GPT-5 Medium vs Mercury 2: Specs & Benchmark Comparison
| Characteristic | GPT-5 Medium | Mercury 2 |
|---|---|---|
| Company | OpenAI | Inception |
| Release Date | August 6, 2025 | February 1, 2026 |
| Parameters | — | — |
| Multimodal | Yes | No |
| Context (input) | 400K | — |
| Context (output) | 64K | — |
| Input Price / 1M | $0.75 | — |
| Output Price / 1M | $3.00 | — |
| Average Score | 0.9 | 0.7 |
| Benchmarks | ||
| GPQA | 0.9 | 0.7 |
| AIME 2025 | 0.9 | 0.9 |
Visual Benchmark Comparison
GPT-5 Medium
Mercury 2
GPQA0.9 vs 0.7
0.9
0.7
AIME 20250.9 vs 0.9
0.9
0.9
Verdict
Mercury 2 leads in 1 out of 2 comparison categories.
Overall Performance
Both models show comparable average scores: GPT-5 Medium — 0.9, Mercury 2 — 0.7.
Recency
Mercury 2 is newer: released 2/1/2026 vs 8/6/2025.
More About These Models
Related Comparisons
The GPT-5 Medium and Mercury 2 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-5 Medium or Mercury 2 page. See also the complete list of AI model comparisons.