OpenChatOpenchat 3.5
Openchat 3.5 is an OpenChat open-weights model, released 18 Dec 2023. Its best configuration ranks #704 of 785 on the BenchLeader Index at 38.9 ±1.4, in the lower half. The ± is the point: 208 other configurations score within that range, so they and this one cannot be told apart on quality alone — price and speed are what separate them. It scores highest in composite (35) and lowest in human preference (31). Last measured 22 Oct 2026.
- Blended price
- –
- Output speed
- –
- First answer
- –
- Context
- 8k
- Full answer
- –
- Cost per run
- –
- Released
- 18 Dec 2023
- Overall index39
- Reasoning31
- Coding33
- Maths31
- Human preference31
- Composite35
How its index has moved
19 Sept 2026 to 23 Oct 2026The index is recomputed from scratch every day, so a line moves when a new benchmark result lands, when a publisher revises a score, or when the models it is normalised against change. Early movement usually means the score is still settling.
Benchmark results
See all LLM benchmarks. One column per reasoning effort. Rank is among every configuration of every model on that benchmark. Hover a score for the run it came from.
Reasoning
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| Arena Hard Prompts | 1188#320 | Arena (LMArena) | |
| GPQA Diamond (AA)not in index | 23.0%#551 | Artificial Analysis | |
| Humanity's Last Exam (AA)not in index | 4.8%#473 | Artificial Analysis |
Coding
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| Arena Coding | 1230#316 | Arena (LMArena) |
Maths
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| Arena Maths | 1159#315 | Arena (LMArena) |
Instruction following
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| Arena Instruction Followingnot in index | 1156#321 | Arena (LMArena) |
Human preference
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| Arena Text | 1183#319 | Arena (LMArena) | |
| Arena Creative Writingnot in index | 1185#303 | Arena (LMArena) | |
| Arena Multi-turnnot in index | 1157#314 | Arena (LMArena) | |
| Arena Longer Queriesnot in index | 1185#316 | Arena (LMArena) |
Composite
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| AA Intelligence Index v4.3.2 | 5.3#590 | Artificial Analysis |
More from OpenChat
See also
Questions people ask
- What are Openchat 3.5's benchmark scores?
- As of 25 Oct 2026, Openchat 3.5 scores 38.9 ±1.4 on the BenchLeader Index, strongest in composite (35) and weakest in human preference (31). That rests on 5 independent benchmark results, and every score on this page links to its publisher.
- How does Openchat 3.5 rank?
- Openchat 3.5 is #704 of 785 ranked configurations on 25 Oct 2026. 208 other configurations score within its margin, so the exact position matters less than the band. The leader is Claude Opus 5.5 (max effort) at 72.6.
- When was Openchat 3.5 released?
- OpenChat released Openchat 3.5 on 18 Dec 2023.
Data as of 25 Oct 2026. Compare with another model.
Cite as: BenchLeader, “Openchat 3.5: benchmarks, pricing, speed and rank”, data as of 25 Oct 2026, https://www.benchleader.com/models/openchat-3-5.