 1441 |
| WildBench | 83.9% | — |
| EQ-Bench 4 | 1064 | — |
Frequently asked questions
Is Claude Haiku 4.5 better than Seed 2.0 Pro?
Seed 2.0 Pro is the stronger model overall, scoring 43.2 to 39.5 on the Noometry Index.
Which is cheaper, Claude Haiku 4.5 or Seed 2.0 Pro?
Seed 2.0 Pro is cheaper. It lists at $0.50 per million input tokens and $3 per million output tokens; Claude Haiku 4.5 lists at $1 and $5.
Is Claude Haiku 4.5 or Seed 2.0 Pro better for coding?
They score almost the same on coding (44.0 vs 43.5); test both on your own repository before choosing.
Which has the bigger context window?
Seed 2.0 Pro does, with 256K tokens against 200K.
How many benchmarks do Claude Haiku 4.5 and Seed 2.0 Pro share?
18 benchmarks have published results for both models. Claude Haiku 4.5 has 53 scored results on Noometry and Seed 2.0 Pro has 20.