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Grok 4.6 vs Mercury 2.5 Preview
Grok 4.6 (xAI) and Mercury 2.5 Preview (Inception) compared on benchmarks, pricing, context window, and use-case rankings.
- Mercury 2.5 Preview is cheaper on input tokens — $0.04 vs $2.00 per 1M.
- Grok 4.6 has a larger context window (500K vs 260K tokens).
| Attribute | Grok 4.6 | Mercury 2.5 Preview |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 156 | — |
| Coding | 92 | — |
| Math | 92 | — |
| Reasoning & Knowledge | 73 | — |
| Agentic & Tools | 85 | — |
| Specifications | ||
| Developer | xAI | Inception |
| Family | Grok | — |
| Released | Aug 12, 2026 | Aug 31, 2026 |
| Parameters | — | — |
| Availability | API access | — |
| Context window | 500K | 260K |
| Price — $/M input | $2.00 | $0.04 |
| Price — $/M output | $6.00 | $0.15 |
| Inputs | text, image, file | text |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 99% | — |
| APEX | 41% | — |
| ARC-AGI | 88% | — |
| ARC-AGI-2 | 67% | — |
| GPQA Diamond | 94% | — |
| Humanity's Last Exam | 43% | — |
| SciCode | 56% | — |
| SimpleBench | 76% | — |
| SimpleQA Verified | 49% | — |
| WebDev Arena | 1629 | — |
| WeirdML | 67% | — |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Frequently asked questions
Which is cheaper, Grok 4.6 or Mercury 2.5 Preview?
Mercury 2.5 Preview is cheaper on input tokens at $0.04 per million, versus $2.00 (representative OpenRouter pricing).
Which has a larger context window, Grok 4.6 or Mercury 2.5 Preview?
Grok 4.6 supports up to 500K tokens, compared with 260K for the other.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.