AI21 Jamba via VerticalAPI

Updated May 04, 2026·By VerticalAPI Team

AI21 Jamba 1.6 family (open-weights, hybrid Mamba/Transformer, 256K context) via VerticalAPI's OpenAI-compatible endpoint. BYOK, zero markup, Studio or self-hosted.

Start free with your AI21 Jamba key → Read the docs

Endpoint: https://api.verticalapi.com/v1/chat/completions · BYOK header: X-Provider-Key: <ai21-jamba-key>

Supported models

AI21 Jamba models routed by VerticalAPI

Pass the model ID below as model in any OpenAI-compatible request. New AI21 Jamba models are typically supported within 24h of release.

Model ID	Name	Context	Pricing (provider)
`jamba-1.6-large`	Jamba 1.6 Large	256K	$2 / $8 per 1M tok
`jamba-1.6-mini`	Jamba 1.6 Mini	256K	$0.20 / $0.40 per 1M tok

Pricing reflects AI21 Jamba's rates — you pay AI21 Jamba directly. VerticalAPI adds zero markup on tokens.

Quickstart

5-line AI21 Jamba call via VerticalAPI

Drop-in replacement for the OpenAI SDK. Works with the OpenAI Python client, Node, Go, curl — anything that speaks HTTP.

                jamba_quickstart.py
                Python
            
from openai import OpenAI

client = OpenAI(
    base_url="https://api.verticalapi.com/v1",
    api_key="vapi_...",
    default_headers={"X-Provider-Key": "..."}
)

response = client.chat.completions.create(
    model="jamba-1.6-mini",  # AI21 Jamba
    messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)

Why use AI21 Jamba via VerticalAPI

Four reasons developers route AI21 Jamba through us

Zero token markup

You pay AI21 Jamba directly with your own key. VerticalAPI's revenue is the gateway subscription, not a tax on your tokens.

One key, every provider

AI21 Jamba alongside OpenAI, Anthropic, Gemini and 12 more — same OpenAI-compatible endpoint, same SDK, switchable per-request.

Latency & cost monitoring

Per-request token counts, p50/p95 latency and cost dashboards out of the box. Compare AI21 Jamba to other providers on identical prompts.

Observability built in

Every AI21 Jamba call gets a trace ID, replayable payload and audit log entry. Wire to Datadog or Sentry via OpenTelemetry.

Best for

Where AI21 Jamba shines

long-doc QA at low cost structured JSON output self-hosted (open weights) compliance-friendly fine-tunes

FAQ

Common questions about AI21 Jamba on VerticalAPI

How is Jamba different from Jamba 1.5 (the AI21 vertical)?

Jamba 1.6 is the open-weights successor to Jamba 1.5 — same hybrid architecture but with improved benchmarks and the option to self-host. The AI21 vertical covers Studio-hosted Jamba 1.5; this Jamba vertical covers the open-weights release.

Switch providers

All supported LLM providers

Same endpoint, same SDK — just change the model and the BYOK header.

Ship on AI21 Jamba in 60 seconds

Free tier — bring your own AI21 Jamba key, zero markup, OpenAI-compatible endpoint.

Get your VerticalAPI key →