o1
Unavailable in this round
OpenAI
With o1, OpenAI introduced a model that uses additional thinking time before answering. Reinforcement learning trained it to check different approaches and recognize mistakes while reasoning. That distinguished the o-series from GPT models that answered directly.
o3 later extended the reasoning line with agentic tool use in ChatGPT, including combinations of web search and Python.
The LLM comparison hub's selected-panel index averages rank percentiles from 65 documented comparison cohorts. Benchmark meta-scores are shown in the benchmark section.
Benchmark meta-analysis
These Gradually indexes place selected published measurements on a 0 to 100 scale. They are not accuracy percentages and do not guarantee results in your application.
Retrieval dates of the sources used 2026-08-05 - 2026-10-19
Index below 1 / 100
provisional
Published configurations differ within this comparison cohort. Treat the index as provisional.
Index below 1 / 100
provisional
Published configurations differ within this comparison cohort. Treat the index as provisional.
Index below 1 / 100
provisional
Published configurations differ within this comparison cohort. Treat the index as provisional.
Index below 1 / 100
provisional
Published configurations differ within this comparison cohort. Treat the index as provisional.
Index below 1 / 100
provisional
Published configurations differ within this comparison cohort. Treat the index as provisional.
Index below 1 / 100
provisional
Index below 1 / 100
provisional
Published configurations differ within this comparison cohort. Treat the index as provisional.
Index 1.8 / 100
provisional
Published configurations differ within this comparison cohort. Treat the index as provisional.
Index below 1 / 100
provisional
Published configurations differ within this comparison cohort. Treat the index as provisional.
Index below 1 / 100
provisional
Published configurations differ within this comparison cohort. Treat the index as provisional.
Index below 1 / 100
provisional
Published configurations differ within this comparison cohort. Treat the index as provisional.
Method version: benchmark-meta-score-v3
The index includes active measurements from reviewed primary sources when at least five models are compared in the same documented comparison slice across dataset, harness, agent, tools, and trial count. Each benchmark series and evaluator contributes one shared setup slice from the newest capture. When one source and series include several explicitly documented reasoning tiers, the highest documented tier (none through max) is selected, never the best result value. The explicit source label “Non-reasoning” is treated as none. Unknown or ambiguous tiers exclude the model from that series. Within each series, percentages and rates are logit-transformed, other units stay unchanged, and all values are then standardized. A one-factor model then estimates one shared strength per model and, per series, how sharply it separates the models. Area scores move away from that strength only as far as the model's own results in the area support. The overall score weights the core areas at 75% and finance, law and health at 25%. It requires at least eight test series from two sources and three areas. The 0 to 100 scale refers to a fixed reference group of 29 language models whose average sits at 50.
Published model-specific parameters can differ. This is not a controlled experiment; comparisons with such differences are marked provisional.
Unmeasured series are not entered as zero. Where a model has no own results in a core area, its overall strength stands in, and the note “estimated without own results in …” names the area. Fewer test series lead to a larger standard error.
The 95% interval follows from the standard error of 200 recalculations with randomly redrawn test families. It describes how precisely the recorded test series determine the value. It is no prediction for future tasks or for later recalculations with other participants.
The source count is not a count of independent experiments.
OECD handbook on composite indicatorsAll 12 test families and 12 of 12 raw measurements are listed here. The complete calculation for every model is available in the JSON export.
Family weight in the fixed test panel (informative): 2.14 % · Coverage of this test family: 100 %
Published configurations differ within this cohort.
Family weight in the fixed test panel (informative): 1.53 % · Coverage of this test family: 50 %
Published configurations differ within this cohort.
Family weight in the fixed test panel (informative): 0.89 % · Coverage of this test family: 100 %
Family weight in the fixed test panel (informative): 0.89 % · Coverage of this test family: 100 %
Family weight in the fixed test panel (informative): 2.68 % · Coverage of this test family: 50 %
Published configurations differ within this cohort.
Family weight in the fixed test panel (informative): 0.71 % · Coverage of this test family: 100 %
Published configurations differ within this cohort.
Family weight in the fixed test panel (informative): 2.08 % · Coverage of this test family: 100 %
Published configurations differ within this cohort.
Family weight in the fixed test panel (informative): 2.14 % · Coverage of this test family: 100 %
Published configurations differ within this cohort.
Family weight in the fixed test panel (informative): 2.78 % · Coverage of this test family: 100 %
Published configurations differ within this cohort.
Family weight in the fixed test panel (informative): 2.14 % · Coverage of this test family: 100 %
Published configurations differ within this cohort.
Family weight in the fixed test panel (informative): 3.57 % · Coverage of this test family: 100 %
Published configurations differ within this cohort.
Family weight in the fixed test panel (informative): 1.19 % · Coverage of this test family: 100 %
Published configurations differ within this cohort.
Each evaluator measures different capabilities under its own conditions. Test series, composite indices and their components stay separate. The detailed results below retain their scales, configurations and source dates.
| Evaluator | Test series | Composite indices | Recorded active measurements |
|---|---|---|---|
| Artificial Analysis | 2 | 0 | 3 |
| Vals AI | 10 | 0 | 55 |
| Princeton HAL | 2 | 0 | 12 |
Coverage is not a quality ranking. Overlapping tests and multiple settings do not count as independent experiments. Vendor claims, historical and disputed results are excluded from this overview and remain labelled in the detailed evidence.
Page 1 of 9
Reliability evaluation on 165 GAIA tasks with repetitions and perturbations. Accuracy, reliability, consistency, predictability, robustness, and safety are separate metrics.
| Sub-task | o1 (This model) | Claude Opus 4.5 | Claude Opus 4.7 | Gemini 3.1 Pro Preview | Gemini 3.5 Flash | GPT-4o mini | Gemini 2.5 Pro | Gemini 2.5 Flash | GPT-5.5 |
|---|---|---|---|---|---|---|---|---|---|
| Consistency | 0.68 | 0.81 (best value in this row) | 0.81 (best value in this row) | 0.76 | 0.75 | 0.73 | 0.72 | 0.7 | 0.61 |
| Predictability | 0.68 | 0.84 (best value in this row) | 0.73 | 0.78 | 0.8 | 0.58 | 0.71 | 0.64 | 0.8 |
| Reliability | 0.79 | 0.85 (best value in this row) | 0.84 | 0.82 | 0.84 | 0.76 | 0.78 | 0.74 | 0.79 |
| Robustness | 1 (best value in this row) | 0.91 | 0.99 | 0.94 | 0.96 | 0.97 | 0.91 | 0.87 | 0.95 |
| Safety | 1 (best value in this row) | 1 (best value in this row) | 1 (best value in this row) | 1 (best value in this row) | 1 (best value in this row) | 1 (best value in this row) | 1 (best value in this row) | 1 (best value in this row) | 1 (best value in this row) |
Unit: ratinghigher is betterAs of August 6, 2026Source: Princeton HALbars scaled within each row, not across rows
Accuracy
Reliability evaluation on 165 GAIA tasks with repetitions and perturbations. Accuracy, reliability, consistency, predictability, robustness, and safety are separate metrics.
higher is betterAs of August 6, 2026Scale: 0% - 100%
26 cleaned customer-service tasks involving dialogue, policy compliance, and mutating backend tools. The cleaned subset removes 24 broken or ambiguous tasks. Accuracy and reliability dimensions measure different properties.
| Sub-task | o1 (This model) | Claude Opus 4.7 | Claude Opus 4.5 | GPT-5.5 | Gemini 3.1 Pro Preview | Gemini 3.5 Flash | Gemini 2.5 Flash | Gemini 2.5 Pro | GPT-4o mini |
|---|---|---|---|---|---|---|---|---|---|
| Consistency | 0.71 | 0.88 (best value in this row) | 0.84 | 0.84 | 0.81 | 0.78 | 0.75 | 0.74 | 0.74 |
| Predictability | 0.74 | 0.87 (best value in this row) | 0.85 | 0.84 | 0.83 | 0.82 | 0.6 | 0.78 | 0.35 |
| Reliability | 0.81 | 0.89 (best value in this row) | 0.88 | 0.89 (best value in this row) | 0.86 | 0.86 | 0.72 | 0.81 | 0.67 |
| Robustness | 0.98 (best value in this row) | 0.91 | 0.97 | 0.97 | 0.94 | 0.97 | 0.82 | 0.93 | 0.93 |
| Safety | 0.91 | 0.94 | 0.98 | 0.96 | 0.97 | 0.99 (best value in this row) | 0.9 | 0.92 | 0.85 |
Unit: ratinghigher is betterAs of August 5, 2026Source: Princeton HALbars scaled within each row, not across rows
Accuracy
26 cleaned customer-service tasks involving dialogue, policy compliance, and mutating backend tools. The cleaned subset removes 24 broken or ambiguous tasks. Accuracy and reliability dimensions measure different properties.
higher is betterAs of August 5, 2026Scale: 0% - 100%
Page 1 of 9
One SVG prompt and fixed output settings. Captures are shown only with 0 reported reasoning tokens or documented lack of reasoning controls. Identical test conditions do not make the models' internal compute identical.
Unavailable in this round
A community classic for free-form SVG drawing.
o1

Reasoning (requested): high
Visually reviewed. This individual test does not establish overall model quality.
Generate an SVG of a pelican riding a bicycle
Token limit including reasoning: 8,192 tokens
Task origin (Simon Willison)24.9 / 100
| Specification | Value and source |
|---|---|
| Weights | ProprietarySource not specified |
| Context window | 200,000 tokensSource |
| Knowledge cutoff | October 1, 2023Source |
| Notes | Reasoning model, parameter count not disclosedSource not specified |
| API model ID | o1Source |
| Maximum output | 100,000 tokensSource |
| Knowledge cutoff | 2023-10-01Source |
| Input | Text, ImageSource |
| Output | TextSource |
| Reasoning mode | highSource |
| API interfaces | Responses API, Chat Completions APISource |
| Tool calling | YesSource |
| Structured output | YesSource |
OpenAI presents o3, released April 16, 2025, as the successor generation to o1, its prior full-size reasoning model (OpenAI skipped the name "o2" for trademark reasons).
OpenAI o3 and o4-mini system card / announcement (2026-09-19)| Type | Evidence and data date |
|---|---|
| Input | Documented modalities. Retrieved September 8, 2026. |
| Output | Documented modalities. Retrieved September 8, 2026. |
| Research status | Research date September 8, 2026. 3 source URLs checked. This documents the inspected sources, not an exhaustive inventory of every publication. |
| Not found in the inspected sources | parameters-billions Original wording OpenAI API and release pages do not publish parameter counts. |
| Not found in the inspected sources | independent-benchmarks Original wording Only exact OpenAI appendix columns were used in this artifact. |
| Unresolved | release-date Original wording The o1 family launched in September 2024, while the stable API snapshot was released in December 2024; this record does not choose between those distinct dates. |
| Not found in the inspected sources | AA benchmark rows Original wording No exact-model row in the selected public JSON-LD datasets (some pages only expose N/A or unknown metric summaries). |
| Additional source | Context window data · Introducing OpenAI o1 · Editorial description reviewed October 4, 2026 |
| Additional source | Artificial Analysis (retrieved October 19, 2026) |
| Additional source | Artificial Analysis (retrieved October 19, 2026) |
| Additional source | Princeton HAL (retrieved August 6, 2026) |
| Additional source | Princeton HAL (retrieved August 5, 2026) |
| Additional source | LongBench (retrieved September 2, 2026) |
| Additional source | Vals AI (retrieved October 15, 2026) |
| Additional source | Vals AI (retrieved October 15, 2026) |
| Additional source | Vals AI (retrieved October 15, 2026) |
| Additional source | Vals AI (retrieved October 15, 2026) |
| Additional source | Vals AI (retrieved October 15, 2026) |
| Additional source | Vals AI (retrieved October 15, 2026) |
| Additional source | Vals AI (retrieved October 15, 2026) |
| Additional source | Vals AI (retrieved October 15, 2026) |
| Additional source | Vals AI (retrieved October 15, 2026) |
| Additional source | Vals AI (retrieved October 15, 2026) |
| Additional source | OpenAI (retrieved September 8, 2026) |
| Additional source | Learning to reason with LLMs · Editorial description reviewed October 4, 2026 |
| Additional source | OpenRouter: Popularity index (derived), CC BY 4.0 |
| Additional source | Vercel AI Gateway: Popularity index (derived), CC BY 4.0 |
| Additional source | Ollama: cumulative downloads for the popularity index |
| Additional source | Replicate: cumulative runs for the popularity index |
| Additional source | Google Trending Now: limited feed selection for Germany and the US |
| Additional source | Creative Commons Attribution 4.0 |
| Additional source | OpenAI o3 and o4-mini system card / announcement (2026-09-19) |