gpt-5.1-codex-max
OpenRouter · chat model
gpt-5.1-codex-max is listed here as a chat model from OpenRouter. This page shows simple API pricing, token limits, and capability flags so you can compare it with similar options.
Input
$1.2500 / 1M tokens
Output
$10.0000 / 1M tokens
Cached input
$0.1250 / 1M tokens
Context
128.0K
Quick read
Best for
Use this page when you need a fast view of cost, context size, and supported features before testing the model in your own workload.
Things to verify
Always check the provider page for discounts, cache pricing, region rules, and any model limits that may not appear in public metadata.
Pricing
| Item | Price |
|---|---|
| Input | $1.2500 / 1M tokens |
| Output | $10.0000 / 1M tokens |
| Cached input | $0.1250 / 1M tokens |
| Embedding | $1.2500 / 1M tokens |
Token limits
Context window
128.0K
Max input tokens
400.0K
Max output tokens
128.0K
Max tokens
128.0K
Capabilities
| Capability | Supported |
|---|---|
| Vision | ✅ |
| Function calling | ✅ |
| Parallel function calling | — |
| Tool choice | ✅ |
| Prompt caching | ✅ |
| Reasoning | ✅ |
| Response schema | — |
| System messages | — |
| Audio input | — |
| Audio output | — |
| Web search | — |
| PDF input | — |
| Video input | — |
Benchmarks
Most benchmark rows are attached to the base model family rather than this provider route. Open benchmark explorer
| Benchmark | Score | Metric | Scope | Checked | Source |
|---|---|---|---|---|---|
| SWE-bench Verified | 76.3% | accuracy (%) | Base model: gpt-5.1 (GPT-5.1 (high)) | 2026-05-31 | Link |
| GPQA Diamond | 88.1% | accuracy (%) | Base model: gpt-5.1 (GPT-5.1 (high)) | 2026-05-31 | Link |
| Tau 2-bench Telecom | 95.6% | accuracy (%) | Base model: gpt-5.1 (GPT-5.1 (high)) | 2026-05-31 | Link |
Sources
| Source links | |
| Pricing data | LiteLLM model cost map |
| Synced at | 2026-05-28 |
Docs
| Official docs |
Similar models
This list is ranked by overall similarity. Use filters to emphasize the lens that matters most for the replacement you are making.
Comparing from
| Model | Cost | Input shape | Features | Context | Why it is close |
|---|---|---|---|---|---|
| gpt-5.1-codex-max OpenRouter | In $1.2500 / 1M tokens Out $10.0000 / 1M tokens | imagetext
Output: text | VisionFunction callingTool choicePrompt caching | 128.0K | Current model Reference row |
| Model | Cost | Input shape | Features | Context | Why it is close |
|---|---|---|---|---|---|
| gpt-5.1-2025-11-13 Azure | In $1.2500 / 1M tokens Out $10.0000 / 1M tokens | imagetext pdf
Output: text | VisionFunction callingTool choicePrompt caching | 128.0K | Text + image covered Overall 89% |
| gpt-5 Azure | In $1.2500 / 1M tokens Out $10.0000 / 1M tokens | imagetext pdf
Output: text | VisionFunction callingTool choicePrompt caching | 128.0K | Text + image covered Overall 89% |
| gpt-5-2025-08-07 Azure | In $1.2500 / 1M tokens Out $10.0000 / 1M tokens | imagetext pdf
Output: text | VisionFunction callingTool choicePrompt caching | 128.0K | Text + image covered Overall 89% |
| gpt-5.1 Azure | In $1.2500 / 1M tokens Out $10.0000 / 1M tokens | imagetext pdf
Output: text | VisionFunction callingTool choicePrompt caching | 128.0K | Text + image covered Overall 89% |
| gpt-5 OpenAI | In $1.2500 / 1M tokens Out $10.0000 / 1M tokens | imagetext pdf
Output: text | VisionFunction callingTool choicePrompt caching | 128.0K | Text + image covered Overall 88% |
| gpt-5.1 OpenAI | In $1.2500 / 1M tokens Out $10.0000 / 1M tokens | imagetext pdf
Output: text | VisionFunction callingTool choicePrompt caching | 128.0K | Text + image covered Overall 88% |
| o4-mini-2025-04-16 Azure | In $1.2100 / 1M tokens Out $4.8400 / 1M tokens | imagetext
Output: text | VisionFunction callingTool choicePrompt caching | 100.0K | Text + image covered Overall 87% |
| gpt-5.2 OpenRouter | In $1.7500 / 1M tokens Out $14.0000 / 1M tokens | imagetext file
Output: text | VisionFunction callingTool choicePrompt caching | 128.0K | Same provider Overall 86% |
| o4-mini-2025-04-16 Azure | In $1.1000 / 1M tokens Out $4.4000 / 1M tokens | imagetext
Output: text | VisionFunction callingTool choicePrompt caching | 100.0K | Text + image covered Overall 85% |
| gpt-5-codex OpenRouter | In $1.2500 / 1M tokens Out $10.0000 / 1M tokens | imagetext
Output: text | Tool choiceReasoning | 128.0K | Same provider Overall 85% |
| gpt-5.2-codex OpenRouter | In $1.7500 / 1M tokens Out $14.0000 / 1M tokens | imagetext
Output: text | Tool choiceReasoning | 128.0K | Same provider Overall 79% |
| claude-sonnet-4.6 OpenRouter | In $3.0000 / 1M tokens Out $15.0000 / 1M tokens | imagetext file
Output: text | VisionFunction callingTool choicePrompt caching | 128.0K | Same provider Overall 79% |
| gpt-5 OpenRouter | In $1.2500 / 1M tokens Out $10.0000 / 1M tokens | imagetext file
Output: text | Tool choiceReasoning | 128.0K | Same provider Overall 77% |
| azure Azure | In $15.0000 / 1M tokens Out $60.0000 / 1M tokens | imagetext
Output: text | VisionFunction callingTool choicePrompt caching | 100.0K | Text + image covered Overall 75% |
| o1-2024-12-17 Azure | In $15.0000 / 1M tokens Out $60.0000 / 1M tokens | imagetext
Output: text | VisionFunction callingTool choicePrompt caching | 100.0K | Text + image covered Overall 75% |
| claude-haiku-4.5 OpenRouter | In $1.0000 / 1M tokens Out $5.0000 / 1M tokens | imagetext file
Output: text | VisionFunction callingTool choicePrompt caching | 200.0K | Same provider Overall 75% |
| grok-4.20-multi-agent-beta-0309 xai | In $2.0000 / 1M tokens Out $6.0000 / 1M tokens | imagetext
Output: text | VisionFunction callingTool choicePrompt caching | 2.0M | Text + image covered Overall 74% |
| grok-4.20-beta-0309-reasoning xai | In $2.0000 / 1M tokens Out $6.0000 / 1M tokens | imagetext
Output: text | VisionFunction callingTool choicePrompt caching | 2.0M | Text + image covered Overall 74% |
| gpt-5.1 Azure | In $1.2500 / 1M tokens Out $10.0000 / 1M tokens | imagetext pdf
Output: image, text | VisionFunction callingTool choicePrompt caching | 128.0K | Partial I/O overlap Overall 57% Missing text, image |
| gpt-5.1-chat Azure | In $1.2500 / 1M tokens Out $10.0000 / 1M tokens | imagetext pdf
Output: image, text | VisionFunction callingTool choicePrompt caching | 128.0K | Partial I/O overlap Overall 57% Missing text, image |
| gpt-5.1-chat-2025-11-13 Azure | In $1.2500 / 1M tokens Out $10.0000 / 1M tokens | imagetext pdf
Output: image, text | VisionPrompt cachingReasoning | 16.4K | Partial I/O overlap Overall 39% Missing text, image |
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