# Claude Opus 4.5 vs ZAYA1-8B

> Side-by-side benchmark comparison for Claude Opus 4.5 and ZAYA1-8B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-4-5-vs-zaya1-8b
- Last updated: September 18, 2026

- Shared sourced benchmarks: 7
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Claude Opus 4.5 if you want the stronger benchmark profile. ZAYA1-8B only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Claude Opus 4.5 leads overall 58.42 to 56.
- The clearest category separation is in knowledge, where the averages are 54 for Claude Opus 4.5 and 43.6 for ZAYA1-8B.
- The biggest single benchmark swing is LiveCodeBench v6 in Coding, with scores of 84.8% and 65.8%.
- ZAYA1-8B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Claude Opus 4.5 also has the larger context window at 200K.

## Model Snapshot

| Property | Claude Opus 4.5 | ZAYA1-8B |
|----------|----------|----------|
| Creator | Anthropic | Zyphra |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 131K |
| Overall Score | 58.42 | null |
| Benchmarks Covered | 45 | 11 |
| Pricing (input/output) | $5.00 / $25.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Claude Opus 4.5 public-lane score: 43.2 (Estimated · #102/154)
- ZAYA1-8B public-lane score: 46.1 (Estimated · #82/154)

| Benchmark | Claude Opus 4.5 | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 59.3% | Coming soon | Coming soon |
| OSWorld-Verified | 66.3% | Coming soon | Coming soon |
| OSWorld | 66.3% | Coming soon | Coming soon |
| Claw-Eval | 59.6% | Coming soon | Coming soon |
| QwenClawBench | 52.3% | Coming soon | Coming soon |
| τ³-bench results | 70.2% | Coming soon | Coming soon |
| VITA-Bench | 23.3% | Coming soon | Coming soon |
| DeepPlanning | 26.4% | Coming soon | Coming soon |
| Toolathlon | 43.5% | Coming soon | Coming soon |
| MCP Atlas | 42.3% | Coming soon | Coming soon |
| MCP-Tasks | 71.8% | Coming soon | Coming soon |
| WideResearch | 76.4% | Coming soon | Coming soon |
| CyberGym | 50.6% | Coming soon | Coming soon |
| Gert Labs | 64.23% | Coming soon | Coming soon |
| JobBench | 32.3% | Coming soon | Coming soon |
| BFCL v4 | Coming soon | 39.2% | Coming soon |

### Coding

- Winner: Coming soon
- Claude Opus 4.5 public-lane score: 56.7 (Estimated · #36/154)
- ZAYA1-8B public-lane score: Coming soon

| Benchmark | Claude Opus 4.5 | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 80.9% | Coming soon | Coming soon |
| LiveCodeBench v6 | 84.8% | 65.8% | Claude Opus 4.5 |
| SWE-bench Pro | 57.1% | Coming soon | Coming soon |
| SWE Multilingual | 77.5% | Coming soon | Coming soon |
| NL2Repo | 43.2% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Claude Opus 4.5 public-lane score: 23.5 (#46/48)
- ZAYA1-8B public-lane score: Coming soon

| Benchmark | Claude Opus 4.5 | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 70.6% | Coming soon | Coming soon |
| MathVision | 74.3% | Coming soon | Coming soon |
| CharXiv | 68.5% | Coming soon | Coming soon |
| VideoMMMU | 84.4% | Coming soon | Coming soon |
| ScreenSpot Pro | 45.7% | Coming soon | Coming soon |
| V* | 67.0% | Coming soon | Coming soon |

### Reasoning

- Winner: Coming soon
- Claude Opus 4.5 public-lane score: 72.1 (Unranked · 4 rankable rows)
- ZAYA1-8B public-lane score: Coming soon

| Benchmark | Claude Opus 4.5 | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | 64.4% | Coming soon | Coming soon |
| AI-Needle | 74% | Coming soon | Coming soon |

### Knowledge

- Winner: Coming soon
- Claude Opus 4.5 public-lane score: 54 (Estimated · #60/184)
- ZAYA1-8B public-lane score: 43.6 (Estimated · #120/184)

| Benchmark | Claude Opus 4.5 | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 87% | 71% | Claude Opus 4.5 |
| SuperGPQA | 70.6% | Coming soon | Coming soon |
| MMLU-Pro | 89.5% | 74.2% | Claude Opus 4.5 |
| MMLU-Redux | 96.6% | Coming soon | Coming soon |
| C-Eval | 92.2% | Coming soon | Coming soon |
| HLE | 30.8% | Coming soon | Coming soon |
| GPQA-D | Coming soon | 71.0% | Coming soon |

### Instruction Following

- Winner: Claude Opus 4.5
- Claude Opus 4.5 public-lane score: 30.6 (#114/124)
- ZAYA1-8B public-lane score: 23.5 (#121/124)

| Benchmark | Claude Opus 4.5 | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 90.9% | 85.6% | Claude Opus 4.5 |
| IFBench | 58% | 52.6% | Claude Opus 4.5 |

### Multilingual

- Winner: Coming soon
- Claude Opus 4.5 public-lane score: 82.9 (#2/12)
- ZAYA1-8B public-lane score: Coming soon

| Benchmark | Claude Opus 4.5 | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | 85.7% | Coming soon | Coming soon |
| NOVA-63 | 56.7% | Coming soon | Coming soon |

### Mathematics

- Winner: Coming soon
- Claude Opus 4.5 public-lane score: 57.9 (#6/7)
- ZAYA1-8B public-lane score: 61.3 (Unranked · 4 rankable rows)

| Benchmark | Claude Opus 4.5 | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 95.1% | 89.1% | Claude Opus 4.5 |
| HMMT Feb 2025 | 92.9% | Coming soon | Coming soon |
| HMMT Nov 2025 | 93.3% | Coming soon | Coming soon |
| HMMT Feb 2026 | 85.3% | 71.6% | Claude Opus 4.5 |
| MMAnswerBench | 84.0% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 20.690% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 4.167% | Coming soon | Coming soon |
| IMOAnswerBench | Coming soon | 59.3% | Coming soon |
| Apex | Coming soon | 32.2% | Coming soon |

## FAQ

### Which is better overall, Claude Opus 4.5 or ZAYA1-8B?

Claude Opus 4.5 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Opus 4.5 and ZAYA1-8B?

The widest category gap is in knowledge, where the averages are 54 for Claude Opus 4.5 and 43.6 for ZAYA1-8B.

### How many benchmarks does Claude Opus 4.5 cover on BenchLM?

Claude Opus 4.5 currently has 45 sourced benchmark scores on BenchLM.

### How many benchmarks does ZAYA1-8B cover on BenchLM?

ZAYA1-8B currently has 11 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Opus 4.5 vs Claude Opus 4.5 Thinking](/compare/claude-opus-4-5-vs-claude-opus-4-5-thinking)
- [ZAYA1-8B vs Claude Opus 4.5 Thinking](/compare/claude-opus-4-5-thinking-vs-zaya1-8b)
- [Claude Opus 4.5 vs ZAYA1-74B-Preview](/compare/claude-opus-4-5-vs-zaya1-74b-preview)
- [ZAYA1-8B vs ZAYA1-74B-Preview](/compare/zaya1-74b-preview-vs-zaya1-8b)

## Explore More

- [Claude Opus 4.5 profile](/models/claude-opus-4-5)
- [ZAYA1-8B profile](/models/zaya1-8b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)