# Claude 4.1 Opus vs Gemini 3 Flash

> Side-by-side benchmark comparison for Claude 4.1 Opus and Gemini 3 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-4-1-opus-vs-gemini-3-flash
- Last updated: September 22, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude 4.1 Opus and Gemini 3 Flash share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Gemini 3 Flash has the lower published output-token price.
- Gemini 3 Flash has the larger published context window at 1M.

## Model Snapshot

| Property | Claude 4.1 Opus | Gemini 3 Flash |
|----------|----------|----------|
| Creator | Anthropic | Google |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 200K | 1M |
| Independent public score (not head-to-head) | 42.01 | 62.45 |
| Benchmarks Covered | 2 | 11 |
| Pricing (input/output) | $15.00 / $75.00 | $0.50 / $3.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude 4.1 Opus public-lane score: 43.1 (Estimated · #107/157)
- Gemini 3 Flash public-lane score: 35.8 (Supported · #138/157)

| Benchmark | Claude 4.1 Opus | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| JobBench | 21.9% | 11.4% | Claude 4.1 Opus |
| Claw-Eval | Coming soon | 49.2% | Coming soon |
| Gert Labs | Coming soon | 56.63% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 53.9% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude 4.1 Opus public-lane score: 43.1 (Estimated · #110/159)
- Gemini 3 Flash public-lane score: 42.5 (Supported · #112/159)

| Benchmark | Claude 4.1 Opus | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 74.5% | Coming soon | Coming soon |
| Vibe Code Bench | Coming soon | 20.20% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 85.6% | Coming soon |
| SWE-bench (Vals) | Coming soon | 75.0% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude 4.1 Opus public-lane score: Coming soon
- Gemini 3 Flash public-lane score: 59 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude 4.1 Opus public-lane score: Coming soon
- Gemini 3 Flash public-lane score: 75.8 (Unranked · 1 rankable row)

### Knowledge

- Winner: Insufficient shared evidence
- Claude 4.1 Opus public-lane score: Coming soon
- Gemini 3 Flash public-lane score: 57.5 (Supported · #47/189)

| Benchmark | Claude 4.1 Opus | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | Coming soon | 87.9% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 88.6% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude 4.1 Opus public-lane score: Coming soon
- Gemini 3 Flash public-lane score: 64.7 (#70/124)

### Mathematics

- Winner: Insufficient shared evidence
- Claude 4.1 Opus public-lane score: Coming soon
- Gemini 3 Flash public-lane score: 50 (Unranked · 2 rankable rows)

| Benchmark | Claude 4.1 Opus | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 35.640% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 4.167% | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude 4.1 Opus and Gemini 3 Flash?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Claude 4.1 Opus vs Claude 4.1 Opus Thinking](/compare/claude-4-1-opus-vs-claude-4-1-opus-thinking)
- [Gemini 3 Flash vs Claude 4.1 Opus Thinking](/compare/claude-4-1-opus-thinking-vs-gemini-3-flash)
- [Claude 4.1 Opus vs Claude Fable 5.1](/compare/claude-4-1-opus-vs-claude-fable-5-1)
- [Gemini 3 Flash vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gemini-3-flash)

## Explore More

- [Claude 4.1 Opus profile](/models/claude-4-1-opus)
- [Gemini 3 Flash profile](/models/gemini-3-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)