Inkling Thinking
The thinking version of Thinking Machines' 975B-parameter open-weights Mixture-of-Experts generalist with 41B active parameters. It reasons natively over text, images, and audio, and is built for agentic coding, tool use, detailed instruction following, long-context work, and controllable thinking effort.
- Reasoning
- Vision
- Audio Input
- Tool Calling
- Structured Output
Added Jul 15, 2026
Model weightsPricing
Auto routing · per 1M tokens- Input
- $1.00
- Output
- $4.05
- Cache read
- $0.17
Specifications
- Context window
- 1M
- Max output
- 32.8K
- Parameters
- 975B / 41B
- Total / active
Benchmarks
Benchmarks
Sourced from LMArena.
Arena Score
1442.5
Overall Rank
#95 / 421
Votes
50,718
Confidence Interval
1438.4 - 1446.6
Category Scores
Coding
#91 / 416
13,407 votes
1494.0
Math
#39 / 404
2,332 votes
1479.0
Longer Query
#111 / 399
23,559 votes
1442.2
Creative Writing
#132 / 419
11,132 votes
1388.7
Instruction Following
#104 / 421
18,192 votes
1426.7
Hard Prompts
#94 / 421
33,073 votes
1463.1
Additional Categories22
Japanese
#57 / 288
780 votes
1436.5
Industry Mathematical
#70 / 402
2,740 votes
1465.7
Korean
#78 / 289
813 votes
1404.2
Polish
#85 / 243
751 votes
1446.9
Expert
#90 / 371
5,649 votes
1473.8
Industry Software And It Services
#91 / 421
19,285 votes
1483.7
Non English
#91 / 421
30,357 votes
1431.4
French
#94 / 301
1,652 votes
1463.1
Industry Life And Physical And Social Science
#94 / 419
8,255 votes
1459.5
Spanish
#94 / 304
1,611 votes
1438.8
Chinese
#95 / 395
3,937 votes
1478.5
Russian
#96 / 385
6,469 votes
1437.9
German
#97 / 320
786 votes
1438.1
Exclude Ties
#98 / 421
37,655 votes
1440.4
Industry Business And Management And Financial Operations
#99 / 414
9,330 votes
1442.8
Multi Turn
#101 / 419
7,926 votes
1446.2
English
#102 / 421
20,352 votes
1447.6
Hard Prompts English
#103 / 419
13,253 votes
1463.4
Industry Medicine And Healthcare
#107 / 391
3,426 votes
1454.2
Industry Legal And Government
#111 / 393
4,132 votes
1442.7
Industry Writing And Literature And Language
#114 / 420
14,346 votes
1407.0
Industry Entertainment And Sports And Media
#120 / 419
13,302 votes
1395.9
Published 2026-11-11 · Matched as Inkling · CC BY 4.0
LMArena DatasetLeaderboard results
These leaderboards tested Inkling, another version of this model.
| Benchmark | Score | Rank on NanoGPT |
|---|---|---|
Epoch AI Benchmarking Hub Epoch AI data, CC BY 4.0 · Updated Nov 14, 2026 | ||
Epoch Capabilities Index | 148.4 | #68 of 115 |
FrontierMath v2 (Tiers 1–3) | 33.3% | #66 of 83 |
GPQA Diamond | 88.3% | #52 of 119 |
SimpleQA Verified | 40.3% | #51 of 82 |
FrontierMath v2 (Tier 4) | 4.9% | #62 of 67 |
OTIS Mock AIME 2024–2025 | 88.9% | #61 of 121 |
Chess Puzzles | 21.0% | #63 of 82 |
Sierra τ-bench tau2-bench data, MIT · Updated Aug 4, 2026 | ||
τ³-Banking | 25.0% | #15 of 18 |
EQ-Bench 4 | 1212 | #16 of 31 |
Creative Writing v3 | 1609 | #43 of 96 |
Longform Writing | 72.5 | #35 of 97 |
Filtered and ranked to models on NanoGPT.
Providers
Choose or restrict providers with the API. Provider-selection prices include the selection markup. Provider selection guide · Pricing API (JSON, USD per 1K tokens)
 | $1.00 | $4.05 | $0.17 | N/A | N/A |
| $1.00 | $4.05 | $0.17 | N/A | N/A |
| $1.05 | $4.25 | $0.179 | N/A | N/A | |
| $1.05 | $4.25 | $0.179 | N/A | N/A |
Batch rows for this model use normal routing and cost the same as standard API requests. Set provider in a row to choose a provider.