GPT-5.1 High vs Inkling 2 Small
Inkling 2 Small leads the LLM Stats Score 47.2 to 34.5. Inkling 2 Small is 7.2x cheaper per token.
OpenAI · Thinking Machines Lab · Updated for 2026
Which is better?
Inkling 2 Small leads the overall LLM Stats Score 47.2 to 34.5, ranking #40 overall.
In the 1 individual benchmarks reported for both models, Inkling 2 Small wins 1; this is a narrower head-to-head signal than the composite indexes.
On price, Inkling 2 Small is roughly 7.2x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GPT-5.1 High also accepts a larger context window (400,000 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-5.1 High
- you process long inputs — it offers a 400,000 token context window
Choose Inkling 2 Small
- overall performance matters — it scores 47.2 and ranks #40 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- cost matters — it's about 7.2x cheaper per token
- you want the most recent training data — it shipped Nov 2026
At a glance
The differences that matter most.
Individual benchmarks
3 reported for GPT-5.1 High · 11 for Inkling 2 Small
GPT-5.1 High outperforms in 0 benchmarks, while Inkling 2 Small is better at 1 benchmark (GPQA).
Inkling 2 Small significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, GPT-5.1 High ($1.25/1M tokens) is 4.2x more expensive than Inkling 2 Small ($0.30/1M tokens).
For output processing, GPT-5.1 High ($10.00/1M tokens) is 10.0x more expensive than Inkling 2 Small ($1.00/1M tokens).
In conclusion, GPT-5.1 High is more expensive than Inkling 2 Small.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-5.1 High accepts 400,000 input tokens compared to Inkling 2 Small's 256,000 tokens. Only GPT-5.1 High specifies output context (128,000 tokens).
Input capabilities
Documented input modalities across available providers
Both GPT-5.1 High and Inkling 2 Small support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GPT-5.1 High
Inkling 2 Small
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
GPT-5.1 High was released on 2025-11-12, while Inkling 2 Small was released on 2026-11-05.
Inkling 2 Small is 12 months newer than GPT-5.1 High.
Nov 12, 2025
1.0 years ago
Nov 5, 2026
1 weeks ago
11mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
GPT-5.1 High is available from OpenAI. Inkling 2 Small is available from Thinking Machines Lab.
GPT-5.1 High
Inkling 2 Small
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-5.1 High and Inkling 2 Small side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-5.1 High vs Inkling 2 Small.