Compare/JT-35B-Flash vs Mercury 2

JT-35B-FlashvsMercury 2

Side-by-side comparison of pricing, 12 benchmarks, and generation speed.

China Mobile

JT-35B-Flash

Input
Output
Speed
TTFT
Inception

Mercury 2

Input
$0.25/M
Output
$0.75/M
Speed
835 tok/s
TTFT
3.93s

Winner by Category

Cheaper
Mercury 2
Faster (tok/s)
Mercury 2
Lower Latency
Mercury 2
Benchmarks (1-1)
Tie

Pricing Comparison

MetricJT-35B-FlashMercury 2
Input ($/M tokens)$0.25
Output ($/M tokens)$0.75
Cost for 1M input + 100K output tokens:
Mercury 2$0.33

Speed Comparison

Output Speed (tokens/s) — higher is better
JT-35B-Flash
Mercury 2
835 tok/s
Time to First Token (seconds) — lower is better
JT-35B-Flash
Mercury 2
3.93s

Editorial Analysis

Verdict. JT-35B-Flash and Mercury 2 split the benchmark comparison evenly at 1–1. The tiebreaker here is price, speed, and what you actually run them on.

Pricing. Pricing varies significantly between these models — check the table above for the exact per-token rates. Many production workloads actually surface input-token cost (retrieval-augmented prompts, code-context windows), so factor both directions.

Strengths. JT-35B-Flash is strongest on Intelligence Index (29.0). Mercury 2 leads on Coding Index (31.1), Intelligence Index (21.9).

Speed. Speed data is incomplete for this pair; benchmark and price should decide.

Provider. China Mobile and Inception sell to overlapping but distinct developer audiences: China Mobile tends to ship frontier reasoning models with premium positioning, while Inception often prices more aggressively. Your existing vendor relationships, billing, and SLA preferences may matter as much as the raw numbers above.

Recommendation. Both models have legitimate use cases — the right answer depends on whether you are optimizing for benchmark ceiling, latency, or unit cost. Start with the cheaper / faster model, evaluate against your specific task, and only switch if the upgrade shows a meaningful lift.

Head-to-head deltas

  • Benchmark wins tie exactly at 1–1. The tiebreaker on raw benchmark parity will be price, speed, or capability coverage.

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
29.021.9
Coding Index
31.1
Math Index
GPQA Diamond
MMLU-Pro
LiveCodeBench
AIME 2025
MATH-500
Humanity's Last Exam
SciCode
IFBench
TerminalBench
JT-35B-Flash1 wins
1 winsMercury 2

Frequently Asked Questions

Which is cheaper, JT-35B-Flash or Mercury 2?

Mercury 2 is cheaper overall. Its blended price (3:1 input/output ratio) is $0.38/M tokens vs $—/M for JT-35B-Flash.

Which model performs better on benchmarks?

It's a tie — both models win 1 benchmarks each across 12 evaluated categories. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

Mercury 2 generates tokens faster at 835 tok/s vs — tok/s. However, Mercury 2 has lower time-to-first-token (3.93s vs —s).

When should I use JT-35B-Flash vs Mercury 2?

Choose based on your priorities: Mercury 2 for lower cost, both perform similarly on benchmarks, and Mercury 2 for faster generation. For latency-sensitive apps, check the TTFT comparison above.