# Flint vs Mercury 2.5

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

- Canonical page: https://benchlm.ai/compare/flint-40b-a2-5b-vs-mercury-2-5
- Last updated: October 20, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Flint and Mercury 2.5 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.
- Flint has the lower published output-token price.
- Mercury 2.5 has the larger published context window at 260K.

## Model Snapshot

| Property | Flint | Mercury 2.5 |
|----------|----------|----------|
| Creator | Recursive | Inception |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 256K | 260K |
| Independent public score (not head-to-head) | null | 33.57 |
| Benchmarks Covered | 5 | 6 |
| Pricing (input/output) | $0.00 / $0.00 | $0.04 / $0.15 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Flint public-lane score: Coming soon
- Mercury 2.5 public-lane score: 12.1 (Supported · #123/132)

| Benchmark | Flint | Mercury 2.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 54.9% | Coming soon | Coming soon |
| τ³-bench results | Coming soon | 96.0% | Coming soon |
| DeepSearchQA | Coming soon | 34.0% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 34.5% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Flint public-lane score: Coming soon
- Mercury 2.5 public-lane score: 16.1 (Estimated · #133/153)

| Benchmark | Flint | Mercury 2.5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 74.2% | Coming soon | Coming soon |
| LiveCodeBench v6 | 80.3% | Coming soon | Coming soon |
| SciCode | Coming soon | 38% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Flint public-lane score: Coming soon
- Mercury 2.5 public-lane score: 71.7 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Insufficient shared evidence
- Flint public-lane score: Coming soon
- Mercury 2.5 public-lane score: 34.4 (Supported · #139/187)

| Benchmark | Flint | Mercury 2.5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | Coming soon | 79.0% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Flint public-lane score: 94.7 (#3/152)
- Mercury 2.5 public-lane score: 81.1 (#60/152)

| Benchmark | Flint | Mercury 2.5 | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 89.2% | 77% | Flint |
| IFEval | 95.1% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Flint and Mercury 2.5?

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

- [Flint vs Mercury 2.5 Preview](/compare/flint-40b-a2-5b-vs-mercury-2-5-preview)
- [Mercury 2.5 vs Mercury 2.5 Preview](/compare/mercury-2-5-vs-mercury-2-5-preview)
- [Flint vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-flint-40b-a2-5b)
- [Mercury 2.5 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-mercury-2-5)

## Explore More

- [Flint profile](/models/flint-40b-a2-5b)
- [Mercury 2.5 profile](/models/mercury-2-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)