# Claude Opus 4.8 vs Gemini 3.5 Flash-Lite

> Side-by-side benchmark comparison for Claude Opus 4.8 and Gemini 3.5 Flash-Lite across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-4-8-vs-gemini-3-5-flash-lite
- Last updated: September 4, 2026

- Shared sourced benchmarks: 9
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Claude Opus 4.8 if you want the stronger benchmark profile. Gemini 3.5 Flash-Lite only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Claude Opus 4.8 leads overall 72.3 to 60.5.
- The clearest category separation is in coding, where the averages are 66.5 for Claude Opus 4.8 and 43.6 for Gemini 3.5 Flash-Lite.
- The biggest single benchmark swing is Terminal-Bench 2.1 (Vals) in Agentic, with scores of 71.9% and 50.2%.
- Gemini 3.5 Flash-Lite is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Claude Opus 4.8 | Gemini 3.5 Flash-Lite |
|----------|----------|----------|
| Creator | Anthropic | Google |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 72.3 | 60.5 |
| Benchmarks Covered | 38 | 10 |
| Pricing (input/output) | $5.00 / $25.00 | $0.30 / $2.50 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Claude Opus 4.8 public-lane score: 63.2 (Supported · #16/151)
- Gemini 3.5 Flash-Lite public-lane score: 43.4 (Estimated · #104/151)

| Benchmark | Claude Opus 4.8 | Gemini 3.5 Flash-Lite | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 21.1% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 74.6% | 54% | Claude Opus 4.8 |
| BrowseComp | 84.3% | Coming soon | Coming soon |
| DeepSearchQA | 93.1% | Coming soon | Coming soon |
| OSWorld-Verified | 83.4% | 74% | Claude Opus 4.8 |
| Finance Agent v2 | 53.9% | Coming soon | Coming soon |
| MCP Atlas | 82.2% | Coming soon | Coming soon |
| Toolathlon | 59.9% | Coming soon | Coming soon |
| Gert Labs | 72.97% | Coming soon | Coming soon |
| ResearchClawBench | 21.1% | Coming soon | Coming soon |
| OSWorld 2.0 | 20.6% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 71.9% | 50.2% | Claude Opus 4.8 |

### Coding

- Winner: Claude Opus 4.8
- Claude Opus 4.8 public-lane score: 66.5 (Supported · #12/183)
- Gemini 3.5 Flash-Lite public-lane score: 43.6 (Supported · #121/183)

| Benchmark | Claude Opus 4.8 | Gemini 3.5 Flash-Lite | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 88.6% | Coming soon | Coming soon |
| SWE-bench Pro | 69.2% | 54.2% | Claude Opus 4.8 |
| SWE Multilingual | 84.4% | Coming soon | Coming soon |
| SWE Multimodal | 38.4% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 74.6% | 54.0% | Claude Opus 4.8 |
| cursorBench31 | 58.4% | Coming soon | Coming soon |
| cursorBench32 | 62.3% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 46.5% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 87.8% | 79.0% | Claude Opus 4.8 |
| SWE-bench (Vals) | 88.6% | 75.0% | Claude Opus 4.8 |

### Multimodal & Grounded

- Winner: Coming soon
- Claude Opus 4.8 public-lane score: 87.5 (#3/48)
- Gemini 3.5 Flash-Lite public-lane score: 76.1 (#16/48)

| Benchmark | Claude Opus 4.8 | Gemini 3.5 Flash-Lite | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | 66.2% | Coming soon | Coming soon |
| ScreenSpot Pro | 87.9% | Coming soon | Coming soon |
| CharXiv | 89.9% | Coming soon | Coming soon |
| CharXiv w/o tools | 80.5% | Coming soon | Coming soon |

### Reasoning

- Winner: Coming soon
- Claude Opus 4.8 public-lane score: 55.1 (#20/22)
- Gemini 3.5 Flash-Lite public-lane score: 60.8 (Unranked · 3 rankable rows)

| Benchmark | Claude Opus 4.8 | Gemini 3.5 Flash-Lite | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 72.1% | Coming soon | Coming soon |
| ARC-AGI-3 | 1.5% | Coming soon | Coming soon |
| MRCRv2 | Coming soon | 72.2% | Coming soon |

### Knowledge

- Winner: Claude Opus 4.8
- Claude Opus 4.8 public-lane score: 71.7 (Supported · #9/181)
- Gemini 3.5 Flash-Lite public-lane score: 53 (Supported · #71/181)

| Benchmark | Claude Opus 4.8 | Gemini 3.5 Flash-Lite | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 93.6% | Coming soon | Coming soon |
| GPQA-D | 93.6% | Coming soon | Coming soon |
| HLE | 57.9% | Coming soon | Coming soon |
| HLE w/o tools | 49.8% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 92.4% | 83.8% | Claude Opus 4.8 |
| MMLU-Pro (Vals) | 89.6% | 85.8% | Claude Opus 4.8 |

### Instruction Following

- Winner: Coming soon
- Claude Opus 4.8 public-lane score: 75.2 (#59/120)
- Gemini 3.5 Flash-Lite public-lane score: Coming soon

### Multilingual

- Winner: Coming soon
- Claude Opus 4.8 public-lane score: Coming soon
- Gemini 3.5 Flash-Lite public-lane score: Coming soon

| Benchmark | Claude Opus 4.8 | Gemini 3.5 Flash-Lite | Winner |
|-----------|-----------|-----------|--------|
| INCLUDE | 87.6% | Coming soon | Coming soon |

### Mathematics

- Winner: Coming soon
- Claude Opus 4.8 public-lane score: 65.4 (#2/7)
- Gemini 3.5 Flash-Lite public-lane score: Coming soon

| Benchmark | Claude Opus 4.8 | Gemini 3.5 Flash-Lite | Winner |
|-----------|-----------|-----------|--------|
| USAMO 2026 | 96.7% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 47.241% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 31.250% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Claude Opus 4.8 or Gemini 3.5 Flash-Lite?

Claude Opus 4.8 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Opus 4.8 and Gemini 3.5 Flash-Lite?

The widest category gap is in coding, where the averages are 66.5 for Claude Opus 4.8 and 43.6 for Gemini 3.5 Flash-Lite.

### How many benchmarks does Claude Opus 4.8 cover on BenchLM?

Claude Opus 4.8 currently has 38 sourced benchmark scores on BenchLM.

### How many benchmarks does Gemini 3.5 Flash-Lite cover on BenchLM?

Gemini 3.5 Flash-Lite currently has 10 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Opus 4.8 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-claude-opus-4-8)
- [Gemini 3.5 Flash-Lite vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gemini-3-5-flash-lite)
- [Claude Opus 4.8 vs GPT-6 Astra](/compare/claude-opus-4-8-vs-gpt-6-astra)
- [Gemini 3.5 Flash-Lite vs GPT-6 Astra](/compare/gemini-3-5-flash-lite-vs-gpt-6-astra)

## Explore More

- [Claude Opus 4.8 profile](/models/claude-opus-4-8)
- [Gemini 3.5 Flash-Lite profile](/models/gemini-3-5-flash-lite)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)