AI21 Labs API Pricing
Hybrid SSM-Transformer models with long context and efficient inference — Jamba 1.5 Large
Why AI21 Labs?
AI21 Labs specializes in hybrid SSM-Transformer models that combine the efficiency of state space models with the power of Transformers.
Hybrid Architecture
Jamba combines SSM (State Space Model) with Transformer layers, achieving better throughput and lower latency than pure Transformer models at scale.
Long Context
256K context window handles lengthy documents, codebases, and multi-turn conversations without chunking or truncation.
Enterprise Focus
AI21 specializes in production-grade AI for enterprises. Their models are optimized for reliability, consistency, and cost efficiency at scale.
Competitive Pricing
Jamba 1.5 Large at $2.00/$8.00 per 1M tokens is priced below GPT-4o ($2.50/$10.00) with a larger context window (256K vs 128K).
All AI21 Models
Pricing per 1M tokens, as of May 2026.
| Model | Tier | Input (per 1M tokens) | Output (per 1M tokens) | Context Window |
|---|---|---|---|---|
| Jamba 1.5 Large | Mid | $2.00 | $8.00 | 256K |
Which AI21 Model Should You Use?
Match your use case to the right model and tier.
Enterprise Document Processing
Hybrid SSM-Transformer with 256K context. Best for enterprise document processing, long-context analysis, and high-throughput workloads. $2.00/$8.00 per 1M tokens.
AI21 Cost Calculator
Estimate your monthly spend for any AI21 model.
Monthly Cost Estimate
Based on published AI21 API pricing. Actual costs may vary.
AI21 vs Competitors
How do AI21's prices compare to OpenAI, Anthropic, Google, and DeepSeek for equivalent model tiers?
| Provider | Model | Input / Output | Context |
|---|---|---|---|
| AI21 Labs | Jamba 1.5 Large | $2.00 / $8.00 | 256K |
| OpenAI | GPT-4o | $2.50 / $10.00 | 128K |
| Anthropic | Claude Sonnet 4 | $3.00 / $15.00 | 200K |
| Gemini 2.5 Pro | $1.25 / $10.00 | 1M | |
| DeepSeek | V4 Pro | $2.18 / $8.72 | 128K |
Prices per 1M tokens. AI21 Jamba 1.5 Large offers a 256K context window at a lower price than GPT-4o and Claude Sonnet 4.
See how AI21 models stack up against OpenAI, Anthropic, and more
Related Reading
Deep dives on AI21 pricing, hybrid architectures, and provider comparisons.
AI API Rate Limits Compared
Compare rate limits across OpenAI, Anthropic, Google, and AI21. See which providers offer the highest throughput for your workload.
MigrationHow to Switch LLM Providers Without Breaking Your App
A practical guide to migrating between LLM providers. Compare API formats, pricing models, and feature differences.
StartupsBest LLM APIs for Startups
Find the best LLM APIs for startups based on pricing, free tiers, and ease of integration. Compare AI21, OpenAI, Anthropic, and more.
ComparisonOpen Source vs Commercial LLMs
Compare the total cost of ownership for open source and commercial LLMs. When does self-hosting make sense vs. using AI21's API?
Calculate Your AI21 Costs
Enter your usage, pick a model, and see exactly what you'll spend per month.
Try the APIpulse CalculatorGet notified when API prices change
No spam. Only pricing updates and new features. Unsubscribe anytime.