Software · head to head
AI21 Labs vs Anthropic API
The short version
- Only AI21 Labs has a free tier, so it costs nothing to try first.
- Each has a real cost: AI21 Labs the free allowance is $10 of credit lasting 7 days rather than an ongoing free tier; Anthropic API aWS Marketplace lists Claude Opus 4.8 (Amazon Bedrock Edition), published by seller Anthropic, at $5.00 per million input tokens and $25.00 per million output tokens for standard usage, or $2.50 and $12.50 per million tokens respectively for batch processing
- They diverge on capability: AI21 Labs covers Jamba models, Anthropic API covers Multiple models.
Where they differ
Only the attributes on which AI21 Labs and Anthropic API actually diverge.
| Attribute | AI21 Labs | Anthropic API |
|---|---|---|
| Starting price | Free | $3/per-million-tokens |
| Free tier | Yes | No |
| Platforms | Api, Cloud | Api |
| Founded | 2017 | 2021 |
Identical on both: pricing model (usage-based), user rating (Not yet rated), category (Unknown).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in AI21 Labs
- Jamba models
- Long context
- RAG engine
- Writing tools
- Cloud platforms
- Cloud support
Only in Anthropic API
- Multiple models
- 200K context
- Vision capabilities
- Function calling
- SDKs
- Google Vertex
Both cover
- REST API
- Amazon Bedrock
- Api support
What people use each for
The jobs each tool is most often brought in to do.
AI21 Labs
- Running long-context tasks on the Jamba model familynot Anthropic API
- Building and optimising production AI agents with Maestronot Anthropic API
- Routing between models to control cost and accuracynot Anthropic API
- Long-horizon agentic tasks needing stateful workspacesnot Anthropic API
Anthropic API
- ai tools managementnot AI21 Labs
- Workflow automationnot AI21 Labs
- Reportingnot AI21 Labs
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
AI21 Labs
- The free allowance is $10 of credit lasting 7 days rather than an ongoing free tier
- Jamba Large is $2 per million input tokens and $8 per million output, so output-heavy work costs four times as much as input
- Volume discounts, private cloud hosting and higher rate limits require a custom plan
- Standard rate limits are not published
Anthropic API
- AWS Marketplace lists Claude Opus 4.8 (Amazon Bedrock Edition), published by seller Anthropic, at $5.00 per million input tokens and $25.00 per million output tokens for standard usage, or $2.50 and $12.50 per million tokens respectively for batch processing
- AWS Marketplace's Anthropic listing shows cache write tokens billed separately at $6.25 per million tokens for the standard 5-minute cache, rising to $10.00 per million tokens for a 1-hour cache TTL
Pricing, plan by plan
AI21 Labs
Free- Free TrialFree
- Limited usage
- API access
- Jamba$0.2/per-million-input-tokens
- 256K context
- Hybrid architecture
Anthropic API
$3/per-million-tokens- Claude 3.5 Sonnet$3/per-million-input-tokens
- Fast responses
- 200K context
- Claude 3 Opus$15/per-million-input-tokens
- Most capable
- Complex tasks
Which should you pick?
Choose AI21 Labs if
- You need jamba models.
- You want to start without paying.
- You work on Api, Cloud.
- You also want long context.
Choose Anthropic API if
- You need multiple models.
- You work on Api.
- You also want 200k context.
Questions people ask
- Is AI21 Labs or Anthropic API better?
- Neither clearly leads. AI21 Labs starts at Free and Anthropic API at $3/per-million-tokens, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, AI21 Labs or Anthropic API?
- AI21 Labs has a free tier; the other does not. Paid plans start at Free for AI21 Labs and $3/per-million-tokens for Anthropic API.
- Does AI21 Labs or Anthropic API run on more platforms?
- AI21 Labs runs on Api, Cloud. Anthropic API runs on Api.
- Can I use AI21 Labs for free?
- Yes. AI21 Labs has a free tier, so you can try it without paying. Anthropic API starts at $3/per-million-tokens.
- What is AI21 Labs best used for?
- AI21 Labs is most often used for running long-context tasks on the jamba model family, building and optimising production ai agents with maestro, routing between models to control cost and accuracy, long-horizon agentic tasks needing stateful workspaces. Of those, running long-context tasks on the jamba model family and building and optimising production ai agents with maestro are not what Anthropic API is typically brought in for.
- What can AI21 Labs do that Anthropic API cannot?
- AI21 Labs covers Jamba models, Long context, RAG engine, Writing tools. Anthropic API covers Multiple models, 200K context, Vision capabilities, Function calling. Both handle REST API, Amazon Bedrock, Api support.