ApolloRaines/Prometheus-Mistral-Nemo-12B

TEXT GENERATIONPricing:Input $1.2 / Output $4.8Concurrent Unit Cost:1Model Size:12.2BQuant:FP8Context Size:32kTool Calling:SupportedPublished:Sep 9, 2026License:apache-2.0Architecture:Transformer Open Weights Featherless Exclusive Cold

ApolloRaines/Prometheus-Mistral-Nemo-12B is a 12.2 billion parameter Mistral-Nemo-Instruct model that has undergone autonomous self-improvement via Project Prometheus. This model features enhanced epistemic discipline, improving its ability to check assumptions, flag uncertainty, and detect adversarial framing. It is optimized for robust reasoning and self-correction, particularly excelling in cognitive reflection tasks and complex problem-solving.

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Prometheus-Mistral-Nemo-12B Overview

ApolloRaines/Prometheus-Mistral-Nemo-12B is a 12.2 billion parameter model based on the Mistral-Nemo-Instruct architecture, significantly enhanced through Project Prometheus's autonomous self-improvement process. This process involves the model evaluating its own behavioral weaknesses, proposing targeted improvements, and applying permanent weight-level modifications using the proprietary jBlaze system. Each modification is rigorously validated against functional benchmarks to ensure actual reasoning gains without human intervention in the selection process.

Key Capabilities & Improvements

This Prometheus iteration focuses on improving the model's epistemic discipline, bridging the gap between its reasoning potential and actual performance. Key enhancements include:

  • Reasoning Discipline: Improved stop-condition awareness, tradeoff analysis, and alternative solution generation, reducing reliance on initial pattern-matching.
  • Epistemic Honesty: Enhanced uncertainty awareness and clear labeling of speculative statements.
  • Adversarial Robustness: Stronger detection of misleading inputs, unsupported claims, and adversarial framing, as demonstrated by its ability to pass the "bat and ball" cognitive reflection test and its variants.
  • Self-Correction: Better internal tracking for amending its own reasoning mid-answer.

How Prometheus Works

The self-improvement cycle involves:

  1. Self-evaluation: Assessing performance across reasoning depth, uncertainty handling, and adversarial robustness.
  2. Memory: Recording results and strategies for future iterations.
  3. Planning: Identifying weakest areas and selecting improvement strategies.
  4. Surgery: Applying modifications via jBlaze to a cloned model.
  5. Validation: Benchmarking the clone against functional tests.
  6. Promotion/Rejection: Accepting improvements that pass benchmarks or rejecting those that degrade capability.

This version specifically adds functional benchmark gates at every step, ensuring that behavioral improvements are robust and do not sacrifice the base model's core reasoning capabilities. The model maintains performance on long-form responses while significantly improving its handling of adversarial and cognitively challenging questions.