AI21 推出的 Jamba 1.5 Mini 人工智能模型，具备 256K 上下文窗口，输入价格为 $0.2/百万 Token，输出价格为 $0.4/百万 Token，专为高质量生产环境、推理与自动化工作流打造。
Technical Specifications
- Provider
- AI21
- Category
- open-source
- Release Date
- 2024-08
- Batch API Discount
- 50% off async batch
- Consumer Subscription
- Free / Self-Hosted
- Reasoning Effort Control
- Fixed
- Structured Outputs
- Yes
- Output Modalities
- text
- Official Documentation
- Visit Official Docs ↗
Data Privacy, Licensing & Deployment Governance
Official Provider Release Intelligence, API Quotas & Agentic Specs
- Official API Model ID (SDK String)
- jamba-1-5-mini
- 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 ($0.2/1M in) across full 256K window
- Prompt Cache Write & TTL Policy
- Cached input at $0.05/1M 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
- 32 GB VRAM (4-bit Quantized) · 112 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
Jamba 1.5 Mini Cost, Context, Hardware & API Integration
Pay-as-you-go API is cheaper for this volume (saves $6.50/mo vs $20 flat plan).
Break-even point: ~741 requests/day equals $20/month.
Same Monthly Workload Cost Across Popular Reference Models
Live Prompt Paste Tokenizer & Cost Counter
Paste real system instructions, JSON schemas, or code to measure BPE token counts across tokenizers.
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 Mini:
Benchmark Scores & 6-Axis Capability Radar
- SWE-bench Verified
- 35.8%
- GPQA Diamond
- 44.2%
- MMLU-Pro
- 64%
- HumanEval
- 82%
- Humanity's Last Exam
- 4.8%
- Terminal-Bench
- 21.5%
- SciCode
- 22.8%
- LiveCodeBench
- 37.5%
- AIME
- 45%
- Long-Context Reasoning
- 72%
- Chatbot Arena Elo
- 1242pts
Strengths
- 由 AI21 研发的高精度 Hybrid SSM-Transformer (Mamba + Transformer MoE) 架构，支持 256K 上下文窗口
- 极具竞争力的 API 定价（输入 $0.2/1M，输出 $0.4/1M），支持高速推理与工具调用
- 在代码生成、逻辑推理与多语言处理基准测试中表现出色
Limitations & Trade-offs
- 超长上下文请求需要规划 Token 成本与并发配额
- 针对特定垂直领域任务建议结合系统提示词与检索增强（RAG）以获得最佳效果
Editorial Assessment
Jamba 1.5 Mini 是 AI21 旗下极具代表性的模型，在性能、速度与 API 成本之间实现了卓越平衡。
Best for: 企业级 AI 自动化、代码研发、智能体（Agent）工作流以及 AI21 生态深度集成
Compare Jamba 1.5 Mini
Frequently Asked Questions about Jamba 1.5 Mini
How much does the Jamba 1.5 Mini API cost per 1M tokens?+
Jamba 1.5 Mini by AI21 is priced at $0.2 per 1M input tokens and $0.4 per 1M output tokens. With prompt caching enabled, cached input tokens cost $0.05 per 1M tokens, and asynchronous Batch API requests receive a 50% discount.
Should I use a $20/month subscription or the Jamba 1.5 Mini 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 Mini's context window?+
Jamba 1.5 Mini 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 Mini locally on my own GPU (Open Weights)?+
Yes, Jamba 1.5 Mini (52B (12B 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 Mini 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 Mini perform on coding and reasoning benchmarks?+
Jamba 1.5 Mini achieves a composite Intelligence Index of 39/100, scoring 35.8% on SWE-bench Verified, 44.2% on GPQA Diamond, 64% on MMLU-Pro, and 1242 pts on Chatbot Arena Elo.
What is Jamba 1.5 Mini best used for?+
Jamba 1.5 Mini is best suited for: 企业级 AI 自动化、代码研发、智能体（Agent）工作流以及 AI21 生态深度集成. Assessment: Jamba 1.5 Mini 是 AI21 旗下极具代表性的模型，在性能、速度与 API 成本之间实现了卓越平衡。
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:
AI Glossary & Architecture Concepts
View full glossary →Key machine learning concepts and benchmarks relevant to Jamba 1.5 Mini:
The basic unit of text that a language model processes, typically representing about 3 to 4 English characters or roughly 0.75 words. For example, the sentence "Artificial intelligence is fast" breaks down into about 5 tokens.
A standardized evaluation suite used to objectively measure and rank an AI model's capabilities across specific tasks — such as SWE-bench Verified for software engineering, AIME for competitive math, or MMLU for general knowledge.
The maximum number of tokens a model can consider at once — both the input it reads and the output it writes. A 1,000,000-token context window can hold roughly 750,000 English words in a single request.
The ability of a language model to recognize when an external capability is needed and output structured JSON arguments to invoke external APIs, databases, or terminal commands. The runtime executes the tool and passes results back to the model.
An open standard created by Anthropic that allows AI applications and agents to connect seamlessly to local filesystems, development environments, and third-party APIs via standardized server interfaces.
A cost and latency optimization where inference providers store pre-computed attention states for repeated prompt prefixes. Reusing cached tokens typically slashes API input costs by 50% to 90% and cuts TTFT substantially.
Benchmark scores, token prices, and rate limits evolve rapidly as AI labs release model updates. Always verify current specifications and pricing on the official provider documentation.