Model comparison
Mercury 2.5 vs Nova Premier 1.0
Nova Premier 1.0 is the stronger model overall, scoring 38.3 to 33.5 on the Noometry Index. Mercury 2.5 costs 74× less per token, which makes it the better buy when Nova Premier 1.0's lead doesn't matter for your workload.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in math, where Nova Premier 1.0 leads 33.8 to 23.3.
- Mercury 2.5 is cheaper at $0.04 / $0.15 per million input/output tokens, against $2.50 / $12.50 for Nova Premier 1.0.
- Nova Premier 1.0 accepts more context: 1M tokens versus 260K.
Side by side
| Mercury 2.5 | Nova Premier 1.0 | |
|---|---|---|
| Provider | Inception | Amazon |
| Noometry Index | 33.5 | 38.3 |
| Released | 2026-09-08 | 2025-04-30 |
| Weights | Proprietary | Proprietary |
| Context window | 260K | 1M |
| Max output | 66K | 10K |
| Input $ / M tokens | $0.04 | $2.50 |
| Output $ / M tokens | $0.15 | $12.50 |
| Results tracked | 4 | 6 |
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Category by category
Coding Not comparable
Mercury 2.5: 39.5 (#156), Nova Premier 1.0: —
Reasoning Too close to call
Mercury 2.5: 22.4 (#193), Nova Premier 1.0: 23.0 (#185)
| Benchmark | Mercury 2.5 | Nova Premier 1.0 |
|---|---|---|
| Kagi LLM Benchmark | — | 44.8% |
| CritPt | 0% | — |
Math Nova Premier 1.0 leads
Mercury 2.5: 23.3 (#272), Nova Premier 1.0: 33.8 (#199)
| Benchmark | Mercury 2.5 | Nova Premier 1.0 |
|---|---|---|
| ProofBench | 3% | — |
| Omni-MATH | — | 35% |
Knowledge Not comparable
Mercury 2.5: —, Nova Premier 1.0: 35.8 (#180)
| Benchmark | Mercury 2.5 | Nova Premier 1.0 |
|---|---|---|
| MMLU-Pro | — | 72.6% |
| GPQA (HELM) | — | 51.8% |
Instruction Following Not comparable
Mercury 2.5: —, Nova Premier 1.0: 66.8 (#204)
| Benchmark | Mercury 2.5 | Nova Premier 1.0 |
|---|---|---|
| IFEval | — | 80.3% |
Writing & Preference Not comparable
Mercury 2.5: —, Nova Premier 1.0: 51.0 (#178)
| Benchmark | Mercury 2.5 | Nova Premier 1.0 |
|---|---|---|
| WildBench | — | 78.8% |
Frequently asked questions
Is Mercury 2.5 better than Nova Premier 1.0?
Nova Premier 1.0 is the stronger model overall, scoring 38.3 to 33.5 on the Noometry Index. Mercury 2.5 costs 74× less per token, which makes it the better buy when Nova Premier 1.0's lead doesn't matter for your workload.
Which is cheaper, Mercury 2.5 or Nova Premier 1.0?
Mercury 2.5 is cheaper. It lists at $0.04 per million input tokens and $0.15 per million output tokens; Nova Premier 1.0 lists at $2.50 and $12.50.
Which has the bigger context window?
Nova Premier 1.0 does, with 1M tokens against 260K.
How many benchmarks do Mercury 2.5 and Nova Premier 1.0 share?
0 benchmarks have published results for both models. Mercury 2.5 has 4 scored results on Noometry and Nova Premier 1.0 has 6.