Claude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/MClaude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/M
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Llama-3.1-8B (Cerebras)

Ultra-Fast Nano

Small, fast Llama 3.1. The default cheap open-weights model in 2024–25 across Groq, Cerebras and Together.

Llama-3.1-8B (Cerebras) is a efficient AI model from Cerebras. It costs $0.100 per million input tokens and $0.100 per million output tokens (blended $0.100/M), with a 128K-token context window.

Profile inherited from upstream Llama 3.1 8B ↗ — this is a hosted variant of the same open-weights model.

Released Jul 2024Modalities textOfficial model page ↗Provider pricing ↗API docs ↗Compare with another model →Estimate monthly cost →
INPUT
$0.100/M
per million input tokens
OUTPUT
$0.100/M
per million output tokens
BLENDED 70/30
$0.100/M
default reference rate · how it's calculated →
CONTEXT
128K
128,000 tokens
What it's good at
  • Cheap
  • Fast on LPU/Cerebras
  • Open weights
  • 128K context
Typical use cases
  • Bulk classification
  • Cheap chat
  • Edge inference
Benchmarks
vs. best public score
Scores inherited from Llama 3.1 8B — this is a hosted variant of the same open-weights model, so the underlying benchmark scores are identical.
MMLU73%
Multitask academic knowledge across 57 subjects.
GPQA Diamond31%
Graduate-level science questions, "Google-proof".
MATH51%
High-school competition math problems.
HumanEval73%
Python function synthesis from docstrings.
LMArena Elo1180 Elo
Crowd-sourced head-to-head preference Elo rating.
Hand-curated from each provider's published reports and public leaderboards. Methodology varies across sources — treat as directional rather than authoritative.
More from Cerebras
See all 4 →
Llama-3.3-70B (Cerebras)
Ultra-Fast · 128K ctx
in $0.590/Mout $0.990/M
Llama-3.1-405B (Cerebras)
Fast Large · 128K ctx
in $0.990/Mout $0.990/M
DeepSeek-R1 (Cerebras)
Fast Reasoning · 64K ctx
in $0.550/Mout $0.990/M
Frequently asked questions

How much does Llama-3.1-8B (Cerebras) cost?

Llama-3.1-8B (Cerebras) costs $0.100 per million input tokens and $0.100 per million output tokens, for a blended reference rate of $0.100 per million tokens.

What is Llama-3.1-8B (Cerebras)'s context window?

Llama-3.1-8B (Cerebras) supports up to 128K tokens of context (128,000 tokens).

What is Llama-3.1-8B (Cerebras) best for?

Llama-3.1-8B (Cerebras) is well suited to Cheap, Fast on LPU/Cerebras and Open weights.

Who makes Llama-3.1-8B (Cerebras)?

Llama-3.1-8B (Cerebras) is developed and served by Cerebras. It was released in Jul 2024.