LT Apertus 8B Instruct


LT Apertus 8B Instruct is Bsc Lt's language model with a 8K context window and up to 4K output tokens. A compact 8B-parameter instruction-tuned LLM from BSC's LT series, optimized for Spanish and multilingual text generation with lower compute requirements.
Specifications
Canonical IDbsc-lt-apertus-8b-instruct
TypeLanguage
StatusActive
CreatorBsc Lt
Context Window8K tokens
Max Output4K tokens
Input ModalitiesText
Output ModalitiesText
Parameters8B
Benchmarks
Intelligence Index
5.9
#462
Coding Index
1.4
#370
GPQA
0.3
#430
HLE
0.1
#273
IFBench
0.2
#366
Time to First Token
SciCode
0.0
#417
LCR
0.0
#350
TerminalBench Hard
0.0
#344
TAU2
0.1
#339
Output TPS
0.0
#307

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
LT Bielik 3 11B InstructAvailable
LT Apertus 8B Instruct8KCurrent
LT Apertus 70B Instruct8KAvailable
LT 8BAvailable
LT Alia 40B Instruct8KAvailable
LT Apertus 70BAvailable
LT Salamandra 7B Instruct Tools 16K16KAvailable

Model IDs