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GPT-6 Luna vs Seed 2.0 Lite

GPT-6 Luna leads the LLM Stats Score 43.1 to 31.5.

OpenAI · ByteDance · Updated for 2026

Which is better?

GPT-6 Luna leads the overall LLM Stats Score 43.1 to 31.5, ranking #55 overall.

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

Choose GPT-6 Luna

  • overall performance matters — it scores 43.1 and ranks #55 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you want the most recent training data — it shipped Sep 2026

Choose Seed 2.0 Lite

  • you are already invested in the ByteDance ecosystem

At a glance

The differences that matter most.

GPT-6 Luna
OpenAI
Seed 2.0 Lite
ByteDance
Core performance indexes
LLM Stats Score
43.1
#55
31.5
#132
Reasoning
39.9
#69
31.1
#131
Coding
28.6
#72
17.9
#134
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.10 / M
— / M
Output price
$0.50 / M
— / M
Context window
1,050,000
—

Individual benchmarks

5 reported for GPT-6 Luna · 5 for Seed 2.0 Lite

No common benchmarks found

GPT-6 Luna and Seed 2.0 Litedon'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

Context Window

Maximum input and output token capacity

Only GPT-6 Luna specifies input context (1,050,000 tokens). Only GPT-6 Luna specifies output context (128,000 tokens).

OpenAI
GPT-6 Luna
Input1,050,000 tokens
Output128,000 tokens
ByteDance
Seed 2.0 Lite
Input- tokens
Output- tokens
Sat Oct 24 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both GPT-6 Luna and Seed 2.0 Lite support multimodal inputs.

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

GPT-6 Luna

Text
Images
Audio
Video

Seed 2.0 Lite

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.

GPT-6 Luna

Proprietary

Closed source

Seed 2.0 Lite

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-6 Luna was released on 2026-09-22, while Seed 2.0 Lite was released on 2026-02-14.

GPT-6 Luna is 7 months newer than Seed 2.0 Lite.

GPT-6 Luna

Sep 22, 2026

1 months ago

7mo newer
Seed 2.0 Lite

Feb 14, 2026

8 months ago

Knowledge Cutoff

When training data ends

GPT-6 Luna has a knowledge cutoff of 2026-05-18, while Seed 2.0 Lite has a cutoff of 2024-01-01.

GPT-6 Luna has more recent training data (up to 2026-05-18), making it potentially better informed about events through that date compared to Seed 2.0 Lite (2024-01-01).

GPT-6 Luna

May 2026

2.3 yr newer
Seed 2.0 Lite

Jan 2024

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against GPT-6 Luna and Seed 2.0 Lite side-by-side, then vote on the output you prefer.

GPT-6 Luna
✓ Preferred
Seed 2.0 Lite
Open in Playground

FAQ

Common questions about GPT-6 Luna vs Seed 2.0 Lite.

Which is better, GPT-6 Luna or Seed 2.0 Lite?

GPT-6 Luna leads the LLM Stats Score 43.1 to 31.5. GPT-6 Luna is made by OpenAI and Seed 2.0 Lite is made by ByteDance. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does GPT-6 Luna compare to Seed 2.0 Lite in benchmarks?

GPT-6 Luna scores DeepSWE 1.1: 66.6%, OSWorld 2.0: 52.7%, Agents' Last Exam: 50.9%, FrontierCode 1.1: 42.4%, AutomationBench v1.0.6: 20.7%. Seed 2.0 Lite scores AIME 2025: 93.0%, AIME 2026: 88.3%, GPQA: 85.1%, LiveCodeBench v6: 81.7%, SWE-Bench Verified: 73.5%.

What are the context window sizes for GPT-6 Luna and Seed 2.0 Lite?

GPT-6 Luna supports 1.1M tokens and Seed 2.0 Lite supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-6 Luna and Seed 2.0 Lite?

Key differences include LLM Stats Score (43.1 vs 31.5). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-6 Luna and Seed 2.0 Lite?

GPT-6 Luna is developed by OpenAI and Seed 2.0 Lite is developed by ByteDance.

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