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Mercury 2.5 Preview vs Mistral Large 3

Detailed technical comparison between Mercury 2.5 Preview (Inception AI) and Mistral Large 3 (Mistral). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.

⚡ Executive Summary & Verdict

Comparison Snapshot

Mercury 2.5 Preview: 1 WinvsMistral Large 3: 4 Wins
Context Leader

Mistral Large 3

262,144 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

Mercury 2.5 Preview

$0.04 / MTok
Inception AIactive

Mercury 2.5 Preview

Mercury 2.5 Preview is an advanced artificial intelligence model engineered by Inception AI. Tailored for complex multi-step reasoning, programming synthesis, and extended document comprehension, Mercury 2.5 Preview represents a key architectural iteration in the Inception AI model family. First released in 2026-08-31, it serves enterprise developers, research teams, and autonomous system architects requiring strict instruction compliance. Featuring an input capacity of 260,000 tokens (approximately 347 words), Mercury 2.5 Preview processes multi-file code repositories, lengthy technical reports, and complex prompts in a single inference call.

View Mercury 2.5 Preview Full Specs →
Mistralactive

Mistral Large 3

Mistral Large 3 is an advanced artificial intelligence model engineered by Mistral. Tailored for complex multi-step reasoning, programming synthesis, and extended document comprehension, Mistral Large 3 represents a key architectural iteration in the Mistral model family. First released in 2024-07-24, it serves enterprise developers, research teams, and autonomous system architects requiring strict instruction compliance. Featuring an input capacity of 262,144 tokens (approximately 350 words), Mistral Large 3 processes multi-file code repositories, lengthy technical reports, and complex prompts in a single inference call.

View Mistral Large 3 Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationMercury 2.5 PreviewMistral Large 3
ProviderInception AIMistral
Context Window260,000 tokens262,144 tokens🏆
Agent SuitabilityNot yet benchmarked91/100 (est.)
Time to First Token (TTFT)No public TTFT data250 ms (est.)
Deployment Modelmanaged apimanaged api
Production StabilityStable GA (est.)Stable GA (est.)
API AvailableYesYes
Released Date2026-08-312024-07-24

API Pricing Comparison

Input Price per Million Tokens

Mercury 2.5 Preview

$0.04

Mistral Large 3

$0.50

Output Price per Million Tokens

Mercury 2.5 Preview

$0.15

Mistral Large 3

$1.50

💡 Cost Ratio: Mercury 2.5 Preview is 12.5x cheaper per input token than Mistral Large 3.

Want to test both models live?

Run side-by-side prompt benchmarks in our dynamic multi-model Sandbox. Compare execution speeds, latency metrics, and compute actual costs in real-time.

Benchmark Performance Metrics

Standardized Scores (0–100%)

Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.

MMLUGeneral knowledge & multi-task understanding
86.4%vs86.8%+0.4% Mistral Large 3
Mercury 2.5 Preview
Mistral Large 3 🏆
HumanEvalPython coding & logic synthesis
88.2%vs88.2%+0.0% Mistral Large 3
Mercury 2.5 Preview
Mistral Large 3
MATHComplex mathematical problem solving
78.0%vs79.5%+1.5% Mistral Large 3
Mercury 2.5 Preview
Mistral Large 3 🏆
GPQAGraduate-level expert reasoning
52.0%vs58.5%+6.5% Mistral Large 3
Mercury 2.5 Preview
Mistral Large 3 🏆
HellaSwagCommonsense reasoning and inference
88.0%vs90.0%+2.0% Mistral Large 3
Mercury 2.5 Preview
Mistral Large 3 🏆
MT-BenchMulti-turn conversation flow quality
9.1%vs9.0%+0.1% Mercury 2.5 Preview
Mercury 2.5 Preview 🏆
Mistral Large 3

Mercury 2.5 Preview Quirks & Gotchas

No developer gotchas reported.

Mistral Large 3 Quirks & Gotchas

  • Top-tier structured JSON output — best multilingual function calling
  • Le Chat offers free consumer tier with same underlying model

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