Callstack Apex API offers 1 tracked model (1 with output token pricing). This catalog covers coding, rag, and agents; open any model detail page for benchmarks, batch tiers, and migration prompts.
Covers 5 workload areas across 1 tracked model; last verified 2026-10-09.
Use it for
- Teams comparing token and batch pricing across this provider's models
- Operators routing coding, rag, and agents workloads through this API
Do not use it for
- Final benchmark picks without opening the relevant model detail page
Tracked models
1
Models available through this provider
Priced output routes
1
Models with output token pricing tracked
Cheapest output
$3.00
Apex on this route
Batch-ready models
0
No batch pricing tracked
Latest model release
2026-10-01
8d since newest release
Freshness
2026-10-09
Researched today
Information
Callstack's hosted API for its Apex coding models. OpenAI- and Anthropic-compatible endpoint (base URL https://api.callstack.ai) with an alias that tracks the latest snapshot and pinned snapshots kept for at least six months after a retirement notice. Hosted in the European Economic Area with zero data retention on by default; customer traffic is never used for training. Pay-as-you-go token pricing for business accounts; dedicated and on-premise deployments are quoted separately.
Read more ->Where this host wins
- Coding: 1 tracked model with SWE-bench / HumanEval-style scores.
- RAG: 1 tracked model with ruler / needle retrieval benchmarks.
- Agentic: 1 tracked model with BFCL, tau-bench, and SWE-bench tool-use coverage.
- Long-context: 1 tracked model with context-token or InfiniteBench-class signal.
Getting started
Platform Overview
Callstack's hosted API for its Apex coding models. OpenAI- and Anthropic-compatible endpoint (base URL https://api.callstack.ai) with an alias that tracks the latest snapshot and pinned snapshots kept for at least six months after a retirement notice. Hosted in the European Economic Area with zero data retention on by default; customer traffic is never used for training. Pay-as-you-go token pricing for business accounts; dedicated and on-premise deployments are quoted separately.
Available Models(1)
View all →All models available as Serverless
| Model | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Apex | $0.50 | $3.00 |