Claude Sonnet 4 costs $3.00/1M input tokens and $15.00/1M output tokens as of 2026-06-27. Anthropic publishes this model with a 1M tokens context window. o10 lists Claude Sonnet 4 on OpenRouter at routing band C2. API slug anthropic-claude-sonnet-4. Verify list prices against the venue you call.
Last updated: 2026-06-27. Full catalog. Reference prices are dated snapshots. Compare total cost and measured task quality before choosing a route.
Claude Sonnet 4 is a chat model from anthropic (slug: anthropic-claude-sonnet-4). Pick Claude Sonnet 4 when you need Anthropic's mid-frontier coding and writing tier. It is the default Claude workhorse: cheaper than Opus, stronger than Haiku on long-context agent work. Published input pricing starts at $3.00/1M tokens. Context window: 1M tokens.
Catalog snapshot 2026-06-27.
Pick Claude Sonnet 4 when you need Anthropic's mid-frontier coding and writing tier. It is the default Claude workhorse: cheaper than Opus, stronger than Haiku on long-context agent work. Claude Sonnet 4 sits between Claude Haiku (economy) and Claude Opus (flagship). Move down to Haiku when evals pass at C0/C1; move up to Opus only when the quality floor needs the extra reasoning.
Claude Sonnet 4 sits between Claude Haiku (economy) and Claude Opus (flagship). Move down to Haiku when evals pass at C0/C1; move up to Opus only when the quality floor needs the extra reasoning.
Claude Sonnet 4 costs $3.00/1M input tokens and $15.00/1M output tokens in the gateway catalog snapshot (2026-06-27). Endpoint pricing may differ by fulfillment host.
Sourced from gateway catalog snapshot.
Claude Sonnet 4 is configured on OpenRouter. Known host IDs: openrouter: openrouter/anthropic/claude-sonnet-4. This model is routable through o10 eval-gated routing.
Claude Sonnet 4 supports a 1M tokens context window in the gateway catalog snapshot. Context limits may vary by fulfillment host endpoint.
Claude Sonnet 4 is classified at o10 routing band C2. Bands group models by cost tier and eval profile: C0 (economy), C1 (standard), C2 (capable), C3/C4 (frontier). Production routing is enabled for this slug.
Claude Sonnet 4 is attributed to source provider anthropic in the o10 catalog. Fulfillment hosts (OpenRouter) supply API access; list pricing may differ by venue.
Claude Sonnet 4 in the o10 unified catalog.
| Field | Value |
|---|---|
| o10 slug | `anthropic-claude-sonnet-4` |
| Type | text |
| Band | C2 |
| Routable | Yes |
| Source provider | anthropic |
| Primary host | OpenRouter |
| Gateway ID | `anthropic/claude-sonnet-4` |
| Context window | 1,000,000 tokens |
| Released | 2025-05-22 |
Gateway snapshot pricing for Claude Sonnet 4.
| Unit | Price |
|---|---|
| Input | $3/1M tokens |
| Output | $15/1M tokens |
Upstream venues configured for Claude Sonnet 4.
| Host | Upstream model ID |
|---|---|
| openrouter | openrouter/anthropic/claude-sonnet-4 |
Endpoint-level pricing and latency from the gateway catalog.
| Provider | Input ($/1M) | Latency p50 | Uptime 1d |
|---|---|---|---|
| anthropic | $3 | 1380.5ms | 9993.9% |
| bedrock | $3 | 919ms | 10000.0% |
| vertexAnthropic | $3 | 603.5ms | 10000.0% |
Eval-gated model selection for this slug.
o10 slug: anthropic-claude-sonnet-4. Band: C2. Routable: yes.
See [/models/routing](/models/routing) for smart aliases (o10/auto, o10/frontier, o10/squad) and [/kyi](/kyi) for governance.
Fulfillment catalog 2026-06-27. Gateway pricing joined where slug match exists.
Claude Sonnet 4 costs $3.00/1M input tokens and $15.00/1M output tokens in the gateway snapshot (2026-06-27). Verify against your provider's published pricing.
Claude Sonnet 4 supports 1M tokens in the gateway catalog snapshot. Host-specific endpoints may differ.
Claude Sonnet 4 (anthropic-claude-sonnet-4) is configured on: OpenRouter. Upstream model IDs are listed in the fulfillment routes section.
Yes. Claude Sonnet 4 is routable at band C2. Send model: "anthropic-claude-sonnet-4" or use an o10 smart routing alias.
Use o10 slug "anthropic-claude-sonnet-4" or gateway ID "anthropic/claude-sonnet-4" depending on your integration. Gateway-compatible endpoints accept OpenAI-style /v1 requests.
o10 routes Claude Sonnet 4 only when per-use-case evals clear at your quality floor. Band C2 indicates cost tier. See /kyi for governance and /models/routing for smart aliases.
The o10 slug is "anthropic-claude-sonnet-4"; the unified gateway ID is "anthropic/claude-sonnet-4". Host IDs: openrouter: openrouter/anthropic/claude-sonnet-4. Pricing snapshot date: 2026-06-27.
Claude Sonnet 4 is hosted as openrouter: openrouter/anthropic/claude-sonnet-4. o10 maps those upstream IDs to slug "anthropic-claude-sonnet-4".