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Grok-1.5 vs Nova Micro

Grok-1.5 and Nova Micro are closely matched at -2.0 and 2.9 on the LLM Stats Score.

xAI · Amazon · Updated for 2026

Which is better?

Grok-1.5 and Nova Micro are closely matched on the overall LLM Stats Score at -2.0 and 2.9.

In the 5 individual benchmarks reported for both models, Nova Micro wins 4; this is a narrower head-to-head signal than the composite indexes.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Grok-1.5

  • you are already invested in the xAI ecosystem

Choose Nova Micro

  • you value its reported benchmark strengths — it wins 4 of 5 exact shared results
  • you want the most recent training data — it shipped Nov 2024

At a glance

The differences that matter most.

Grok-1.5
xAI
Nova Micro
Amazon
Core performance indexes
LLM Stats Score
-2.0
#317
2.9
#293
Reasoning
-1.5
#309
2.1
#288
Coding
-0.8
#228
2.7
#207
Cost, coverage & limits
Benchmark wins
1 of 5
4 of 5
Input price
— / M
$0.03 / M
Output price
— / M
$0.14 / M
Context window
—
128,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
Grok-1.5
Nova Micro
Math
5.5#260
9.4#239
Finance
5.3#159
2.0#170
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

9 reported for Grok-1.5 · 17 for Nova Micro

5 shared

Grok-1.5 outperforms in 1 benchmarks (MMLU), while Nova Micro is better at 4 benchmarks (GPQA, GSM8k, HumanEval, MATH).

Nova Micro significantly outperforms across most benchmarks.

Sat Aug 29 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Nova Micro specifies input context (128,000 tokens). Only Nova Micro specifies output context (128,000 tokens).

xAI
Grok-1.5
Input- tokens
Output- tokens
Amazon
Nova Micro
Input128,000 tokens
Output128,000 tokens
Sat Aug 29 2026 • llm-stats.com

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Grok-1.5

Proprietary

Closed source

Nova Micro

Proprietary

Closed source

Release Timeline

When each model was launched

Grok-1.5 was released on 2024-03-28, while Nova Micro was released on 2024-11-20.

Nova Micro is 8 months newer than Grok-1.5.

Grok-1.5

Mar 28, 2024

2.4 years ago

Nova Micro

Nov 20, 2024

1.8 years ago

7mo newer

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

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Grok-1.5 and Nova Micro side-by-side, then vote on the output you prefer.

Grok-1.5
✓ Preferred
Nova Micro
Open in Playground

FAQ

Common questions about Grok-1.5 vs Nova Micro.

Which is better, Grok-1.5 or Nova Micro?

Grok-1.5 and Nova Micro are closely matched on the LLM Stats Score at -2.0 and 2.9. Grok-1.5 is made by xAI and Nova Micro is made by Amazon. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Grok-1.5 compare to Nova Micro in benchmarks?

Grok-1.5 scores GSM8k: 90.0%, DocVQA: 85.6%, MMLU: 81.3%, HumanEval: 74.1%, MMMU: 53.6%. Nova Micro scores GSM8k: 92.3%, ARC-C: 90.2%, Translation Set1→en COMET22: 88.7%, Translation en→Set1 COMET22: 88.5%, IFEval: 87.2%.

What are the context window sizes for Grok-1.5 and Nova Micro?

Grok-1.5 supports an unknown number of tokens and Nova Micro 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 Grok-1.5 and Nova Micro?

Key differences include LLM Stats Score (-2.0 vs 2.9). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok-1.5 and Nova Micro?

Grok-1.5 is developed by xAI and Nova Micro is developed by Amazon.

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