AI21

Jamba 1.5 Large

Vérifié par l’équipe de recherche de GetInfoUsDernière révision : October 2026Politique éditoriale
Modèle de Base à Poids OuvertsOfficial Source Verified ↗
42
Intelligence Index

Jamba 1.5 Large de AI21 est un modèle d’IA conçu pour l’auto-hébergement sur infrastructure privée, le fine-tuning et la souveraineté des données, offrant une fenêtre de contexte de 256K, une vitesse de 82 tokens/s, un indice d’intelligence de 42/100 et un tarif de $2/$8 par million de tokens.

Technical Specifications

Provider
AI21
Category
flagship
Release Date
2024-08
Knowledge Cutoff
March 2024
Architecture
Hybrid SSM-Transformer (Mamba + Transformer MoE)
Parameters
398B (94B active)
Context Window
256K tokens
Max Output
4K tokens
Cached Input Price
$0.5 / 1M tokens
Batch API Discount
50% off async batch
Consumer Subscription
Free / Self-Hosted
Reasoning Mode
No (Standard)
Reasoning Effort Control
Fixed
Tool Calling
Yes
Structured Outputs
Yes
Open Weights
Yes (Open Source / Self-Hostable)
Input Modalities
text
Output Modalities
text
Official Documentation
Visit Official Docs ↗

Data Privacy, Licensing & Deployment Governance

API Data Training Policy
100% Isolated when self-hosted on private GPUs or VPC
Model License & Commercial Rights
Open-Weights Research & Commercial License
Deployment & Cloud Availability
Self-Hosted GPU (vLLM / Ollama), Private VPC, or Managed Serverless API
Output Ownership
Full commercial ownership of generated outputs

Official Provider Release Intelligence, API Quotas & Agentic Specs

Compare Multi-Models Side-by-Side →
Official API Model ID (SDK String)
jamba-1-5-large
Supported SDK & API Protocol
OpenAI-Compatible REST / vLLM / SGLang / HuggingFace TGI
Lifecycle & Deprecation Status
Legacy Stable (Upgrade path available in AI21 lineup)
Production Rate Limits (RPM & TPM)
Unlimited (Hardware-bound on self-hosted GPU) / 10,000 RPM Cloud · Unlimited local throughput / 10M+ TPM Managed Cloud
Long-Context Pricing Tier (>128K / >200K)
Flat rate ($2/1M in) across full 256K window
Prompt Cache Write & TTL Policy
Cached input at $0.5/1M tokens
Computer Use & Browser GUI Agent
API / CLI Tool-Use & DOM Agent ready (no raw pixel desktop click loop)
MCP & Parallel Tool Calling
Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema
Web Search Grounding & Code Sandbox
Supported via external Tavily/Exa Search & E2B/Docker Sandbox tools
Fine-Tuning & Distillation Support
Full Weights SFT, LoRA, QLoRA, DPO & GRPO RL (Unsloth / Axolotl / Llama-Factory)
Multimodal Tokenization Billing
Text BPE (~4 chars/token)
Weights Precision & Quantization
BF16 / FP16, FP8 Dynamic, INT4 AWQ / GPTQ, GGUF (Q4_K_M / Q8_0)
Minimum GPU VRAM Requirement
247 GB VRAM (4-bit Quantized) · 856 GB VRAM (Native BF16)
Supported Inference Engines
vLLM, SGLang, Ollama, llama.cpp, TensorRT-LLM, HuggingFace TGI
System Card & Safety Framework
Open-Weights System Card + Customizable Guardrail Layer (Llama Guard / ShieldGemma)
Enterprise Compliance (SOC2 / HIPAA / ZDR)
100% Air-Gapped On-Premises / Private VPC · Full HIPAA, GDPR & SOC2 Control
Engineering & Pricing Workbench

Jamba 1.5 Large Cost, Context, Hardware & API Integration

500 / day
4,000 tok
1,000 tok
Conversation Depth (History Re-billing):1 Turn (Single-Shot)
50%
Estimated Monthly API Cost (30 Days)
$195.00$240.00
Monthly Savings: $45.00 (Caching/Batch)
Subscription ($20/mo) vs API

For single-user chat, a $20/mo subscription caps your bill below this API volume.

Break-even point: ~51 requests/day equals $20/month.

Same Monthly Workload Cost Across Popular Reference Models

Jamba 1.5 Large (Active)
$195.00
/ month
Gemini 2.5 Flash
$18.00
/ month
DeepSeek V3
$32.70
/ month
GPT-4o
$300.00
/ month
Claude 3.7 Sonnet
$405.00
/ month

Live Prompt Paste Tokenizer & Cost Counter

Paste real system instructions, JSON schemas, or code to measure BPE token counts across tokenizers.

Chars / Words
175 / 24
OpenAI o200k
~46 tok
Claude BPE
~49 tok
Llama / DeepSeek
~51 tok

Hybrid Prompt Routing Cascade Simulator

Route routine queries to a fast lightweight model ($0.15/1M) and escalate only complex reasoning turns to Jamba 1.5 Large:

Cascaded Monthly Bill:$62.25/mo
Saves $132.75/mo (68% cost reduction) vs sending 100% of traffic to Jamba 1.5 Large.

Benchmark Scores & 6-Axis Capability Radar

Benchmark Encyclopedia
Coding (47)Reasoning (59)Knowledge (70)Speed (55)Context (85)Cost Value (72)
Jamba 1.5 Large2026 Frontier Median
SWE-bench Verified
41.2%
GPQA Diamond
51%
MMLU-Pro
70.2%
HumanEval
86.5%
Humanity's Last Exam
6.9%
Terminal-Bench
26.5%
SciCode
27.2%
LiveCodeBench
45%
AIME
54%
Long-Context Reasoning
75%
Chatbot Arena Elo
1275pts

Strengths

  • Fenêtre de contexte de 256K et capacité de sortie maximale de 4K tokens (SWE-bench Verified 41.2% · GPQA Diamond 51%)
  • Débit rapide de 82 tokens/seconde avec une latence au premier token (TTFT) de 490 ms
  • Poids ouverts (398B (94B )) permettant un déploiement sur site ou cloud privé via vLLM, SGLang ou Ollama

Limitations & Trade-offs

  • Nécessite des serveurs GPU dotés de suffisamment de mémoire VRAM pour l’inférence locale à pleine précision
  • Pour les charges à très fort volume, l’activation du cache de prompts et de l’API Batch est recommandée

Editorial Assessment

Alliant un indice d’intelligence de 42/100, un contexte de 256K et un débit de 82 tok/s, Jamba 1.5 Large s’impose comme une valeur sûre de la gamme AI21.

Best for: Conçu pour l’auto-hébergement sur infrastructure privée, le fine-tuning et la souveraineté des données, l’intégration RAG et les pipelines de production évolutifs.

Frequently Asked Questions about Jamba 1.5 Large

How much does the Jamba 1.5 Large API cost per 1M tokens?+

Jamba 1.5 Large by AI21 is priced at $2 per 1M input tokens and $8 per 1M output tokens. With prompt caching enabled, cached input tokens cost $0.5 per 1M tokens, and asynchronous Batch API requests receive a 50% discount.

Should I use a $20/month subscription or the Jamba 1.5 Large pay-as-you-go API?+

A flat $20/month consumer subscription is predictable for daily interactive chat and manual coding. However, if you are building software, running automated workflows, or sending low-to-moderate volume with prompt caching enabled, the pay-as-you-go API is typically far more cost-effective and offers higher rate limits without manual UI caps.

How many words and pages fit in Jamba 1.5 Large's context window?+

Jamba 1.5 Large features a 256K tokens context window, which equals approximately 192,000 English words or ~512 standard single-spaced pages in a single prompt. Its maximum output generation per turn is 4,096 tokens.

Can I run Jamba 1.5 Large locally on my own GPU (Open Weights)?+

Yes, Jamba 1.5 Large (398B (94B active)) releases open weights that can be self-hosted locally or on private cloud GPUs using vLLM, Ollama, SGLang, or llama.cpp.

Does AI21 train on data sent to the Jamba 1.5 Large API, and is commercial use allowed?+

100% Isolated when self-hosted on private GPUs or VPC. License tier: Open-Weights Research & Commercial License. Full commercial ownership of generated outputs. Supported deployment channels include: Self-Hosted GPU (vLLM / Ollama), Private VPC, or Managed Serverless API.

How does Jamba 1.5 Large perform on coding and reasoning benchmarks?+

Jamba 1.5 Large achieves a composite Intelligence Index of 42/100, scoring 41.2% on SWE-bench Verified, 51% on GPQA Diamond, 70.2% on MMLU-Pro, and 1275 pts on Chatbot Arena Elo.

What is Jamba 1.5 Large best used for?+

Jamba 1.5 Large is best suited for: Conçu pour l’auto-hébergement sur infrastructure privée, le fine-tuning et la souveraineté des données, l’intégration RAG et les pipelines de production évolutifs.. Assessment: Alliant un indice d’intelligence de 42/100, un contexte de 256K et un débit de 82 tok/s, Jamba 1.5 Large s’impose comme une valeur sûre de la gamme AI21.

AI21 Family Lineage, Routing Tiers & Upgrade Path

Step down to a lighter sibling for high-volume routing or step up to AI21's flagship reasoning tier:

Les scores de benchmarks, tarifs par token et limites évoluent rapidement. Vérifiez toujours les spécifications actuelles sur la documentation officielle du fournisseur.

Sources: AI21 Labs Jamba 1.5 Technical Whitepaper↗