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Model Comparison

GPT-5.1 Instant vs Mistral NeMo InstructWhich is better in 2026?

Comparing GPT-5.1 Instant and Mistral NeMo Instruct across benchmarks, pricing, and capabilities.

Verdict: GPT-5.1 Instant vs Mistral NeMo Instruct — which is better?

GPT-5.1 Instant (by OpenAI) 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 22.9x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

GPT-5.1 Instant also accepts a larger context window (400,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose GPT-5.1 Instant if…

  • you process long inputs — it offers a 400,000 token context window
  • you want the most recent training data — it shipped Nov 2025

Choose Mistral NeMo Instruct if…

  • cost matters — it's about 22.9x cheaper per token
  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

GPT-5.1 Instant and Mistral NeMo Instructdon'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, GPT-5.1 Instant ($1.25/1M tokens) is 8.3x more expensive than Mistral NeMo Instruct ($0.15/1M tokens).

For output processing, GPT-5.1 Instant ($10.00/1M tokens) is 66.7x more expensive than Mistral NeMo Instruct ($0.15/1M tokens).

In conclusion, GPT-5.1 Instant is more expensive than Mistral NeMo Instruct.*

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

Lowest available price from all providers
Fri Aug 07 2026 • llm-stats.com
OpenAI
GPT-5.1 Instant
Input tokens$1.25
Output tokens$10.00
Best providerOpenAI
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

GPT-5.1 Instant accepts 400,000 input tokens compared to Mistral NeMo Instruct's 128,000 tokens. Both models can generate responses up to 128,000 tokens.

OpenAI
GPT-5.1 Instant
Input400,000 tokens
Output128,000 tokens
Mistral AI
Mistral NeMo Instruct
Input128,000 tokens
Output128,000 tokens
Fri Aug 07 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5.1 Instant supports multimodal inputs, whereas Mistral NeMo Instruct does not.

GPT-5.1 Instant can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-5.1 Instant

Text
Images
Audio
Video

Mistral NeMo Instruct

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-5.1 Instant 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.

GPT-5.1 Instant

Proprietary

Closed source

Mistral NeMo Instruct

Apache 2.0

Open weights

Release Timeline

When each model was launched

GPT-5.1 Instant was released on 2025-11-12, while Mistral NeMo Instruct was released on 2024-07-18.

GPT-5.1 Instant is 16 months newer than Mistral NeMo Instruct.

GPT-5.1 Instant

Nov 12, 2025

8 months ago

1.3yr newer
Mistral NeMo Instruct

Jul 18, 2024

2.1 years ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

GPT-5.1 Instant is available from OpenAI. Mistral NeMo Instruct is available from Google, Mistral AI.

GPT-5.1 Instant

openai logo
OpenAI
Input Price:Input: $1.25/1MOutput Price:Output: $10.00/1M

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

Larger context window (400,000 tokens)
Supports multimodal inputs
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against GPT-5.1 Instant and Mistral NeMo Instruct side-by-side, then vote on the output you prefer.

GPT-5.1 Instant
✓ Preferred
Mistral NeMo Instruct
Open in Playground
AI Model Comparison Table
Feature
OpenAI
GPT-5.1 Instant
Mistral AI
Mistral NeMo Instruct

FAQ

Common questions about GPT-5.1 Instant vs Mistral NeMo Instruct.

Which is better, GPT-5.1 Instant or Mistral NeMo Instruct?

GPT-5.1 Instant (OpenAI) 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 GPT-5.1 Instant compare to Mistral NeMo Instruct in benchmarks?

GPT-5.1 Instant scores Tau2 Telecom: 95.6%, AIME 2025: 94.0%, BrowseComp Long Context 128k: 90.0%, GPQA: 88.1%, MMMU: 85.4%. Mistral NeMo Instruct scores HellaSwag: 83.5%, Winogrande: 76.8%, TriviaQA: 73.8%, CommonSenseQA: 70.4%, MMLU: 68.0%.

Is GPT-5.1 Instant cheaper than Mistral NeMo Instruct?

Mistral NeMo Instruct is 8.3x cheaper for input tokens. GPT-5.1 Instant costs $1.25/M input and $10.00/M output via openai. Mistral NeMo Instruct costs $0.15/M input and $0.15/M output via google.

What are the context window sizes for GPT-5.1 Instant and Mistral NeMo Instruct?

GPT-5.1 Instant supports 400K 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 GPT-5.1 Instant and Mistral NeMo Instruct?

Key differences include context window (400K vs 128K), input pricing ($1.25 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 GPT-5.1 Instant and Mistral NeMo Instruct?

GPT-5.1 Instant is developed by OpenAI and Mistral NeMo Instruct is developed by Mistral AI.