GPT-5.6 Terra
OpenAI's mid-tier model: $2 per million input tokens and $12 per million output tokens, with a 922K-token context window.
Input / 1M tokens$2
Cached input / 1M$0.20
Output / 1M tokens$12
Example task$3.2$1.76 with 80% cached
| Maker | OpenAI · official pricing |
|---|---|
| Context window | 922K tokens · up to 128K output |
| Capabilities | tool calling · reasoning · images |
Prices from LiteLLM's open price list, updated Oct 9, 2026. "Example task": 1M input + 100K output tokens. Check the provider's page before you budget.
AI agents that can use GPT-5.6 Terra
These agents list OpenAI as a model provider in their documentation.
| # | Agent | Gid Score | Downloads 7d | 7d | 30d | Stars | Latest release | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |
OpenAI CodexOpenAI |
84 | 21.2M | down 17.3% | up 25.8% | 128K+148/day | 0.162.0yesterday | ||||
| 4 |
LangChainLangChain |
78 | 41.8M | down 6.5% | down 17.4% | 147K+46/day | 1.4.4yesterday | ||||
| 6 |
PiEarendil Inc. (created by Mario Zechner) |
75 | 4.4M | down 3.3% | up 64.7% | 114K+334/day | 1.1.02d ago | ||||
| 7 |
OpenCodeAnomaly (SST team) |
74 | 3.1M | up 7.0% | up 17.7% | 212K+184/day | 1.18.353d ago | ||||
| 9 |
CursorAnysphere (owned by SpaceX) |
72 | — | — | — | 33.3K+3/day | — | ||||
| 10 |
GitHub CopilotGitHub (Microsoft) |
71 | — | — | — | — | — | ||||
| 12 |
AI SDKVercel |
68 | 29.1M | down 12.4% | up 34.3% | 27.2K+20/day | 7.0.136today | ||||
| 15 | 63 | 8.7M | down 0.4% | up 7.1% | 8,746+20/day | 0.2.0yesterday | |||||
| 23 |
Replit AgentReplit |
60 | — | — | — | — | — | ||||
| 24 |
ZedZed Industries |
59 | — | — | — | 91.5K+51/day | 1.23.22d ago | ||||
| 26 |
MastraMastra |
58 | 1.9M | down 9.3% | up 33.3% | 28.7K+25/day | 1.75.02d ago | ||||
| 27 |
Deep AgentsLangChain |
58 | 1.9M | up 4.1% | up 19.3% | 30K+23/day | 0.1.832d ago | ||||
| 30 |
|
57 | 590K | down 12.7% | up 16.8% | 37.9K+31/day | 1.77.2yesterday | ||||
| 31 |
Cloudflare Agents SDKCloudflare |
56 | 1.9M | down 14.7% | up 37.0% | 5,797+13/day | 0.27.02d ago | ||||
| 33 |
Oh My PiStencil Labs (Can Bölük) |
56 | 203K | down 22.0% | up 65.4% | 34.7K+104/day | 18.8.6yesterday | ||||
| 34 |
DSPyStanford NLP |
55 | 1.4M | up 3.3% | down 2.4% | 38.6K+16/day | 3.4.014d ago | ||||
| 36 |
OpenAI Agents SDKOpenAI |
55 | 5.1M | down 4.6% | down 37.8% | 29.9K+21/day | 0.23.17d ago | ||||
| 37 |
JunieJetBrains |
54 | 6,211 | up 1,152% | — | 474+1/day | 3731.1yesterday | ||||
| 38 |
WarpWarp |
54 | — | — | — | 65.4K+18/day | 0.2026.06.03.…4mo ago | ||||
| 40 |
AgnoAgno |
54 | 508K | up 3.4% | down 7.6% | 42.6K+25/day | 3.1.2yesterday | ||||
| No agents match that filter. | |||||||||||
Agents that take any provider
These work with OpenRouter or any OpenAI-compatible endpoint, so they can usually run GPT-5.6 Terra too.
LangGraph Agent Development Kit (ADK) Grok Build Mistral Vibe Reasonix DeepCode
Cheaper mid-tier alternatives
Gemini 3.8 Flash · $1.12 Kimi K2.7 Code · $1.35 DeepSeek V4 Pro · $1.72 GLM-5.3 · $1.84