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Inception: Mercury 2.5 Preview

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inception/mercury-2.5-preview

Mercury 2.5 Preview is Inception’s AI model, released Aug 31, 2026. It costs $0.20/M input and $0.75/M output tokens, and handles a 260K-token context window.

Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception.

Context
260K
Input
$0.20 / 1M
Output
$0.75 / 1M
Released
Aug 31, 2026
Modalities
text→text

Benchmarks

Scores on standardized evaluations. Higher is better — and rank shows where Mercury 2.5 Preview lands among all models tracked on Model Beat.

No standardized benchmark scores from Epoch AI yet — common for very recent, image, or niche models. Scores appear here once published.

Changelog

1
  • Mercury 2.5 Preview (Inception) added to the tracker: $0.04/$0.15 per 1M, 260K context.tracked · Sep 1, 2026

Compare Mercury 2.5 Preview with

Mercury 2.5 Preview vs GPT-6 AstraMercury 2.5 Preview vs Claude Fable 5Mercury 2.5 Preview vs Kimi K3Mercury 2.5 Preview vs Grok 4.6Mercury 2.5 Preview vs DeepSeek-V4-Pro-0813

Frequently asked questions

What is Mercury 2.5 Preview?

Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception.

Who created Mercury 2.5 Preview?

Mercury 2.5 Preview is an AI model developed by Inception, released Aug 31, 2026.

How much does Mercury 2.5 Preview cost?

Mercury 2.5 Preview's list price from Inception is $0.20 per million input tokens and $0.75 per million output tokens.

What is Mercury 2.5 Preview's context window?

Mercury 2.5 Preview supports a context window of up to 260K tokens.

Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Sep 10, 2026.