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GPT-5.1
openai·openai/gpt-5.1·GA·Closed·gpt series
Sharper GPT-5 generation for coding, product work, and tool-assisted tasks
At a glance
Official price$1.25 / $10.00 per 1M
Cache read $0.125 · OpenAI
Lowest paid$1.07 / $8.50
OpenCode Zen Gateway · 1.3× spread
Context400,000
Output limit128,000
Capabilities
✓ Reasoning✓ Tool use✓ Structured outputTemperature✓ Attachments
Modalities
TextImagePDFAudio
Knowledge cutoff2024-09-30
Released / updated2025-11-13 / 2025-11-13
Quality & performanceArtificial Analysis · Intelligence Index v4.1 · rep. tier high
Intelligence37.5
Value13
Coding49.4
Agentic21.6
Output speed112 tok/s
TTFT28.41 s
Cost per task$0.3040
Value formulaIQ 37.5 ÷ min blended $2.928 = 13
Reasoning tier → intelligence / speed (higher tier = stronger but slower)
Non-reasoningIQ 20.7 · 96 tok/s
highIQ 37.5 · 112 tok/s
Quality is independently evaluated by Artificial Analysis. Speed/latency are model-level medians.
Available at 28 providers26 with public prices
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| OpenCode Zen | Gateway | $1.07 | $8.50 | $0.107 | — | 400,000 | 128,000 | |
| Poe | Gateway | $1.10 | $9.00 | $0.11 | — | 400,000 | 128,000 | |
| Jiekou.AI | Gateway | $1.13 | $9.00 | — | — | 400,000 | 128,000 | |
| OrcaRouter | Gateway | $1.25 | $10.00 | $0.125 | — | 400,000 | 128,000 | |
| NanoGPT | Gateway | $1.25 | $10.00 | $0.125 | — | 400,000 | 128,000 | |
| Impossibl | Gateway | $1.25 | $10.00 | $0.125 | — | 400,000 | 128,000 | |
| OpenRouter | Gateway | $1.25 | $10.00 | $0.125 | — | 400,000 | 128,000 | |
| Databricks databricks-gpt-5-1 | Cloud | $1.25 | $10.00 | $0.125 | — | 400,000 | 128,000 | |
| OpenAIOfficial | First-party | $1.25 | $10.00 | $0.125 | — | 400,000 | 128,000 | |
| NEAR AI Cloud | Gateway | $1.25 | $10.00 | $0.125 | — | 400,000 | 128,000 | |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Your usage cost
1OpenCode Zen$523.44
2Poe$551.20
3ZenMux$614.40
4OrcaRouter$615.00
5NanoGPT$615.00
6Impossibl$615.00
9OpenAI · Official$615.00
Switch to OpenCode Zen to save $91.56/mo (15%). The gap is small, so staying on the official channel is fine.
Note: this is a gateway; verify availability and rate limits yourself.
Benchmark
No upstream benchmark data for this model. For quality, see the Artificial Analysis intelligence score above.
Reasoning control
effort = noneeffort = loweffort = mediumeffort = higheffort = xhigheffort = maxeffort = minimal
3 / 28 providers expose no reasoning control (reasoning_options: []).
Related models
RouteLLMsame series$3.00 / $15.00GPT-Realtime-2.1same series$4.00 / $24.00NanoGPT Helpsame series$0 / $0Kimi K2.6cheaper alternative$0.95 / $4.00DeepSeek V4 Procheaper alternative$0.435 / $0.87DeepSeek V4 Flashcheaper alternative$0.14 / $0.28Kimi K2.7 Codecheaper alternative$0.95 / $4.00
Price historyone sample accumulated per data sync
Input listOutput listMin blended