GPT-6.1 Terra
- Family
- GPT-6.1
- Released
- 2026-10-26
- Context
- 1.05M
- Max output
- 128K
- Knowledge cutoff
- 2026-06
- Specialization
- general
- Openness
- Proprietary
- License
- ProprietaryRestricted
- Weights
- Not released
- Code
- Unknown
- Training
- Pretrained
Cheapest of 4 routes · OpenAI API · cache read $0.050
About
OpenAI GPT-6.1 Terra (API id gpt-6.1-terra), announced October 26, 2026, is the GPT-6.1 tier for fast, efficient visual reasoning, precise computer use, and clear, natural writing, positioned below GPT-6.1 Sol and GPT-6 Astra for complex coding and in-depth research. First-party docs: 1,050,000 context window (922,000 max input), 128,000 max output, knowledge cutoff Jun 1, 2026, text and image input to text output, reasoning.effort none/low/medium (default)/high/xhigh/max, function calling, structured outputs, prompt caching, Batch API, and computer use and code interpreter via Responses tools; fine-tuning not supported. Available in ChatGPT Work and Codex for Plus, Pro, Enterprise, and Edu users.
Providers(4)
Compare all 4Compare API pricing across 4 tracked provider routes for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Batch in / out | Cache | Route |
|---|---|---|---|---|---|
| OpenAI API | $1.00 | $5.00 | $0.500 / $2.50 | read $0.050 | Serverless |
| OpenRouter | $1.00 | $5.00 | - | read $0.050 | Serverless |
| Vercel AI Gateway | $1.00 | $5.00 | - | read $0.050 | Serverless |
| Azure OpenAI | - | - | - | - | ServerlessPartial |
Available via routers & gateways(16)
LiteLLM
GatewayOpen-source Python SDK and proxy server that unifies 100+ LLM APIs behind a single OpenAI-compatible interface, with load balancing, cost tracking, and configurable failover.
OpenRouter
HybridUnified hybrid gateway to 400+ models from 60+ providers via a single OpenAI-compatible API, with optional auto-routing that selects the best model per prompt.
Portkey
GatewayProduction AI gateway routing to 1,600+ LLMs with failover, load balancing, semantic caching, and guardrails; Apache 2.0 core is fully self-hostable with the complete feature set.
AIRouter
RouterCommercial LLM router that analyzes incoming requests and routes to the optimal model for cost/quality/latency via a drop-in OpenAI-compatible API, with a privacy-preserving embedding mode that avoids sending prompt content.
Azure AI Foundry Model Router
RouterMicrosoft Azure AI Foundry's native model router that uses a trained ML model to route each prompt in real time to the optimal Azure-hosted model, with Balanced/Cost/Quality mode selection and automatic failover.
Helicone
GatewayObservability-first AI gateway with routing, caching, rate limiting, and request tracing; Apache 2.0 open-source core with a managed hosted tier for logging and analytics.
Capabilities
Benchmark peer barsfor Coding
No task-mapped benchmark peers are available for this model yet.
Benchmark scores(3)
| Benchmark | Score | Version | Evaluation | Source |
|---|---|---|---|---|
| 50.3 | Terminal-Bench 4.0; max reasoning effortObserved 2026-10-26 | Configuration: gpt-6.1-terra (Max) Harness: Not stated in the launch post Evaluator: OpenAI Confidence: self-reported Notes: OpenAI launch post chart 'Terminal-Bench 4.0' (Max 0.503; Low 0.248, Medium 0.358, High 0.418, Xhigh 0.464). Text: 'At maximum reasoning effort, GPT‑6.1 Terra solves 50.3% of tasks'. Not on the tbench.ai 4.0 board at capture. Retrieved 2026-10-26. | ||
| 60.0 | Agents' Last Exam v1 (OpenAI launch chart); max reasoning effortObserved 2026-10-26 | Configuration: gpt-6.1-terra (Max) Harness: Not stated in the launch post Evaluator: OpenAI Confidence: self-reported Notes: OpenAI launch post chart 'Agents’ Last Exam v1' (Max 0.600; Low 0.559, Medium 0.576, High 0.572, Xhigh 0.585). Chart is labelled v1; the official ALE board shows v1.1 and did not list GPT-6.1 Terra at capture. Retrieved 2026-10-26. | ||
| 74.2 | OSWorld 2.1, offline set; max reasoning effortObserved 2026-10-26 | Configuration: gpt-6.1-terra (Max) Harness: Not stated in the launch post Evaluator: OpenAI Confidence: self-reported Notes: OpenAI launch post chart 'OSWorld 2.1, offline set' (Max 0.742; Low 0.538, Medium 0.667, High 0.687, Xhigh 0.713). Offline set, harness and run count not stated. Retrieved 2026-10-26. |
Migration checks
No linked migration route is available for this model yet.
API versions
gpt-6.1-terraGPT-6.1 TerraGPT‑6.1 TerraRankings & picks(2)
Cheapest of 4 routes · OpenAI API · cache read $0.050