# GPT-5.4 vs Seed 2.1 Turbo

> Side-by-side benchmark comparison for GPT-5.4 and Seed 2.1 Turbo across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-4-vs-seed-2-1-turbo
- Last updated: September 10, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick GPT-5.4 if you want the stronger benchmark profile. Seed 2.1 Turbo only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- GPT-5.4 leads overall 70.85 to 0.
- The biggest single benchmark swing is ZeroBench in Multimodal & Grounded, with scores of 41.0% and 11.0%.
- Seed 2.1 Turbo is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GPT-5.4 also has the larger context window at 1.05M.

## Model Snapshot

| Property | GPT-5.4 | Seed 2.1 Turbo |
|----------|----------|----------|
| Creator | OpenAI | ByteDance |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1.05M | 256K |
| Overall Score | 70.85 | null |
| Benchmarks Covered | 37 | 11 |
| Pricing (input/output) | $2.50 / $15.00 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Coming soon
- GPT-5.4 public-lane score: 52.5 (Supported · #40/152)
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | GPT-5.4 | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 75.1% | Coming soon | Coming soon |
| CyberGym | 79.0% | Coming soon | Coming soon |
| BrowseComp | 82.7% | Coming soon | Coming soon |
| OSWorld-Verified | 75% | Coming soon | Coming soon |
| MCP Atlas | 70.6% | Coming soon | Coming soon |
| Toolathlon | 54.6% | Coming soon | Coming soon |
| τ²-bench results | 98.9% | Coming soon | Coming soon |
| Claw-Eval | 60.3% | Coming soon | Coming soon |
| DeepSearchQA | 73.6% | Coming soon | Coming soon |
| Gert Labs | 64.89% | Coming soon | Coming soon |
| ResearchClawBench | 15.3% | Coming soon | Coming soon |
| JobBench | 38.9% | Coming soon | Coming soon |
| ExploitGym | 6.0% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 67.6% | Coming soon |

### Coding

- Winner: Coming soon
- GPT-5.4 public-lane score: 53.9 (Supported · #42/151)
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | GPT-5.4 | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pro | 87.5% | Coming soon | Coming soon |
| SWE-bench Pro | 57.7% | Coming soon | Coming soon |
| React Native Evals | 85.3% | Coming soon | Coming soon |
| Vibe Code Bench | 67.42% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 67.6% | Coming soon |
| NL2Repo | Coming soon | 43.7% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- GPT-5.4 public-lane score: 69.3 (#20/48)
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | GPT-5.4 | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 81.2% | 80.1% | GPT-5.4 |
| OfficeQA Pro | 53.2% | Coming soon | Coming soon |
| MMMU-Pro w/ Python | 82.1% | Coming soon | Coming soon |
| CharXiv | 82.8% | 82.5% | GPT-5.4 |
| ERQA | 65.4% | 71.3% | Seed 2.1 Turbo |
| SimpleVQA | 61.1% | Coming soon | Coming soon |
| ScreenSpot Pro | 85.4% | Coming soon | Coming soon |
| ZeroBench | 41.0% | 11.0% | GPT-5.4 |
| MedXpertQA (MM) | 77.1% | Coming soon | Coming soon |
| MathVision | Coming soon | 90.1% | Coming soon |
| BabyVision | Coming soon | 62.9% | Coming soon |
| Video-MME | Coming soon | 89.0% | Coming soon |

### Reasoning

- Winner: Coming soon
- GPT-5.4 public-lane score: 57.2 (#17/20)
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | GPT-5.4 | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 74.0% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.2% | Coming soon | Coming soon |

### Knowledge

- Winner: Coming soon
- GPT-5.4 public-lane score: 69.2 (Supported · #15/183)
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | GPT-5.4 | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.8% | Coming soon | Coming soon |
| HLE | 52.1% | Coming soon | Coming soon |
| HLE w/o tools | 39.8% | Coming soon | Coming soon |
| GPQA-D | 92.8% | Coming soon | Coming soon |
| HealthBench Hard | 40.1% | Coming soon | Coming soon |
| MedXpertQA (Text) | 59.6% | Coming soon | Coming soon |
| HealthBench Professional | 48.1% | Coming soon | Coming soon |
| SuperGPQA | Coming soon | 67.4% | Coming soon |

### Instruction Following

- Winner: Coming soon
- GPT-5.4 public-lane score: 90.6 (#19/123)
- Seed 2.1 Turbo public-lane score: Coming soon

### Mathematics

- Winner: Coming soon
- GPT-5.4 public-lane score: 64.5 (Unranked · 2 rankable rows)
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | GPT-5.4 | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 47.600% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 27.100% | Coming soon | Coming soon |

## FAQ

### Which is better overall, GPT-5.4 or Seed 2.1 Turbo?

GPT-5.4 is ahead overall on BenchLM right now.

### How many benchmarks does GPT-5.4 cover on BenchLM?

GPT-5.4 currently has 37 sourced benchmark scores on BenchLM.

### How many benchmarks does Seed 2.1 Turbo cover on BenchLM?

Seed 2.1 Turbo currently has 11 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GPT-5.4 vs GPT-5.4 mini](/compare/gpt-5-4-vs-gpt-5-4-mini)
- [Seed 2.1 Turbo vs GPT-5.4 mini](/compare/gpt-5-4-mini-vs-seed-2-1-turbo)
- [GPT-5.4 vs GPT-5.4 Pro](/compare/gpt-5-4-vs-gpt-5-4-pro)
- [Seed 2.1 Turbo vs GPT-5.4 Pro](/compare/gpt-5-4-pro-vs-seed-2-1-turbo)

## Explore More

- [GPT-5.4 profile](/models/gpt-5-4)
- [Seed 2.1 Turbo profile](/models/seed-2-1-turbo)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)