# Mercury 2.5 vs Beam 1.0 501B-A23B FP8

> Side-by-side benchmark comparison for Mercury 2.5 and Beam 1.0 501B-A23B FP8 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/mercury-2-5-vs-reflection-beam-fp8
- Last updated: October 16, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Beam 1.0 501B-A23B FP8 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Beam 1.0 501B-A23B FP8 has the higher overall point estimate 71 to 33.77. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in reasoning, where the averages are 72.6 for Mercury 2.5 and 85.8 for Beam 1.0 501B-A23B FP8.
- The biggest single benchmark swing is τ³-bench results in Agentic, with scores of 96.0% and 36.8%.
- Beam 1.0 501B-A23B FP8 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Beam 1.0 501B-A23B FP8 also has the larger context window at 1M.

## Model Snapshot

| Property | Mercury 2.5 | Beam 1.0 501B-A23B FP8 |
|----------|----------|----------|
| Creator | Inception | Reflection AI |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 260K | 1M |
| Overall Score | 33.77 | null |
| Benchmarks Covered | 6 | 19 |
| Pricing (input/output) | $0.04 / $0.15 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Mercury 2.5 public-lane score: 12 (Supported · #119/128)
- Beam 1.0 501B-A23B FP8 public-lane score: Coming soon

| Benchmark | Mercury 2.5 | Beam 1.0 501B-A23B FP8 | Winner |
|-----------|-----------|-----------|--------|
| τ³-bench results | 96.0% | 36.8% | Mercury 2.5 |
| DeepSearchQA | 34.0% | 79.6% | Beam 1.0 501B-A23B FP8 |
| Terminal-Bench 2.1 (Vals) | 34.5% | Coming soon | Coming soon |
| HLE w/ tools | Coming soon | 51.1% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 78.9% | Coming soon |
| MCP Atlas | Coming soon | 81.5% | Coming soon |
| BrowseComp | Coming soon | 76.7% | Coming soon |

### Coding

- Winner: Not comparable
- Mercury 2.5 public-lane score: 16.1 (Estimated · #130/150)
- Beam 1.0 501B-A23B FP8 public-lane score: Coming soon

| Benchmark | Mercury 2.5 | Beam 1.0 501B-A23B FP8 | Winner |
|-----------|-----------|-----------|--------|
| SciCode | 38% | 48.3% | Beam 1.0 501B-A23B FP8 |
| DeepSWE | Coming soon | 43.0% | Coming soon |
| SWE-bench Pro | Coming soon | 65.9% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 78.9% | Coming soon |
| SWE-Atlas Codebase QnA | Coming soon | 32.2% | Coming soon |
| SWE Multilingual | Coming soon | 78.1% | Coming soon |
| SWE-bench Verified | Coming soon | 80.2% | Coming soon |

### Reasoning

- Winner: Not comparable
- Mercury 2.5 public-lane score: 72.6 (Unranked · 2 rankable rows)
- Beam 1.0 501B-A23B FP8 public-lane score: 85.8 (Unranked · 3 rankable rows)

| Benchmark | Mercury 2.5 | Beam 1.0 501B-A23B FP8 | Winner |
|-----------|-----------|-----------|--------|
| CritPt | Coming soon | 17.4% | Coming soon |
| LongBench v2 | Coming soon | 67.6% | Coming soon |

### Knowledge

- Winner: Not comparable
- Mercury 2.5 public-lane score: 34.4 (Supported · #136/184)
- Beam 1.0 501B-A23B FP8 public-lane score: Coming soon

| Benchmark | Mercury 2.5 | Beam 1.0 501B-A23B FP8 | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 79.0% | 90.3% | Beam 1.0 501B-A23B FP8 |
| HLE w/o tools | Coming soon | 36% | Coming soon |

### Instruction Following

- Winner: Beam 1.0 501B-A23B FP8
- Mercury 2.5 public-lane score: 81.1 (#58/148)
- Beam 1.0 501B-A23B FP8 public-lane score: 89.8 (#28/148)

| Benchmark | Mercury 2.5 | Beam 1.0 501B-A23B FP8 | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 77% | 80.7% | Beam 1.0 501B-A23B FP8 |

### Mathematics

- Winner: Not comparable
- Mercury 2.5 public-lane score: Coming soon
- Beam 1.0 501B-A23B FP8 public-lane score: 87.9 (Unranked · 1 rankable row)

| Benchmark | Mercury 2.5 | Beam 1.0 501B-A23B FP8 | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 98.0% | Coming soon |

## FAQ

### Which is better overall, Mercury 2.5 or Beam 1.0 501B-A23B FP8?

Beam 1.0 501B-A23B FP8 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Mercury 2.5 and Beam 1.0 501B-A23B FP8?

The widest category gap is in reasoning, where the averages are 72.6 for Mercury 2.5 and 85.8 for Beam 1.0 501B-A23B FP8.

### 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 1.0 501B-A23B FP8 cover on BenchLM?

Beam 1.0 501B-A23B FP8 currently has 19 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 1.0 501B-A23B FP8 vs Mercury 2.5 Preview](/compare/mercury-2-5-preview-vs-reflection-beam-fp8)
- [Mercury 2.5 vs Beam 1.0 501B-A23B](/compare/mercury-2-5-vs-reflection-beam)
- [Beam 1.0 501B-A23B FP8 vs Beam 1.0 501B-A23B](/compare/reflection-beam-vs-reflection-beam-fp8)

## Explore More

- [Mercury 2.5 profile](/models/mercury-2-5)
- [Beam 1.0 501B-A23B FP8 profile](/models/reflection-beam-fp8)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)