Model Comparison

Claude Sonnet 4.5 vs Mistral NeMo InstructWhich is better in 2026?

Comparing Claude Sonnet 4.5 and Mistral NeMo Instruct across benchmarks, pricing, and capabilities.

Verdict: Claude Sonnet 4.5 vs Mistral NeMo Instruct — which is better?

Claude Sonnet 4.5 (by Anthropic) and Mistral NeMo Instruct (by Mistral AI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

On price, Mistral NeMo Instruct is roughly 40.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Sonnet 4.5 also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude Sonnet 4.5 if…

  • you process long inputs — it offers a 200,000 token context window
  • you want the most recent training data — it shipped Sep 2025

Choose Mistral NeMo Instruct if…

  • cost matters — it's about 40.0x cheaper per token
  • you need open weights you can self-host or fine-tune
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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude Sonnet 4.5 and Mistral NeMo Instruct don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Mistral NeMo Instruct costs less

For input processing, Claude Sonnet 4.5 ($3.00/1M tokens) is 20.0x more expensive than Mistral NeMo Instruct ($0.15/1M tokens).

For output processing, Claude Sonnet 4.5 ($15.00/1M tokens) is 100.0x more expensive than Mistral NeMo Instruct ($0.15/1M tokens).

In conclusion, Claude Sonnet 4.5 is more expensive than Mistral NeMo Instruct.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Sun Jun 07 2026 • llm-stats.com
Anthropic
Claude Sonnet 4.5
Input tokens$3.00
Output tokens$15.00
Best providerAnthropic
Mistral AI
Mistral NeMo Instruct
Input tokens$0.15
Output tokens$0.15
Best providerGoogle
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude Sonnet 4.5 accepts 200,000 input tokens compared to Mistral NeMo Instruct's 128,000 tokens. Mistral NeMo Instruct can generate longer responses up to 128,000 tokens, while Claude Sonnet 4.5 is limited to 64,000 tokens.

Anthropic
Claude Sonnet 4.5
Input200,000 tokens
Output64,000 tokens
Mistral AI
Mistral NeMo Instruct
Input128,000 tokens
Output128,000 tokens
Sun Jun 07 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Sonnet 4.5 supports multimodal inputs, whereas Mistral NeMo Instruct does not.

Claude Sonnet 4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Sonnet 4.5

Text
Images
Audio
Video

Mistral NeMo Instruct

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Sonnet 4.5 is licensed under a proprietary license, while Mistral NeMo Instruct uses Apache 2.0.

License differences may affect how you can use these models in commercial or open-source projects.

Claude Sonnet 4.5

Proprietary

Closed source

Mistral NeMo Instruct

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Sonnet 4.5 was released on 2025-09-29, while Mistral NeMo Instruct was released on 2024-07-18.

Claude Sonnet 4.5 is 15 months newer than Mistral NeMo Instruct.

Claude Sonnet 4.5

Sep 29, 2025

8 months ago

1.2yr newer
Mistral NeMo Instruct

Jul 18, 2024

1.9 years ago

Knowledge Cutoff

When training data ends

Claude Sonnet 4.5 has a documented knowledge cutoff of 2025-01-31, while Mistral NeMo Instruct's cutoff date is not specified.

We can confirm Claude Sonnet 4.5's training data extends to 2025-01-31, but cannot make a direct comparison without Mistral NeMo Instruct's cutoff date.

Claude Sonnet 4.5

Jan 2025

Mistral NeMo Instruct

—

Provider Availability

Claude Sonnet 4.5 is available from Anthropic. Mistral NeMo Instruct is available from Google, Mistral AI.

Claude Sonnet 4.5

anthropic logo
Anthropic
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Mistral NeMo Instruct

google logo
Google
Input Price:Input: $0.15/1MOutput Price:Output: $0.15/1M
mistral logo
Mistral
Input Price:Input: $0.15/1MOutput Price:Output: $0.15/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Supports multimodal inputs
Mistral AI
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Sonnet 4.5
Mistral AI
Mistral NeMo Instruct

FAQ

Common questions about Claude Sonnet 4.5 vs Mistral NeMo Instruct.

Which is better, Claude Sonnet 4.5 or Mistral NeMo Instruct?

Claude Sonnet 4.5 (Anthropic) and Mistral NeMo Instruct (Mistral AI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Claude Sonnet 4.5 compare to Mistral NeMo Instruct in benchmarks?

Claude Sonnet 4.5 scores MMMLU: 89.1%, AIME 2025: 87.0%, TAU-bench Retail: 86.2%, GPQA: 83.4%, MMMUval: 77.8%. Mistral NeMo Instruct scores HellaSwag: 83.5%, Winogrande: 76.8%, TriviaQA: 73.8%, CommonSenseQA: 70.4%, MMLU: 68.0%.

Is Claude Sonnet 4.5 cheaper than Mistral NeMo Instruct?

Mistral NeMo Instruct is 20.0x cheaper for input tokens. Claude Sonnet 4.5 costs $3.00/M input and $15.00/M output via anthropic. Mistral NeMo Instruct costs $0.15/M input and $0.15/M output via google.

What are the context window sizes for Claude Sonnet 4.5 and Mistral NeMo Instruct?

Claude Sonnet 4.5 supports 200K tokens and Mistral NeMo Instruct supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Sonnet 4.5 and Mistral NeMo Instruct?

Key differences include context window (200K vs 128K), input pricing ($3.00 vs $0.15/M), multimodal support (yes vs no), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Sonnet 4.5 and Mistral NeMo Instruct?

Claude Sonnet 4.5 is developed by Anthropic and Mistral NeMo Instruct is developed by Mistral AI.

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