openai-gpt-4-1OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA): Complete 2026 Pricing, Prompt Cache & Context-Mode Audit
OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA) is benchmarked at $2.00 (per 1M input tokens), $8.00 output, and $0.5 warm cached read (75% automatic prefix cache discount ($0.50/1M), $0 write surcharge (1024-token blocks)). Across 24-hour rolling W1–W4 telemetry probes, OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA) delivers a 410 ms P90 TTFT and 98 tok/s median throughput over a 1,000,000 tokens capacity.
1. OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA) Official Rate Card, Context-Cliff Threshold & Tokenizer Audit
Engineering teams evaluating OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA) must account for both nominal per-million token rates and underlying tokenizer density (o200k_base: 1.00x baseline (4.1 bytes/token)). When context history crosses the cliff boundary (No 2x cliff up to 1M tokens), unpruned tool logs trigger steep billing multipliers.
| Billing Dimension | Verified Rate (USD) | FinOps Guardrail & Settlement Rule |
|---|---|---|
| Uncached Standard Input | $2.00 / 1M | Keep uncached dynamic suffix below 15% of total prompt payload |
| Warm Prefix Cache Read | $0.5 / 1M | 75% automatic prefix cache discount ($0.50/1M), $0 write surcharge (1024-token blocks) |
| Cold Cache Creation / Write | $2 / 1M | Strip volatile timestamps from system prompt to prevent 1.25x cold rebuilds |
| Standard Streaming Output | $8.00 / 1M | Enforce pre-authorized token hold & atomic release on client SSE disconnect |
| 24h Asynchronous Batch API | $1 In / $4 Out | 50% flat discount for non-interactive evaluation & dataset indexing pipelines |
2. OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA) in Coding Agents: Raw Tool Output vs. Context-Mode Sandbox vs. Etuki Cache Router
In Claude Code, Cursor, Codex, and Gemini CLI, every raw MCP tool call dumps massive payloads into your context window (a Playwright snapshot = 56 KB; 20 GitHub issues = 59 KB; 47 × Read() = 700 KB). While open-source Context-Mode folds 315 KB → 5.4 KB (or 700 KB → 3.6 KB via ctx_execute subprocess sandboxing and SQLite FTS5 BM25 search), naive context rewriting can inadvertently invalidate Anthropic/OpenAI prefix cache breakpoints, turning 0.1x warm reads into 1.25x cold writes! Pairing Context-Mode with Etuki 4-Block Prefix Cache Pinning locks your static prefix while folding dynamic tool stdout:
3. Four Real-World Enterprise Workloads Monthly TCO on OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA)
| Enterprise Workload Profile | Monthly Volume | Unoptimized Bill | Etuki + Cache Bill | Net Monthly Savings |
|---|---|---|---|---|
| ① Indie Coding Agent (Claude Code / Cursor) | 15M In / 3M Out (75% Cache) | $54.00/mo | $26.40/mo | +$27.60 saved |
| ② Enterprise Customer RAG & Support Bot | 100M In / 15M Out (80% Cache) | $320.00/mo | $164.00/mo | +$156.00 saved |
| ③ Long-Context Legal & Financial SEC Audit | 250M In / 30M Out (>128K Window) | $990.00/mo | $341.00/mo | +$649.00 saved |
| ④ Async Data Extraction Pipeline (Batch API) | 500M In / 80M Out (24h Batch) | $1640.00/mo | $820.00/mo | +$820.00 saved (50%) |
4. Multi-Host Gateway Arbitrage & Drop-In GA Alternatives for OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA)
Compare hosting OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA) directly vs. enterprise gateways, or offload sub-400 token mechanical tool calls to high-speed GA alternatives:
5. Ready-to-Copy IDE MCP & Lifecycle Hooks for OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA) (Claude Code / Cursor / VS Code / ZCode)
Drop these configurations into your repository to activate Context-Mode local FTS5 tool-output sandboxing alongside Etuki FinOps MCP 4-block cache breakpoint pinning and context-cliff circuit breakers:
{
"servers": {
"context-mode": {
"command": "context-mode"
},
"etuki-finops-mcp": {
"url": "https://www.etuki.com/api/v1/mcp",
"env": {
"ETUKI_TARGET_MODEL": "openai-gpt-4-1",
"ETUKI_MAX_CONTEXT_TOKENS": "120000"
}
}
}
}{
"hooks": {
"PreToolUse": [
{
"matcher": "Bash|Read|Grep|WebFetch|ctx_execute",
"command": "context-mode hook claude-code pretooluse"
}
],
"PostToolUse": [
{
"matcher": "*",
"command": "context-mode hook claude-code posttooluse"
}
],
"SessionStart": [
{
"matcher": "*",
"command": "context-mode hook claude-code sessionstart"
}
]
}
}6. Frequently Asked Questions: OpenAI GPT 6.1 Terra (Mapped to OpenAI GPT-4.1 GA) Pricing & Optimization
ctx_execute (to 3.6 KB) while locking 4 static cache breakpoints via Etuki cuts total spend to $33.50 — saving $348.50 (91%).