OpenAI: gpt-oss-20b (free)
Released Aug 5, 2025Ranked in:Text
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gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...
Best overall rank
#220
▼ 1 vs 7d ago
Total arena votes
56,792
Across 26 (subset, category) entries
Providers on OR
2
OpenInference + others
First seen
2026-05-08
45 days tracked
Trend
Pricing
No priced fields.
Capabilities
Modality
text->textContext
131K tokens
Tokenizer
GPT
Knowledge cutoff
2024-06-30
Max output
33K tokens
Moderation
Unmoderated
Hugging Face
Supported parameters
frequency_penalty
include_reasoning
max_tokens
min_p
presence_penalty
reasoning
repetition_penalty
response_format
seed
stop
structured_outputs
temperature
tool_choice
tools
top_a
top_k
top_p
Providers
| Provider | Region / Tag | Context | Input/M | Output/M | Uptime 1d | Latency | Quant | Cache |
|---|---|---|---|---|---|---|---|---|
| OpenInference | open-inference/int8 | 131K | - | - | 99.76% | - | int8 | - |
| Darkbloom | darkbloom | 131K | - | - | 79.42% | - | - | - |
Per-category ranks
Text
| Rank | Category | Variant | Trend | Elo | Votes |
|---|---|---|---|---|---|
| #146 | Korean | - | 1292 | 218 | |
| #147 | Japanese | - | 1262 | 233 | |
| #180 | Math | - | 1336 | 680 | |
| #183 | Industry Mathematical | - | 1331 | 582 | |
| #183 | Industry Medicine And Healthcare | - | 1353 | 560 | |
| #187 | Chinese | - | 1349 | 487 | |
| #187 | Spanish | - | 1304 | 253 | |
| #194 | Expert | - | 1318 | 489 | |
| #195 | Industry Business And Management And Financial Operations | - | 1322 | 1,850 | |
| #196 | Coding | - | 1370 | 2,167 | |
| #199 | Industry Software And It Services | - | 1359 | 3,707 | |
| #202 | German | - | 1270 | 208 | |
| #213 | Russian | - | 1302 | 607 | |
| #215 | Hard Prompts English | - | 1339 | 2,448 | |
| #216 | Exclude Ties | - | 1262 | 7,781 | |
| #219 | Hard Prompts | - | 1323 | 4,798 | |
| #220 | Overall | - | 1318 | 10,627 | |
| #221 | English | - | 1331 | 5,065 | |
| #221 | Industry Life And Physical And Social Science | - | 1329 | 1,684 | |
| #232 | Industry Legal And Government | - | 1323 | 694 | |
| #233 | Multi Turn | - | 1292 | 1,839 | |
| #235 | Longer Query | - | 1301 | 2,092 | |
| #237 | Instruction Following | - | 1281 | 2,554 | |
| #243 | Industry Entertainment And Sports And Media | - | 1256 | 1,746 | |
| #244 | Industry Writing And Literature And Language | - | 1274 | 2,182 | |
| #257 | Creative Writing | - | 1238 | 1,241 |