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Step 5 Preview
GPT-3.5 Turbo
GPT-3.5 Turbo is a proprietary model from OpenAI, released Jan 25, 2024. It ranks #356 of 351 on the LMArena text leaderboard with a rating of 1125. It costs $1 per million input tokens and $2 per million output tokens, with a 4K-token context window.
- Developer
- OpenAI
- Released
- Jan 25, 2024
- Context window
- 4K
- Price in / out, per 1M tokens
- $1 / $2
- Weights
- Proprietary
- Inputs
- Text
- Reasoning
- No
- Tool use
- Yes
The rating LMArena published at each update since Dec 6, 2023. Ratings move as votes come in and new models join.
Benchmarks
| Benchmark | Score bar | Accuracy | Rank | Cost / test |
|---|---|---|---|---|
| MedQAMedicine | 58.47% | 84 / 92 | $0.5 / $1.5 | |
| GPQA DiamondReasoning | 30.56% | 137 / 138 | $0.5 / $1.5 |
Vals AI, as of Oct 24, 2026.
LMArena, by category
| Leaderboard | Rating | Rank | Votes |
|---|---|---|---|
| TextLMArena | 1125 | 356 / 351 | 66.2K |
| CodingLMArena | 1136 | 347 / 346 | 11.1K |
| MathLMArena | 1142 | 342 / 339 | 8.6K |
| Creative writingLMArena | 1092 | 364 / 349 | 9.7K |
| Instruction followingLMArena | 1119 | 345 / 351 | 23.5K |
| Hard promptsLMArena | 1108 | 355 / 351 | 18.5K |
| Multi-turnLMArena | 1117 | 347 / 349 | 10.3K |
| Long queriesLMArena | 1121 | 349 / 330 | 6.7K |
| ExpertLMArena | 1070 | 341 / 305 | 437 |
| Legal and governmentIndustries | 1118 | 346 / 325 | 3.6K |
| Medicine and healthcareIndustries | 1074 | 347 / 325 | 3.8K |
| Business and financeIndustries | 1076 | 360 / 344 | 6.9K |
| ChineseLanguages | 1075 | 351 / 328 | 7.6K |
| SpanishLanguages | 1121 | 283 / 249 | 895 |
| GermanLanguages | 1091 | 286 / 261 | 1.9K |
| FrenchLanguages | 1118 | 280 / 252 | 1.3K |
| JapaneseLanguages | 1043 | 258 / 236 | 965 |
LMArena, CC BY 4.0, as of Oct 22, 2026. Where a model is rated at several effort levels, its best is shown (GPT-3.5 Turbo (0125), GPT-3.5 Turbo (1106)).
Compare GPT-3.5 Turbo
OpenAI
The lab behind GPT and ChatGPT, which brought large language models to hundreds of millions of people. Founded 2015, based in San Francisco. openai.com
Questions
Who makes GPT-3.5 Turbo?
GPT-3.5 Turbo is made by OpenAI, founded 2015 and based in San Francisco.
How much does GPT-3.5 Turbo cost?
$1 per million input tokens and $2 per million output tokens, at its provider’s list price.
What is GPT-3.5 Turbo’s context window?
4K tokens (4,095).
How does GPT-3.5 Turbo rank?
#356 of 351 on LMArena’s text leaderboard, rated 1125 (95% interval 1120–1130) from 66,207 votes, as of Oct 22, 2026.
Is GPT-3.5 Turbo open source?
No. GPT-3.5 Turbo is proprietary and served through its provider’s API.