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InceptionReleased on Oct 19, 2026

Mercury 3: Benchmarks, Pricing & Context Window

Mercury 3 is a language model from Inception, released in October 2026, with a 1M-token context window, and pricing from $0.100/M input, $0.010/M cached input, $0.350/M output.

Mercury 3 is Inception's flagship diffusion-based LLM (dLLM), released 2026-10-19 and described as the most capable diffusion LLM released to date. Inception says it is more than 40x larger in total parameters than Mercury 1 and runs at

Input
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Output
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Mercury 3 benchmarks

Capability tiers

Standing within each category, adjusted for leaderboard depth.

Real tasks performance

High-confidence performance for Mercury 3 across real-world prompt categories. Only 95% intervals at most 4 points wide are shown.

Performance by conversation depth

How Mercury 3 holds up as conversations get longer.

Quality Tracker

Mercury 3 Performance Across Datasets

Scores sourced from the model's scorecard, paper, or official blog posts

LLM Stats Logollm-stats.com - Wed Oct 21 2026
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Mercury 3 pricing

Providers

Mercury 3 starts at $0.100 per million input tokens and $0.350 per million output tokens via Inception. Reused prompt prefixes cost $0.0100 per million cached input tokens.

ProviderInput $/MCached input $/MOutput $/MContext in / outTTFT p95 sOutput p5 c/sModalities in / out
Inception logoInception
$0.100$0.0100$0.3501.0M/131.1K
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Cached input is the discounted price for prompt tokens served from a provider cache. TTFT is time to first token. Output is characters per second; p5 is the sustained floor exceeded by 95% of observed requests.

Mercury 3 context window

Input and output token limits for Mercury 3, plus how it ranks on long-context understanding.

InputOutput
1Mtokens
131Ktokens
≈ 1.5k pages of text
1M
8K128K1M

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Mercury 3 latency

Mercury 3 time to first token, sustained output throughput, and failed-request rate from live model usage over the trailing 7 days.

Mercury 3 examples

Recent arena outputs from Mercury 3, picked from the highest-ranked matchups.

Mercury 3 license

Mercury 3 is a proprietary model available under its provider's product and API terms.

License
Proprietary
Hosted access

Proprietary license - usage restrictions apply

Mercury 3 resources

Official sources for Mercury 3: provider documentation, official playground, official launch post.

Mercury 3 vs other models

The most-compared alternatives to Mercury 3 are Qwen3.5-397B-A17B, Solar Pro 4, o3. Open any pair side-by-side for benchmarks, pricing, context, and latency.

Models like Mercury 3

Models ranked just above and below Mercury 3 by LLM Stats score.

 

Qwen3.5-397B-A17B

Score pending
 

Solar Pro 4

Score pending
 

o3

Score pending
 

Mistral Small 4

Score pending
 

Qwen3.8-27B

Score pending
 

Muse Glimmer-30B

Score pending

FAQ

Common questions about Mercury 3.

When was Mercury 3 released?

Mercury 3 was released on October 19, 2026 by Inception. This is the official Mercury 3 release date tracked on LLM Stats.

How much does Mercury 3 cost?

Mercury 3 pricing starts at $0.10 per million input tokens, $0.01 per million cached input tokens, $0.35 per million output tokens via Inception, the lowest price among tracked providers.

Who created Mercury 3?

Mercury 3 was created by Inception.

What is the license for Mercury 3?

Mercury 3 is released under the Proprietary license.

Where can I use Mercury 3?

Mercury 3 is available through 1 provider including Inception.

Where is the Mercury 3 paper or technical report?

Mercury 3 has a paper or technical report available at https://www.inceptionlabs.ai/blog/introducing-mercury-3. Use that source for architecture, training, release and evaluation details.

What models should I compare Mercury 3 against?

Common Mercury 3 comparisons include Mercury 3 vs Qwen3.5-397B-A17B, Mercury 3 vs Solar Pro 4, Mercury 3 vs o3. Compare them side by side for benchmark scores, pricing, context window, latency and provider availability.