Claude Opus 5.5 vs Inkling
Claude Opus 5.5 leads the LLM Stats Score 60.3 to 37.2. Inkling is 4.6x cheaper per token.
Anthropic · Thinking Machines Lab · Updated for 2026
Which is better?
Claude Opus 5.5 leads the overall LLM Stats Score 60.3 to 37.2, ranking #1 overall.
In the 2 individual benchmarks reported for both models, Claude Opus 5.5 wins 2; this is a narrower head-to-head signal than the composite indexes.
On price, Inkling is roughly 4.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Claude Opus 5.5 also accepts a larger context window (1,000,000 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 Claude Opus 5.5
- overall performance matters — it scores 60.3 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 2 of 2 exact shared results
- you process long inputs — it offers a 1,000,000 token context window
- you want the most recent training data — it shipped Sep 2026
Choose Inkling
- cost matters — it's about 4.6x cheaper per token
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
31 reported for Claude Opus 5.5 · 16 for Inkling
Claude Opus 5.5 outperforms in 2 benchmarks (Humanity's Last Exam (no tools, text-only), Humanity's Last Exam (with tools, text-only)), while Inkling is better at 0 benchmarks.
Claude Opus 5.5 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, Claude Opus 5.5 ($4.00/1M tokens) is 4.2x more expensive than Inkling ($0.95/1M tokens).
For output processing, Claude Opus 5.5 ($20.00/1M tokens) is 4.9x more expensive than Inkling ($4.05/1M tokens).
In conclusion, Claude Opus 5.5 is more expensive than Inkling.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Claude Opus 5.5 accepts 1,000,000 input tokens compared to Inkling's 524,288 tokens. Inkling can generate longer responses up to 524,288 tokens, while Claude Opus 5.5 is limited to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Claude Opus 5.5 and Inkling support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude Opus 5.5
Inkling
License
Usage and distribution terms
Claude Opus 5.5 is licensed under a proprietary license, while Inkling uses Apache 2.0.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
Claude Opus 5.5 was released on 2026-09-22, while Inkling was released on 2026-07-21.
Claude Opus 5.5 is 2 months newer than Inkling.
Sep 22, 2026
1 weeks ago
2mo newerJul 21, 2026
2 months ago
Knowledge Cutoff
When training data ends
Claude Opus 5.5 has a documented knowledge cutoff of 2026-06-01, while Inkling's cutoff date is not specified.
We can confirm Claude Opus 5.5's training data extends to 2026-06-01, but cannot make a direct comparison without Inkling's cutoff date.
Jun 2026
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Provider Availability
Claude Opus 5.5 is available from Anthropic. Inkling is available from DeepInfra.
Claude Opus 5.5
Inkling
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Opus 5.5 and Inkling side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Opus 5.5 vs Inkling.