Model comparison
Mercury 2.5 vs Phi 3 Medium 4k Instruct
Mercury 2.5 and Phi 3 Medium 4k Instruct score almost the same on the Noometry Index (33.5 vs 33.0), so choose on price, context window or the category you care about most.
Last verified . 0 shared benchmarks.
MicrosoftSummary
- The widest gap is in math, where Phi 3 Medium 4k Instruct leads 33.4 to 23.3.
- Phi 3 Medium 4k Instruct has downloadable open weights; the other is API-only.
Side by side
| Mercury 2.5 | Phi 3 Medium 4k Instruct | |
|---|---|---|
| Provider | Inception | Microsoft |
| Noometry Index | 33.5 | 33.0 |
| Released | 2026-09-08 | — |
| Weights | Proprietary | Open |
| Context window | 260K | — |
| Max output | 66K | — |
| Input $ / M tokens | $0.04 | — |
| Output $ / M tokens | $0.15 | — |
| Results tracked | 4 | 17 |
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Category by category
Coding Mercury 2.5 leads
Mercury 2.5: 39.5 (#156), Phi 3 Medium 4k Instruct: 32.9 (#268)
| Benchmark | Mercury 2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| SciCode | 38.5% | — |
| LMArena Coding | — | 1130 |
| ALE-Bench | 301.65 | — |
Reasoning Too close to call
Mercury 2.5: 22.4 (#193), Phi 3 Medium 4k Instruct: 21.7 (#214)
| Benchmark | Mercury 2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| CritPt | 0% | — |
| LMArena Hard Prompts | — | 1127 |
Math Phi 3 Medium 4k Instruct leads
Mercury 2.5: 23.3 (#272), Phi 3 Medium 4k Instruct: 33.4 (#202)
| Benchmark | Mercury 2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| ProofBench | 3% | — |
| LMArena Math | — | 1173 |
Knowledge Not comparable
Mercury 2.5: —, Phi 3 Medium 4k Instruct: 30.2 (#229)
| Benchmark | Mercury 2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Expert | — | 1108 |
Multilingual Not comparable
Mercury 2.5: —, Phi 3 Medium 4k Instruct: 30.6 (#263)
| Benchmark | Mercury 2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Non-English | — | 1094 |
| LMArena Chinese | — | 1108 |
| LMArena French | — | 1110 |
| LMArena German | — | 1101 |
| LMArena Japanese | — | 1042 |
| LMArena Korean | — | 954 |
| LMArena Russian | — | 1145 |
| LMArena Spanish | — | 1095 |
Instruction Following Not comparable
Mercury 2.5: —, Phi 3 Medium 4k Instruct: 57.6 (#268)
| Benchmark | Mercury 2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Instruction Following | — | 1113 |
Long Context Not comparable
Mercury 2.5: —, Phi 3 Medium 4k Instruct: 34.0 (#255)
| Benchmark | Mercury 2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Longer Query | — | 1120 |
Writing & Preference Not comparable
Mercury 2.5: —, Phi 3 Medium 4k Instruct: 34.1 (#272)
| Benchmark | Mercury 2.5 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Text | — | 1138 |
| LMArena Creative Writing | — | 1107 |
| LMArena Multi-Turn | — | 1088 |
Frequently asked questions
Is Mercury 2.5 better than Phi 3 Medium 4k Instruct?
Mercury 2.5 and Phi 3 Medium 4k Instruct score almost the same on the Noometry Index (33.5 vs 33.0), so choose on price, context window or the category you care about most.
Is Mercury 2.5 or Phi 3 Medium 4k Instruct better for coding?
Mercury 2.5 scores higher on coding benchmarks: 39.5 versus 32.9 in the Noometry coding category.
How many benchmarks do Mercury 2.5 and Phi 3 Medium 4k Instruct share?
0 benchmarks have published results for both models. Mercury 2.5 has 4 scored results on Noometry and Phi 3 Medium 4k Instruct has 17.