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GPT-6 Astra vs Inkling-Small

GPT-6 Astra leads the LLM Stats Score 59.6 to 38.5. Inkling-Small is 38.1x cheaper per token.

OpenAI · Thinking Machines Lab · Updated for 2026

Which is better?

GPT-6 Astra leads the overall LLM Stats Score 59.6 to 38.5, ranking #1 overall.

In the 4 individual benchmarks reported for both models, GPT-6 Astra wins 4; this is a narrower head-to-head signal than the composite indexes.

On price, Inkling-Small is roughly 38.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

GPT-6 Astra also accepts a larger context window (1,050,000 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 GPT-6 Astra

  • overall performance matters — it scores 59.6 and ranks #1 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 4 of 4 exact shared results
  • you process long inputs — it offers a 1,050,000 token context window
  • you want the most recent training data — it shipped Sep 2026

Choose Inkling-Small

  • cost matters — it's about 38.1x cheaper per token
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Core performance indexes
59.6
#1
38.5
#65
57.5
#1
38.1
#63
48.5
#1
29.3
#54
45.7
#1
23.6
#56
Cost, coverage & limits
Benchmark wins
4 of 4
0 of 4
Input price
$10.00 / M
$0.30 / M
Output price
$50.00 / M
$1.20 / M
Context window
1,050,000
256,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

4 shared
Index
GPT-6 Astra
Inkling-Small
36.0#42
33.9#51
41.8#2
20.1#71
35.6#1
21.1#55
39.0#2
17.7#75
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

22 reported for GPT-6 Astra · 24 for Inkling-Small

4 shared

GPT-6 Astra outperforms in 4 benchmarks (ARC-AGI, ARC-AGI v2, BrowseComp, GPQA), while Inkling-Small is better at 0 benchmarks.

GPT-6 Astra significantly outperforms across most benchmarks.

Sun Sep 20 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Inkling-Small costs less

For input processing, GPT-6 Astra ($10.00/1M tokens) is 33.3x more expensive than Inkling-Small ($0.30/1M tokens).

For output processing, GPT-6 Astra ($50.00/1M tokens) is 41.7x more expensive than Inkling-Small ($1.20/1M tokens).

In conclusion, GPT-6 Astra is more expensive than Inkling-Small.*

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

Lowest available price from all providers
Sun Sep 20 2026 • llm-stats.com
OpenAI
GPT-6 Astra
Input tokens$10.00
Output tokens$50.00
Best providerOpenAI
Thinking Machines Lab
Inkling-Small
Input tokens$0.30
Output tokens$1.20
Best providerUnknown Organization
Notice missing or incorrect data?Start an Issue

Context Window

Maximum input and output token capacity

GPT-6 Astra accepts 1,050,000 input tokens compared to Inkling-Small's 256,000 tokens. Inkling-Small can generate longer responses up to 256,000 tokens, while GPT-6 Astra is limited to 128,000 tokens.

OpenAI
GPT-6 Astra
Input1,050,000 tokens
Output128,000 tokens
Thinking Machines Lab
Inkling-Small
Input256,000 tokens
Output256,000 tokens
Sun Sep 20 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both GPT-6 Astra and Inkling-Small support multimodal inputs.

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

GPT-6 Astra

Text
Images
Audio
Video

Inkling-Small

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-6 Astra is licensed under a proprietary license, while Inkling-Small uses Apache 2.0.

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

GPT-6 Astra

Proprietary

Closed source

Inkling-Small

Apache 2.0

Open weights

Release Timeline

When each model was launched

GPT-6 Astra was released on 2026-09-04, while Inkling-Small was released on 2026-07-30.

GPT-6 Astra is 1 month newer than Inkling-Small.

GPT-6 Astra

Sep 4, 2026

2 weeks ago

1mo newer
Inkling-Small

Jul 30, 2026

1 months ago

Knowledge Cutoff

When training data ends

GPT-6 Astra has a documented knowledge cutoff of 2026-04-30, while Inkling-Small's cutoff date is not specified.

We can confirm GPT-6 Astra's training data extends to 2026-04-30, but cannot make a direct comparison without Inkling-Small's cutoff date.

GPT-6 Astra

Apr 2026

Inkling-Small

Provider Availability

GPT-6 Astra is available from OpenAI. Inkling-Small is available from Thinking Machines Lab, DeepInfra.

GPT-6 Astra

openai logo
OpenAI
Input Price:Input: $10.00/1MOutput Price:Output: $50.00/1M

Inkling-Small

thinking-machines logo
Unknown Organization
Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M
deepinfra logo
Deepinfra
Input Price:Input: $0.45/1MOutput Price:Output: $1.20/1M
* 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 GPT-6 Astra and Inkling-Small side-by-side, then vote on the output you prefer.

GPT-6 Astra
✓ Preferred
Inkling-Small
Open in Playground

FAQ

Common questions about GPT-6 Astra vs Inkling-Small.

Which is better, GPT-6 Astra or Inkling-Small?

GPT-6 Astra leads the LLM Stats Score 59.6 to 38.5. GPT-6 Astra is made by OpenAI and Inkling-Small is made by Thinking Machines Lab. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does GPT-6 Astra compare to Inkling-Small in benchmarks?

GPT-6 Astra scores ExploitBench: 100.0%, ARC-AGI-3: 99.9%, ARC-AGI: 98.5%, FrontierMath Tier 4 (v2): 97.6%, GPQA: 96.0%. Inkling-Small scores AIME 2026: 95.5%, VoiceBench Avg: 90.1%, GPQA: 89.5%, Global-MMLU-Lite: 86.7%, ARC-AGI: 84.0%.

Is GPT-6 Astra cheaper than Inkling-Small?

Inkling-Small is 33.3x cheaper for input tokens. GPT-6 Astra costs $10.00/M input and $50.00/M output via openai. Inkling-Small costs $0.30/M input and $1.20/M output via thinking-machines.

What are the context window sizes for GPT-6 Astra and Inkling-Small?

GPT-6 Astra supports 1.1M tokens and Inkling-Small 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 GPT-6 Astra and Inkling-Small?

Key differences include LLM Stats Score (59.6 vs 38.5), context window (1.1M vs 256K), input pricing ($10.00 vs $0.30/M), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-6 Astra and Inkling-Small?

GPT-6 Astra is developed by OpenAI and Inkling-Small is developed by Thinking Machines Lab.