Martian

Best for: Prototypes and side projects - free to start, no sales call; Teams needing broad API coverage out of the box

Avoid if: You need transparent pricing up front; You have strict compliance requirements

Pricing model

Usage-based [2]everydev.ai/tools/martian“Freemium — Free tier available with paid upgrades. A free developer tier includes 2,500 requests; paid usage is metered”withmartian.com/pricing“Martian offers pre-built developer and customized enterprise plans”

Published pricing

✗ No [3]withmartian.com/pricing“HTTP 404 Not Found — pricing page not accessible at time of research”route.withmartian.com/pricing“ECONNREFUSED — route.withmartian.com subdomain not reachable at time of research”

Free tier

✓ Yes [4]everydev.ai/tools/martian“A free developer tier includes 2,500 requests; paid usage is metered, and enterprises can deploy custom routers with SLA and VPC options”respan.ai/market-map/compare/martian-vs-openrouter“Free Tier: Yes, Martian offers a free tier to get started. Starting Price: $0 per month”

Free tier details

Free developer tier includes 2,500 requests; paid usage is metered beyond that. Official pricing page currently returns 404 - details sourced from third-party aggregators.

Self-serve signup

✓ Yes [5]docs.withmartian.com/quickstart“Get your API key from the Martian Dashboard at https://app.withmartian.com/”

Requires sales call

✗ No

Enterprise plan

✓ Yes [6]everydev.ai/tools/martian“Enterprise options: SLA, VPC deployment, and custom-built routers”withmartian.com/pricing“Martian offers pre-built developer and customized enterprise plans”

• Fallback / routing
• Observability

Supported actions

unified_chat_completions, openai_compatible_api, anthropic_compatible_api, model_routing, automatic_fallback, observability_logging, usage_tracking, request_history, model_performance_analytics, streaming_sse, tool_use, json_mode, metadata_logging, compliance_policy_enforcement, spend_tracking, rate_limiting_via_litellm [7]docs.withmartian.com/api-reference/endpoints“POST https://api.withmartian.com/v1/chat/completions ... POST https://api.withmartian.com/v1/messages ... GET /v1/models”docs.withmartian.com/integrations/litellm“Centralized spend tracking and rate limiting along with virtual keys for multi-project access control”

Input types

chat completions, messages (Anthropic format)

Output types

streaming (SSE), JSON, OpenAI-compatible response, Anthropic-compatible response

Webhooks

✗ No [8]docs.withmartian.com/api-reference/endpoints“No webhooks, event callbacks, or alert systems mentioned in the API reference”

Sandbox / test mode

✗ No

SDK languages

JavaScript/TypeScript, Python [9]docs.withmartian.com/integrations/anthropic-sdk“Use the official Anthropic SDK with the Martian Gateway to access 200+ models from multiple providers through a single, unified interface”github.com/withmartian/martian-ai-sdk-provider“martian-ai-sdk-provider — JavaScript SDK provider (MIT licensed)”

MCP server

✗ No [10]docs.withmartian.com/integrations“Integrations documented include: OpenAI SDK, Anthropic SDK, Vercel AI SDK, HTTP Client, Aider, Claude Code, Cline, Codex, Cursor, LiteLLM, and OpenCode — no MCP server listed”

SOC 2

– Unknown [11]withmartian.com/privacy-policy“No references to ISO 27001, SOC 2, or other security certifications found in privacy policy or any accessible page”

HIPAA

– Unknown

GDPR

✓ Yes [12]withmartian.com/privacy-policy“If we transfer personal information which originates in the European Economic Area, Switzerland, and/or the United Kingdom... they use EU Standard Contractual Clauses as safeguards”

ISO 27001

– Unknown

PCI DSS

– Unknown

Published SLA

✗ No [13]withmartian.com/terms-of-service“MARTIAN HEREBY DISCLAIMS ANY WARRANTY THAT USE OF THE SERVICES WILL BE ERROR-FREE, BUG-FREE OR UNINTERRUPTED”

Known restrictions

Official pricing page (withmartian.com/pricing) returns 404 - pricing details not currently publicly accessible on the vendor site, No self-hosted/open-source option for the gateway itself (only ARES and K-Steering research tools are open-source), No BYOK (bring your own provider key) feature documented - users authenticate via Martian API key only, Caching, advanced spend controls, and load balancing beyond basic fallback require third-party LiteLLM integration, Terms of service explicitly disclaims all SLA/uptime guarantees: 'Martian hereby disclaims any warranty that use of the Services will be error-free, bug-free or uninterrupted', No security trust page found; no SOC2, HIPAA, or ISO 27001 certifications publicly claimed [14]withmartian.com/terms-of-service“MARTIAN HEREBY DISCLAIMS ANY WARRANTY THAT USE OF THE SERVICES WILL BE ERROR-FREE, BUG-FREE OR UNINTERRUPTED”docs.withmartian.com/integrations/litellm“Add an additional layer of routing, load balancing, and spend tracking on top of Martian Gateway's 200+ models”

• Docs
• Status page

Docs rendering: static

API style

rest

Base URL

https://api.withmartian.com/v1

Version

v1

Versioning

url

Stability

ga

Auth methods

api_key

Error format

openai-compatible

SDKs

• JavaScript/TypeScript @withmartian/ai-sdk-provider · repo
• Python openai · repo
• Python anthropic · repo
• JavaScript/TypeScript openai · repo
• JavaScript/TypeScript @anthropic-ai/sdk · repo

• Auth docs
• Quickstart

Launched

2023-11-15

GA

2023-11-15

Notable customers

Accenture

• Vercel AI Gateway

  "AI Gateway provides a unified API to access hundreds of AI models through a single endpoint, with built-in budgets, usage monitoring, and fallbacks."

  Usage · free tier · public pricing · self-serve

• Portkey

  "Production Stack for Gen AI Builders"

  Hybrid · free tier · public pricing · self-serve

• Bifrost (Maxim AI)

  "The fastest, most resilient, enterprise-grade LLM, MCP, and agent gateway."

  Sales-led · free tier · public pricing · self-serve

• Cloudflare AI Gateway

  "Connect to any model, dynamically route requests, and manage usage, billing, and logs from one unified gateway."

  Hybrid · free tier · public pricing · self-serve

• TrueFoundry AI Gateway

  "A unified AI gateway to securely manage and govern AI across 1600+ models with policy control, real-time monitoring, and up to 30% cost reduction."

  Hybrid · free tier · public pricing · self-serve

• Helicone

  "Open-source LLM observability and monitoring platform for developers" - routes, debugs, and analyzes AI applications with access to 100+ models through one API with built-in observability, automatic fallbacks, and zero markup pricing.

  Hybrid · free tier · public pricing · self-serve

Martian alternatives · Martian vs Vercel AI Gateway · All AI Gateway & LLM Routing APIs APIs

Each field above carries a numbered source - hover for a preview, click to jump here.

1. ↑Description: docs.withmartian.com · gateway-docs.withmartian.com
2. ↑Pricing model: everydev.ai · withmartian.com
3. ↑Published pricing: withmartian.com · route.withmartian.com
4. ↑Free tier: everydev.ai · respan.ai
5. ↑Self-serve signup: docs.withmartian.com
6. ↑Enterprise plan: everydev.ai · withmartian.com
7. ↑Supported actions: docs.withmartian.com · docs.withmartian.com
8. ↑Webhooks: docs.withmartian.com
9. ↑SDK languages: docs.withmartian.com · github.com
10. ↑MCP server: docs.withmartian.com
11. ↑SOC 2: withmartian.com
12. ↑GDPR: withmartian.com
13. ↑Published SLA: withmartian.com
14. ↑Known restrictions: withmartian.com · docs.withmartian.com

Every field change, who made it, and when - from our audited data pipeline and editors.

1. 2026-06-21 Capabilities: {} → {"observability":true,"fallback_routing":true}
2. 2026-06-21 Summary Md: (none) → Martian is a unified LLM gateway that routes requests across 200+ AI models thr…
3. 2026-06-21 Score Pricing Transparency: (none) → 30
4. 2026-06-21 Score Docs Quality: (none) → 15
5. 2026-06-21 Score Procurement Friction: (none) → 70
6. 2026-06-21 Score Trust Readiness: (none) → 15
7. 2026-06-21 Best For: (none) → Prototypes and side projects - free to start, no sales call, Teams needing broa…
8. 2026-06-21 Avoid If: (none) → You need transparent pricing up front, You have strict compliance requirements
9. 2026-06-21 Scoring Methodology: (none) → Scores are computed deterministically from this profile's published, sourced fi…
10. 2026-06-21 Score Agent Friendliness: (none) → 30
11. 2026-06-21 Score Setup Speed: (none) → 80
12. 2026-06-21 Robots Allows Agents: (none) → Yes
13. 2026-06-21 Status Page URL: (none) → https://status.withmartian.com
14. 2026-06-21 Docs URL: (none) → https://docs.withmartian.com/
15. 2026-06-21 Has Structured Data: (none) → Yes
16. 2026-06-21 Rendering: (none) → static
17. 2026-06-21 Llms Txt Present: (none) → No
18. 2026-06-21 Has Published Pricing: set to No
19. 2026-06-21 Free Tier Available: set to Yes
20. 2026-06-21 Free Tier Details: set to Free developer tier includes 2,500 requests; paid usage is metered beyond that.…
21. 2026-06-21 Self Serve Signup: set to Yes
22. 2026-06-21 Requires Sales Call: set to No
23. 2026-06-21 Enterprise Plan Available: set to Yes
24. 2026-06-21 GDPR: set to Yes
25. 2026-06-21 SLA Published: set to No
26. 2026-06-21 Data Retention Policy URL: set to https://withmartian.com/privacy-policy
27. 2026-06-21 Known Restrictions: set to Official pricing page (withmartian.com/pricing) returns 404 - pricing details n…
28. 2026-06-21 Auth Methods: set to api_key
29. 2026-06-21 Auth Docs URL: set to https://docs.withmartian.com/api-reference/authentication
30. 2026-06-21 API Style: set to rest
31. 2026-06-21 Base URL: set to https://api.withmartian.com/v1
32. 2026-06-21 API Version: set to v1
33. 2026-06-21 Versioning Scheme: set to url
34. 2026-06-21 Stability: set to ga
35. 2026-06-21 Quickstart URL: set to https://docs.withmartian.com/quickstart
36. 2026-06-21 Error Format: set to openai-compatible
37. 2026-06-21 Requires Verification: set to No
38. 2026-06-21 Launched At: set to 2023-11-15
39. 2026-06-21 Slug: set to martian
40. 2026-06-21 Notable Customers: set to Accenture
41. 2026-06-21 Fields Not Found: set to documented_rate_limits, minimum_commitment, supported_regions, soc2, hipaa, iso…
42. 2026-06-21 Source Confidence: set to high
43. 2026-06-21 Extractor: set to claude-subagent:sonnet
44. 2026-06-21 Last Verified At: set to 2026-06-21T00:00:00.000Z
45. 2026-06-21 Status: set to published
46. 2026-06-21 GA Date: set to 2023-11-15
47. 2026-06-21 Name: set to Martian
48. 2026-06-21 Vendor ID: set to 025cff0e-4b2a-4316-9a94-71005d8bf69f
49. 2026-06-21 Website URL: set to https://withmartian.com
50. 2026-06-21 Vendor Description: set to "Unified access to 200+ AI models through a single API" with "compatibility wit…

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  -d '{"kind":"review","rating":5,"body":"Your experience with this API…"}'

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  -d '{"value":"corrected value","citations":[{"url":"https://source.example/page","excerpt":"supporting quote"}],"note":"what changed and why"}'

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