Compare / Claude Sonnet 5.5 vs Inkling
Claude Sonnet 5.5 vs Inkling
Which is cheaper, which is more capable, and which does better at each kind of work, from 9 results on 3 sources that measured both models.
Claude Sonnet 5.5 or Inkling? The short answer
- Inkling is cheaper: $1.72 against $4.00 per million tokens, 2.3 times less.
- Claude Sonnet 5.5 scores higher on the Artificial Analysis Intelligence Index: 56.0 against 25.0.
- Inkling writes faster: 166 tokens a second against 137.
- On our business benchmarks, Claude Sonnet 5.5 ranks higher for agents and tool use, professional work, reasoning and knowledge and sticking to the facts.
At a glance
| Claude Sonnet 5.5 | Inkling | |
|---|---|---|
| Price per million tokens | $2.00 in · $10.00 out | $0.95 in · $4.05 out |
| Blended (3 in : 1 out) | $4.00 | $1.72 |
| Cheapest host, blended | $4.00 (Google) | $1.72 (DeepInfra, FP8) |
| Intelligence Index | 56.0 | 25.0 |
| Spring Prompt overall | 64 | – |
| Output speed, tokens a second | 137 | 166 |
| Context window | 1,000,000 tokens | 524,288 tokens |
| Weights | Closed | Open |
| Developer based in | the US | the US |
Prices are the developer's list price where we have read it, otherwise the typical host on OpenRouter; see every model's price. Intelligence and speed from Artificial Analysis.
Which is better for what
Each model's rank among models available today, for each kind of work, from our own benchmarks and licensed sources. The better rank is in green.
| Use case | Claude Sonnet 5.5 | Inkling |
|---|---|---|
| Product listingsTurning a sparse product feed and photos into listings that can go live | 10 of 19 | not measured |
| Decks from an analysisTurning a finished analysis into a deck you could present as it is | 4 of 18 | not measured |
| Marketing planningPlanning a year of ad spend without overspending | 4 of 18 | not measured |
| Agents and tool useMulti-step tasks with tools: support desks, coding agents, function calls | 1 of 161 | 56 of 161 |
| Professional workReal tasks from banking, consulting and law, business documents and freelance projects | 1 of 51 | 45 of 51 |
| Reasoning and knowledgeHard questions across science, maths and general knowledge | 2 of 195 | 64 of 195 |
| WritingWhat people prefer in blind comparisons, and judged writing quality | not measured | 59 of 187 |
| Sticking to the factsSummarising without inventing things, and factual answers | 61 of 153 | 75 of 153 |
| Speed under pressureGood decisions against a real clock (fast chess) | 21 of 21 | not measured |
Every shared result
| Benchmark | Metric | Claude Sonnet 5.5 | Inkling |
|---|---|---|---|
| APEX-Agentsreported | Tasks passed% of tasks | 75.5% | 33.8% |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 56.0 | 25.0 |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 55.0% | 31.9% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 82.7% | 77.3% |
| Artificial Analysisreported | Output speedtokens per second | 137 | 166 |
| Artificial Analysisreported | SciCode% of problems | 61.0% | 47.0% |
| Artificial Analysisreported | Terminal-Bench 4.0% of tasks | 63.6% | 1.0% |
| Artificial Analysisreported | Time to first answer tokenseconds | 0.67 | 14.3 |
| SimpleQA Verified (Epoch AI)reported | Correct answers% of questions | 46.5% | 40.3% |
Bold green marks the better value on that metric. Where a source reports ranges that overlap, the difference may not be meaningful; see the benchmark page for ranges.
Quick answers
Is Claude Sonnet 5.5 better than Inkling?
It depends on the task. Among models available today, on our benchmarks and licensed sources, Claude Sonnet 5.5 ranks higher for agents and tool use, professional work, reasoning and knowledge and sticking to the facts.
Which is cheaper, Claude Sonnet 5.5 or Inkling?
Inkling costs $1.72 per million tokens (three input to one output), against $4.00 for Claude Sonnet 5.5.
Which is faster, Claude Sonnet 5.5 or Inkling?
Inkling writes about 166 tokens a second on its usual API, against 137 for Claude Sonnet 5.5 (Artificial Analysis).
Run Claude Sonnet 5.5 and Inkling on your own prompt
Benchmarks aren't your data. Try both side by side in the playground, with the cost of every answer.