Merge Gateway
Overview
Merge Gateway is the AI gateway product from Merge (merge.dev), a B2B unified API platform. Launched March 31, 2026, Gateway positions itself as "the control plane for production AI" — a unified API that sits between applications and LLM providers, handling routing, cost control, and governance. It complements Merge's existing products: Merge Unified (normalized SaaS integration API) and Merge Agent Handler (MCP-based secure tool access for AI agents). Merge targets engineering teams past the prototype stage who have outgrown their internal LLM routing layer.
Formidability
Score: 5/10
Launched 2026-03-31 with no track record in the AI gateway space, but rapidly adding capabilities. Merge has credibility in B2B integrations (Unified API, Agent Handler) and enterprise customer relationships, but Gateway is entering a crowded market against established players (OpenRouter, Portkey, LiteLLM, Cloudflare). The 5% markup on Pro is higher than OpenRouter's, and provider coverage is limited (7 providers vs. OpenRouter's 300+ models). The main threat is cross-selling to Merge's existing enterprise customer base who already use Unified API or Agent Handler. Strong compliance certifications (SOC 2 Type II, ISO 27001, HIPAA, GDPR) give it an enterprise edge. As of April 21 2026, pricing has undergone its 7th restructuring: Free tier stripped to basic access (routing + failover only), with budget controls, semantic caching, DLP, and compliance agents all consolidated on Pro tier. This makes Pro the clear "production-ready" tier and simplifies the Enterprise pitch to infrastructure concerns (BYOK, VPC, SLAs). The ongoing pricing oscillation (7 changes in 3 weeks) suggests internal disagreement about feature gating strategy, though the latest structure has a more coherent logic than prior iterations. BYOK priced at $0.05/Mtok.
Markets
- Primary: Engineering teams at mid-market and enterprise companies already using or evaluating Merge's Unified API / Agent Handler
- Secondary: Enterprise teams needing SOC 2 / HIPAA-compliant AI gateway with governance controls
- Geographic: Global (US-focused initially, given Merge's customer base)
Products
- Merge Gateway — unified LLM API with intelligent routing, cost controls, observability, and governance
- Merge Unified — normalized API for 200+ SaaS integrations (HR, ATS, CRM, accounting, etc.)
- Merge Agent Handler — MCP-based secure authentication and tool access for AI agents
- Native SDKs — Python (
merge-gateway-sdk) and TypeScript (merge-gateway-sdk)
Supported Models
| Provider | Models | Notes |
|---|---|---|
| OpenAI | GPT-5.3, GPT-5.3 mini, GPT-5.2, GPT-5.1, GPT-4o | Via openai/ prefix |
| Anthropic | Claude Opus 4.6, Claude Sonnet 4, Claude Haiku 4.5, Claude Haiku 3.5 | Via anthropic/ prefix |
| Gemini 2.5 Pro, Gemini 2.0 Flash | Via google/ prefix |
|
| AWS Bedrock | Various | Via Bedrock integration |
| Mistral | Various | Listed in launch materials |
| Cohere | Various | Listed on landing page |
| xAI (Grok) | Various | Listed in launch materials |
Last verified: 2026-04-16
Key Capabilities
| Capability | Status | Notes |
|---|---|---|
| Unified API | ✅ | Single endpoint for all providers |
| Intelligent routing | ✅ | Cost Optimized (ML-based, ~70% to budget models), Balanced, Lowest Cost (always cheapest) |
| Automatic failover | ✅ | Reroutes on provider outage |
| Budget controls | ✅ | Pro + Enterprise; per-team, per-project, per-customer |
| Context compression | ✅ | Reduces input tokens |
| Semantic caching | ✅ | Pro + Enterprise |
| Unified billing | ✅ | Single invoice across providers |
| Request-level logging | ✅ | Full observability with searchability |
| Policy enforcement | ✅ | Active — policy enforcement across all requests |
| Lowest Cost routing | ✅ | Performance mode: always selects cheapest provider for requested model |
| DLP (Data Loss Prevention) | ✅ | Pro + Enterprise |
| Compliance agents/alerts | ✅ | Pro + Enterprise |
| Tool calling | ✅ | OpenAI, Anthropic, Google models |
| Multimodal (images) | ✅ | OpenAI, Anthropic, Google, Bedrock |
| Multimodal (documents) | ✅ | Anthropic, Google, Bedrock (not OpenAI) |
| Embeddings API | ✅ | Create Embedding endpoint |
| Vendors API | ✅ | GET /vendors — lists execution vendors with ZDR/BYOK capability flags |
| Model pricing metadata | ✅ | Models endpoint returns pricing in USD/Mtok, context windows, capabilities |
| Tag-based routing | ✅ | Route request types to cost tiers via custom tags |
| Velocity spend alerts | ✅ | Detects 10x daily average spikes |
| Soft/hard budget limits | ✅ | Soft (alert) or hard (HTTP 402 block) |
| SSO/SAML | ✅ | Pro tier and above |
| BYOK | ✅ | Enterprise tier; $0.05 per million tokens |
| VPC/on-premises deployment | ✅ | Enterprise tier |
| Custom MSAs | ✅ | Enterprise tier |
| Custom deployment | ✅ | Enterprise tier |
| Model simulator | ✅ | Side-by-side model testing |
| OpenAI SDK compatibility | ✅ | Base URL swap |
| Anthropic SDK compatibility | ✅ | Base URL swap |
| LangChain compatibility | ✅ | Via OpenAI-compatible endpoint |
| Vercel AI SDK | ✅ | Native provider package (merge-gateway-ai-sdk-provider) + URL shim |
Last verified: 2026-04-21
Pricing
| Tier | Price | Notes |
|---|---|---|
| Free | $0 ($10 LLM credit) | No credit card required; LLM access, intelligent routing, automatic failover, unified billing only |
| Pro | LLM cost + 5% | Pay-as-you-go; adds budget controls, semantic caching, DLP, compliance agents, SSO/SAML, no spend threshold, email support |
| Enterprise | Custom | VPC/on-prem, BYOK ($0.05/Mtok), dedicated support, SLAs |
Last verified: 2026-04-21
URLs to Monitor
| URL | Label | Notes |
|---|---|---|
https://www.merge.dev/gateway |
Gateway Landing | Product landing page |
https://www.merge.dev/pricing-gateway |
Pricing | Pricing tiers and features |
https://docs.merge.dev/merge-gateway/get-started |
Docs | Technical documentation |
https://www.merge.dev/changelog |
Changelog | Product changelog (shared with Unified/Agent Handler) |
https://www.merge.dev/blog/gateway-announcement |
Launch Blog | Gateway announcement post |
https://docs.merge.dev/merge-gateway/features/tool-calling |
Tool Calling Docs | Function calling support |
https://docs.merge.dev/merge-gateway/features/multimodal/overview |
Multimodal Docs | Image/document support |
https://docs.merge.dev/merge-gateway/api-overview |
API Overview | Endpoints and auth |
https://docs.merge.dev/merge-gateway/features/cost-governance-and-savings |
Cost Governance | Budget controls and optimization |
https://www.merge.dev/blog/model-context-protocol-gateway |
MCP Gateway Blog | MCP gateway overview and competitive landscape |
https://www.merge.dev/blog/llm-gateway |
LLM Gateway Blog | LLM gateway comparison (Merge vs LiteLLM vs OpenRouter) |
Strategy
- Cross-sell to existing Merge customers: Merge's Unified API and Agent Handler customer base is the primary distribution channel — offer Gateway as the third pillar of their AI infrastructure
- Enterprise compliance play: SOC 2, ISO 27001, HIPAA, GDPR certifications out of the gate position Gateway for regulated industries
- Platform bundling: Unified API (data) + Agent Handler (tools) + Gateway (LLM routing) creates a comprehensive AI infrastructure stack
- Low-friction entry: $10 free credit, no credit card, OpenAI SDK compatibility — minimize switching cost
- Production-grade positioning: Targeting teams that have outgrown DIY routing, not prototypers — higher willingness-to-pay segment
- Pricing instability: Governance features have flipped 7 times since launch (Pro/Enterprise → all tiers April 10 → Pro/Enterprise April 12 → all tiers April 13 → simplified April 19 → contradictory April 20 AM → DLP/compliance Enterprise-only April 20 PM → all governance Pro+Enterprise April 21). Latest structure consolidates Pro as the full-featured production tier (budget controls, caching, DLP, compliance), while Free is stripped to basic access.
- Rapid feature velocity: Semantic caching shipped within days of launch; Vercel AI SDK added within two weeks; policy enforcement now active
- Content marketing positioning: Publishing SEO-targeted comparison blog posts (LLM Gateway guide) positioning Merge alongside OpenRouter and LiteLLM as top 3 platforms