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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AI21 LabsFrontier

Jamba Instruct

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Instruction-tuned Jamba — closed-weights AI21 hosted variant focused on enterprise summarisation and long documents.

Jamba Instruct is a frontier AI model from AI21 Labs. It costs $0.500 per million input tokens and $0.700 per million output tokens (blended $0.560/M), with a 256K-token context window.

Modalities textOfficial model page ↗Provider pricing ↗API docs ↗Compare with another model →Estimate monthly cost →
INPUT
$0.500/M
per million input tokens
OUTPUT
$0.700/M
per million output tokens
BLENDED 70/30
$0.560/M
default reference rate · how it's calculated →
CONTEXT
256K
256,000 tokens
What it's good at
  • 256K context
  • Enterprise hosting
  • Tuned for summarisation
Typical use cases
  • Long-document summarisation
  • Enterprise RAG via AI21 API
Benchmarks
No published benchmark scores tracked for this model yet. Frontier and reasoning models from major providers have scores; smaller models and inference-host variants typically inherit the underlying open-weights score.
More from AI21 Labs
See all 5 →
Jamba 1.5 Large
Frontier · 256K ctx
in $2.000/Mout $8.000/M
Jamba 1.5 Mini
Efficient · 256K ctx
in $0.200/Mout $0.400/M
Frequently asked questions

How much does Jamba Instruct cost?

Jamba Instruct costs $0.500 per million input tokens and $0.700 per million output tokens, for a blended reference rate of $0.560 per million tokens.

What is Jamba Instruct's context window?

Jamba Instruct supports up to 256K tokens of context (256,000 tokens).

What is Jamba Instruct best for?

Jamba Instruct is well suited to 256K context, Enterprise hosting and Tuned for summarisation.

Who makes Jamba Instruct?

Jamba Instruct is developed and served by AI21 Labs.