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Grok 4.5 vs Sakana Namazu

Grok 4.5 and Sakana Namazu are closely matched at 47.0 and 43.2 on the LLM Stats Score. Sakana Namazu is 1.8x cheaper per token.

xAI · Sakana AI · Updated for 2026

Which is better?

Grok 4.5 and Sakana Namazu are closely matched on the overall LLM Stats Score at 47.0 and 43.2.

On price, Sakana Namazu is roughly 1.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Grok 4.5 also accepts a larger context window (500,000 input tokens), making it the stronger choice for long documents and large codebases.

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

Choose Grok 4.5

  • you process long inputs — it offers a 500,000 token context window

Choose Sakana Namazu

  • cost matters — it's about 1.8x cheaper per token
  • you want the most recent training data — it shipped Aug 2026

At a glance

The differences that matter most.

Grok 4.5
xAI
Sakana Namazu
Sakana AI
Core performance indexes
LLM Stats Score
47.0
#19
43.2
#37
Reasoning
45.5
#26
43.0
#36
Cost, coverage & limits
Benchmark wins
—
—
Input price
$2.00 / M
$0.95 / M
Output price
$6.00 / M
$4.00 / M
Context window
500,000
256,000

Individual benchmarks

14 reported for Grok 4.5 · 3 for Sakana Namazu

No common benchmarks found

Grok 4.5 and Sakana Namazudon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Sakana Namazu costs less

For input processing, Grok 4.5 ($2.00/1M tokens) is 2.1x more expensive than Sakana Namazu ($0.95/1M tokens).

For output processing, Grok 4.5 ($6.00/1M tokens) is 1.5x more expensive than Sakana Namazu ($4.00/1M tokens).

In conclusion, Grok 4.5 is more expensive than Sakana Namazu.*

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

Lowest available price from all providers
Fri Aug 28 2026 • llm-stats.com
xAI
Grok 4.5
Input tokens$2.00
Output tokens$6.00
Best providerxAI
Sakana AI
Sakana Namazu
Input tokens$0.95
Output tokens$4.00
Best providerUnknown Organization
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Grok 4.5 accepts 500,000 input tokens compared to Sakana Namazu's 256,000 tokens. Only Sakana Namazu specifies output context (256,000 tokens).

xAI
Grok 4.5
Input500,000 tokens
Output- tokens
Sakana AI
Sakana Namazu
Input256,000 tokens
Output256,000 tokens
Fri Aug 28 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Grok 4.5 and Sakana Namazu support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Grok 4.5

Text
Images
Audio
Video

Sakana Namazu

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Grok 4.5

Proprietary

Closed source

Sakana Namazu

Proprietary

Closed source

Release Timeline

When each model was launched

Grok 4.5 was released on 2026-07-16, while Sakana Namazu was released on 2026-08-03.

Sakana Namazu is 1 month newer than Grok 4.5.

Grok 4.5

Jul 16, 2026

1 months ago

Sakana Namazu

Aug 3, 2026

3 weeks ago

2w newer

Knowledge Cutoff

When training data ends

Grok 4.5 has a documented knowledge cutoff of 2026-02-01, while Sakana Namazu's cutoff date is not specified.

We can confirm Grok 4.5's training data extends to 2026-02-01, but cannot make a direct comparison without Sakana Namazu's cutoff date.

Grok 4.5

Feb 2026

Sakana Namazu

—

Provider Availability

Grok 4.5 is available from xAI. Sakana Namazu is available from Sakana AI.

Grok 4.5

xai logo
xAI
Input Price:Input: $2.00/1MOutput Price:Output: $6.00/1M

Sakana Namazu

sakana logo
Unknown Organization
Input Price:Input: $0.95/1MOutput Price:Output: $4.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Grok 4.5 and Sakana Namazu side-by-side, then vote on the output you prefer.

Grok 4.5
✓ Preferred
Sakana Namazu
Open in Playground

FAQ

Common questions about Grok 4.5 vs Sakana Namazu.

Which is better, Grok 4.5 or Sakana Namazu?

Grok 4.5 and Sakana Namazu are closely matched on the LLM Stats Score at 47.0 and 43.2. Grok 4.5 is made by xAI and Sakana Namazu is made by Sakana AI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Grok 4.5 compare to Sakana Namazu in benchmarks?

Grok 4.5 scores GPQA: 93.0%, Terminal-Bench 2.1: 83.3%, SWE-Bench Pro: 64.7%, AA-Omniscience Index: 63.0%, DeepSWE 1.0: 62.0%. Sakana Namazu scores AIME 2026: 96.7%, LiveCodeBench v6: 90.3%, MMLU-Pro: 90.3%.

Is Grok 4.5 cheaper than Sakana Namazu?

Sakana Namazu is 2.1x cheaper for input tokens. Grok 4.5 costs $2.00/M input and $6.00/M output via xai. Sakana Namazu costs $0.95/M input and $4.00/M output via sakana.

What are the context window sizes for Grok 4.5 and Sakana Namazu?

Grok 4.5 supports 500K tokens and Sakana Namazu supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Grok 4.5 and Sakana Namazu?

Key differences include LLM Stats Score (47.0 vs 43.2), context window (500K vs 256K), input pricing ($2.00 vs $0.95/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok 4.5 and Sakana Namazu?

Grok 4.5 is developed by xAI and Sakana Namazu is developed by Sakana AI.

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