# Mercury 2.5 vs Beam

> Side-by-side benchmark comparison for Mercury 2.5 and Beam across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/mercury-2-5-vs-reflection-beam
- Last updated: October 5, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Mercury 2.5 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Mercury 2.5 has the higher overall point estimate 35.2 to 0. Conditional score ranges do not establish rank confidence.
- The biggest single benchmark swing is DeepSearchQA in Agentic, with scores of 34.0% and 80.1%.
- Beam is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Mercury 2.5 also has the larger context window at 260K.

## Model Snapshot

| Property | Mercury 2.5 | Beam |
|----------|----------|----------|
| Creator | Inception | Reflection AI |
| Type | Proprietary | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | 260K | null |
| Overall Score | 35.2 | null |
| Benchmarks Covered | 6 | 16 |
| Pricing (input/output) | $0.04 / $0.15 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Mercury 2.5 public-lane score: 11.4 (Supported · #109/119)
- Beam public-lane score: Coming soon

| Benchmark | Mercury 2.5 | Beam | Winner |
|-----------|-----------|-----------|--------|
| τ³-bench results | 96.0% | Coming soon | Coming soon |
| DeepSearchQA | 34.0% | 80.1% | Beam |
| Terminal-Bench 2.1 (Vals) | 34.5% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 80.1% | Coming soon |
| MCP Atlas | Coming soon | 78.7% | Coming soon |
| BrowseComp | Coming soon | 77.4% | Coming soon |

### Coding

- Winner: Not comparable
- Mercury 2.5 public-lane score: 18.6 (Estimated · #121/144)
- Beam public-lane score: Coming soon

| Benchmark | Mercury 2.5 | Beam | Winner |
|-----------|-----------|-----------|--------|
| SciCode | 38% | 49.7% | Beam |
| DeepSWE | Coming soon | 44.4% | Coming soon |
| SWE-bench Pro | Coming soon | 65.5% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 80.1% | Coming soon |
| SWE-Atlas Codebase QnA | Coming soon | 34.6% | Coming soon |
| SWE Multilingual | Coming soon | 78% | Coming soon |
| SWE-bench Verified | Coming soon | 80.9% | Coming soon |

### Reasoning

- Winner: Not comparable
- Mercury 2.5 public-lane score: 69 (Unranked · 2 rankable rows)
- Beam public-lane score: Coming soon

| Benchmark | Mercury 2.5 | Beam | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | Coming soon | 65.5% | Coming soon |

### Knowledge

- Winner: Not comparable
- Mercury 2.5 public-lane score: 33.2 (Supported · #122/171)
- Beam public-lane score: Coming soon

| Benchmark | Mercury 2.5 | Beam | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 79.0% | 90.5% | Beam |
| HLE w/o tools | Coming soon | 36.2% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Mercury 2.5 public-lane score: 77 (#56/125)
- Beam public-lane score: Coming soon

| Benchmark | Mercury 2.5 | Beam | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 77% | 79.7% | Beam |

### Mathematics

- Winner: Not comparable
- Mercury 2.5 public-lane score: Coming soon
- Beam public-lane score: Coming soon

| Benchmark | Mercury 2.5 | Beam | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 97.8% | Coming soon |

## FAQ

### Which is better overall, Mercury 2.5 or Beam?

Mercury 2.5 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### How many benchmarks does Mercury 2.5 cover on BenchLM?

Mercury 2.5 currently has 6 sourced benchmark scores on BenchLM.

### How many benchmarks does Beam cover on BenchLM?

Beam currently has 16 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Mercury 2.5 vs Mercury 2.5 Preview](/compare/mercury-2-5-vs-mercury-2-5-preview)
- [Beam vs Mercury 2.5 Preview](/compare/mercury-2-5-preview-vs-reflection-beam)
- [Mercury 2.5 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-mercury-2-5)
- [Beam vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-reflection-beam)

## Explore More

- [Mercury 2.5 profile](/models/mercury-2-5)
- [Beam profile](/models/reflection-beam)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)