Compare / head-to-head
GPT-6.1 Solvs
Inkling
GPT-6.1 Sol leads 20 of 20 shared benchmarks. Inkling is 2.4x cheaper per token. GPT-6.1 Sol has the larger context window (1.1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
20 – 0
GPT-6.1 Sol leads
Cheaper per token
Inkling
2.4x cheaper, input + output
Larger context
GPT-6.1 Sol
1.1M tokens
Providers
2 providers
OpenAI · Thinking Machines Lab
GPT-6.1 Sol
OpenAI · released 2026-09-29
textvision
Quality
Benchmark matrix
20 shared · 4 only GPT-6.1 Sol · 18 only Inkling| Benchmark | GPT-6.1 Sol | Inkling | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 20 | ||||
| GPQA Diamond | 95.4% ↗epoch run | 88.3% ↗epoch run | +7.1 pt | GPT-6.1 Sol |
| LMArena Elo | 1483.2 ↗ | 1441.4 ↗ | +41.8 | GPT-6.1 Sol |
| APEX-Agents (Mercor) | 60% ↗ | 33.8% ↗ | +26.2 pt | GPT-6.1 Sol |
| Chess Puzzles (Epoch AI run) | 61% ↗epoch run | 21% ↗epoch run | +40 pt | GPT-6.1 Sol |
| FrontierMath Tier 4 v2 (Epoch AI run) | 100% ↗epoch run | 4.9% ↗epoch run | +95.1 pt | GPT-6.1 Sol |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 93.7% ↗epoch run | 33.3% ↗epoch run | +60.4 pt | GPT-6.1 Sol |
| LiveBench Agentic Coding (LiveBench) | 56.8% ↗ | 49.4% ↗ | +7.4 pt | GPT-6.1 Sol |
| LiveBench Coding (LiveBench) | 80.7% ↗ | 71% ↗ | +9.7 pt | GPT-6.1 Sol |
| LiveBench Data Analysis (LiveBench) | 82.7% ↗ | 72.8% ↗ | +9.9 pt | GPT-6.1 Sol |
| LiveBench Instruction Following (LiveBench) | 74.2% ↗ | 70.1% ↗ | +4.1 pt | GPT-6.1 Sol |
| LiveBench Language (LiveBench) | 90.1% ↗ | 73.5% ↗ | +16.6 pt | GPT-6.1 Sol |
| LiveBench Mathematics (LiveBench) | 96.8% ↗ | 88.4% ↗ | +8.4 pt | GPT-6.1 Sol |
| LiveBench Reasoning (LiveBench) | 92.6% ↗ | 78.3% ↗ | +14.3 pt | GPT-6.1 Sol |
| LMArena Agent (LMArena) | 0.1123 ↗ | -0.1086 ↗ | +0.2 | GPT-6.1 Sol |
| LMArena WebDev (LMArena) | 1757.8 ↗ | 1412.6 ↗ | +345.2 | GPT-6.1 Sol |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 100% ↗epoch run | 88.9% ↗epoch run | +11.1 pt | GPT-6.1 Sol |
| SAGE (Vals AI) | 46.5% ↗ | 36.6% ↗ | +9.9 pt | GPT-6.1 Sol |
| SimpleBench (SimpleBench) | 82.9% ↗ | 50% ↗ | +32.9 pt | GPT-6.1 Sol |
| SimpleQA Verified | 73.9% ↗epoch run | 43.9% ↗ | +30 pt | GPT-6.1 Sol |
| Terminal-Bench 4.0 (Vals AI) | 55.1% ↗ | 0.5% ↗ | +54.6 pt | GPT-6.1 Sol |
| Only GPT-6.1 Sol reports · 4 | ||||
| EBR-bench (Epoch AI run) | 54.3% ↗epoch run | not reported | — | — |
| Furniture Assembly (Epoch AI run) | 80% ↗epoch run | not reported | — | — |
| LMArena Vision (LMArena) | 1290.6 ↗ | not reported | — | — |
| Mystery Game Puzzles (Epoch AI run) | 80% ↗epoch run | not reported | — | — |
| Only Inkling reports · 18 | ||||
| SWE-bench Verified | not reported | 77.6% ↗ | — | — |
| AIME 2026 | not reported | 97.1% ↗ | — | — |
| Audio MC | not reported | 56.6% ↗ | — | — |
| BrowseComp (w/ ctx management) | not reported | 77.1% ↗ | — | — |
| CharXiv RQ | not reported | 78.1% ↗ | — | — |
| CharXiv RQ (with python) | not reported | 82% ↗ | — | — |
| FrontierSWE V2 (Proximal Labs) | not reported | 4.1% ↗ | — | — |
| Global-MMLU-Lite | not reported | 88.7% ↗ | — | — |
| IFBench | not reported | 79.8% ↗ | — | — |
| MCP Atlas | not reported | 76% ↗ | — | — |
| MMAU | not reported | 77.2% ↗ | — | — |
| SWE-bench Pro (public) | not reported | 54.3% ↗ | — | — |
| tau2-bench Banking Knowledge (Sierra) | not reported | 25% ↗ | — | — |
| Terminal-Bench 2.1 (best harness) | not reported | 63.8% ↗ | — | — |
| Toolathlon Verified | not reported | 45.5% ↗ | — | — |
| Toolathlon-Verified (HKUST) | not reported | 45.5% ↗ | — | — |
| VoiceBench | not reported | 91.4% ↗ | — | — |
| WeirdML (Håvard Tveit Ihle) | not reported | 32.3% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is GPT-6.1 Sol minus Inkling in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | GPT-6.1 Sol | Inkling | Edge |
|---|---|---|---|
| Context window | 1.1M tokens | 1M tokens | GPT-6.1 Sol |
| Max output | 128K tokens | — | — |
| Input price / 1M | $2 ↗ | $1 ↗ | Inkling |
| Output price / 1M | $10 ↗ | $4.05 ↗ | Inkling |
| Cached input / 1M | $0.1 ↗ | $0.17 ↗ | GPT-6.1 Sol |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $12 | $5.05 | Inkling |
| Modalities | text · vision | text · vision · audio | Inkling |
| Released | 2026-09-29 | 2026-07-15 | — |
| Cited benchmark scores | 24 | 39 | — |
Reliability
Provider status
Live from /statusMore matchups
GPT-6.1 Sol vs …
Models sharing the most benchmarksMore matchups
Inkling vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run GPT-6.1 Sol and Inkling on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.