Inkling
Released Jul 15, 2026 · knowledge cutoff unpublished
- Status
- Superseded
- Location
- United States
- Modality
- Multimodal
- Context window
- 1M
- Max output
- —
- Speed
- —
- Price ($/MTok in / out)
- $1.87 / $4.68
- Cost per task
- —
- Open weights
- Yes
Benchmarks7 of 8 reported
GPQA Diamond
SWE-bench Verified
Terminal-Bench 2.1
AIME (latest)
Humanity's Last Exam
LMArena Elo
ARC-AGI-2
MMLU-Pro
Strengths & weaknesses
Strengths
- Built to be fine-tuned — same-day tuning support and an unrestricted licence
- Takes images and long audio natively, still unusual for an open-weights model
- Open at frontier scale from a US lab, with no regional restrictions
Weaknesses
- Weak factuality — it hallucinates at a high rate and needs grounding for anything factual
- Degrades in long multi-turn conversations
- Positioned as a base to customise, not a model to deploy as it ships
Thinking Machines Lab's first production model, released 2026-07-15. All benchmarks are the lab's own model-card figures at effort=0.99; HLE is 29.7% text-only / 46.0% with tools, and the model card reports Global-MMLU-Lite 88.7% rather than MMLU-Pro, so MMLU-Pro, LMArena Elo and ARC-AGI-2 are left null. Pricing is Tinker's 64K-context tier under a limited-time 50% discount ($1.87/$4.68 per MTok, $0.374 cached); the 256K tier is $3.74/$9.36, and OpenRouter hosts list about $1.00/$4.05. Context is 1M with the open weights but capped at 256K on the Tinker API; no max output figure is published. Also reported: SWE-Bench Pro Public 54.3%, Terminal-Bench 2.1 63.8%, GDPval-AA v2 Elo 1238, MMMU Pro 73.5%. ARC-AGI-2 36.5% (and ARC-AGI-1 79.5%) and LMArena Elo 1441 were added later, from the Inkling-Small comparison table and the LMArena text leaderboard respectively.
For developers
API model strings
Not researched
Licence
Not researched
Retirement
No retirement announced
Lineage
No recorded predecessor