OpenAI
·Released on Nov 13, 2025GPT-5.1 API Benchmarks, Pricing & Provider Data
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GPT-5.1 benchmark, API pricing, and provider data cover 1462 API providers, with prices starting at $0.0027/request. GPT-5.1 free API options are available from 8 providers. The page also shows measured API speed and first-token latency.
OpenAI GPT-5.1 is a GPT-5 series model focused on improved reasoning depth, tool use, and reliable long-form generation for production AI applications.
Quality
#50of 100
56.0
LMSpeed score
Speed
142char/s
2.78 s
Cost
#119of 180
$0.0027/ 1M · 8:1 in:out
$0.0004 in · $0.0023 out
Category Performance
Observed-capability estimates with uncertainty reported separately from independent benchmark families.
- Coverage
- 6 / 8
- Methodology
- V3.0
#1Math54Provisional1/4 Measured dimensions
80% interval: 37.9–70.1
foundational mathPrior only
competition mathPrior only
proof frontier54
frontiermath · frontier_math_v2_tier4 / frontiermath · frontier_math_v2_tiers13
applied tool mathPrior only
#1Reasoning54RatedGlobal rank #253/4 Measured dimensions
80% interval: 45.3–62.6
abstract logicPrior only
scientific causal47.4
critpt · critpt / gpqa · gpqa / hle · hle
multistep constraints58.4
mmlu_pro · mmlu_pro
evidence verification56.2
lcr · lcr
#3Instruction following53.5Provisional1/4 Measured dimensions
80% interval: 37.5–69.5
constraint followingPrior only
structured outputPrior only
novel instruction generalization53.5
ifbench · aa_if_bench
long multiturn instructionPrior only
#4Knowledge53Provisional1/4 Measured dimensions
80% interval: 37.0–69.0
broad knowledge53
aa_omniscience · aa_omniscience_index
professional knowledgePrior only
factualityPrior only
retrieval open bookPrior only
#5Coding49.1Estimated2/4 Measured dimensions
80% interval: 38.0–60.3
code generation48.4
livecodebench · livecodebench / scicode · scicode
repository engineering49.9
vibecode · vibe_code_bench
debugging testingPrior only
tooling qualityPrior only
#6Agents47.7Estimated3/4 Measured dimensions
80% interval: 38.4–56.9
planning46
deep_planning · gert_labs
tool use49.6
tau · tau2_bench
environment execution47.4
gdpval_aa · benchlm_agentic_gdpval_aa
recovery reliabilityPrior only
No data:MultilingualMultimodal
Specifications
Input and output token limits for this model, plus how it ranks on long-context understanding.
INPUT
400Ktokens
≈ 480 pages of text
OUTPUT
128Ktokens
8K128K1M4M
400K
Features
Rankings
Excels at
It's decent at
Falls behind in
Detailed scores
Updated: Aug 31, 2026Overall
undefined metric} other undefined metrics}}
Overall score56.0#50 / 100
Overall
undefined metric} other undefined metrics}}
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
Pricing
undefined metric} other undefined metrics}}
Input price$1.25/M#119 / 180Output price$10.00/M#138 / 180
Pricing
undefined metric} other undefined metrics}}
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
Agents
V3.0undefined metric} other undefined metrics}} · Estimated
Score47.780% interval38.4–56.93/4 Measured dimensionsAA Agentic Index21.6#47 / 65Τ²-bench results81.9#53 / 82
Agents
V3.0undefined metric} other undefined metrics}} · Estimated
Dimensions and evidence
Planning & decomposition46
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
deep_planning · gert_labs · z -0.52 · q 1.00
Tool use49.6
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
tau · tau2_bench · z -0.17 · q 1.00
Environment & long-horizon execution47.4
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
gdpval_aa · benchlm_agentic_gdpval_aa · z -0.52 · q 1.00
Recovery & completion reliabilityPrior only
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
Coding
V3.0undefined metric} other undefined metrics}} · Estimated
Score49.180% interval38.0–60.32/4 Measured dimensionsLiveCodeBench86.8%#4 / 115SciCode43.3%#56 / 205
Coding
V3.0undefined metric} other undefined metrics}} · Estimated
Dimensions and evidence
Code generation48.4
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
livecodebench · livecodebench · z 0.03 · q 1.00
scicode · scicode · z -0.13 · q 1.00
Repository engineering49.9
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
vibecode · vibe_code_bench · z -0.02 · q 1.00
Debugging & testingPrior only
Tool-assisted development & qualityPrior only
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
LiveCodeBenchV3 evidence
LMSpeed rank#4
Score86.8%
Sourceartificialanalysis.ai
UpdatedAug 31, 2026
Confidence4
SciCodeV3 evidence
LMSpeed rank#56
Score43.3%
Sourceartificialanalysis.ai
UpdatedAug 31, 2026
Confidence4
Reasoning
V3.0undefined metric} other undefined metrics}} · Rated
Score54#2580% interval45.3–62.63/4 Measured dimensionsMMLU-Pro80.1%#62 / 129GPQA87.3%#48 / 212
Reasoning
V3.0undefined metric} other undefined metrics}} · Rated
Dimensions and evidence
Abstract logicPrior only
Scientific & causal reasoning47.4
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
critpt · critpt · z 0.24 · q 1.00
gpqa · gpqa · z -0.60 · q 1.00
hle · hle · z -0.69 · q 1.00
Multi-step constraints58.4
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
mmlu_pro · mmlu_pro · z 0.92 · q 1.00
Evidence integration & verification56.2
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
lcr · lcr · z 0.47 · q 1.00
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
MMLU-ProV3 evidence
LMSpeed rank#62
Score80.1%
Sourceartificialanalysis.ai
UpdatedAug 31, 2026
Confidence4
Knowledge
V3.0undefined metric} other undefined metrics}} · Provisional
Score5380% interval37.0–69.01/4 Measured dimensionsArtificial Analysis Intelligence Index37.5#52 / 111AA-GPQA Diamond87.3#44 / 108
Knowledge
V3.0undefined metric} other undefined metrics}} · Provisional
Dimensions and evidence
Broad knowledge53
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
aa_omniscience · aa_omniscience_index · z 0.32 · q 1.00
Professional knowledgePrior only
FactualityPrior only
Retrieval & open-book usePrior only
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
Artificial Analysis Intelligence IndexV3 evidence
LMSpeed rank#52
Score37.5
Sourcebenchlm.ai
UpdatedAug 20, 2026
Confidence1
AA-Omniscience IndexV3 evidence
LMSpeed rank#24
Score5.4
Sourcebenchlm.ai
UpdatedAug 20, 2026
Confidence1
AA-Omniscience Hallucination Rate
LMSpeed rank#72
Score51.9
Sourcebenchlm.ai
UpdatedAug 20, 2026
Confidence1
Math
V3.0undefined metric} other undefined metrics}} · Provisional
Score5480% interval37.9–70.11/4 Measured dimensionsMath score49.7#36 / 62FrontierMath v2 (Tiers 1-3)31.0#19 / 47
Math
V3.0undefined metric} other undefined metrics}} · Provisional
Dimensions and evidence
Foundational mathPrior only
Competition mathPrior only
Advanced proofs54
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
frontiermath · frontier_math_v2_tier4 · z 0.43 · q 1.00
frontiermath · frontier_math_v2_tiers13 · z 0.21 · q 1.00
Applied & tool-assisted mathPrior only
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
FrontierMath v2 (Tiers 1-3)V3 evidence
LMSpeed rank#19
Score31.0
Sourcebenchlm.ai
UpdatedAug 20, 2026
Confidence1
FrontierMath v2 (Tier 4)V3 evidence
LMSpeed rank#16
Score12.5
Sourcebenchlm.ai
UpdatedAug 20, 2026
Confidence1
Multilingual
V3.0undefined metric} other undefined metrics}} · No data
No data80% interval30.8–69.20/4 Measured dimensions
Multilingual
V3.0undefined metric} other undefined metrics}} · No data
Dimensions and evidence
Cross-language understandingPrior only
Multilingual generationPrior only
Reasoning transferPrior only
Low-resource robustnessPrior only
Multimodal
V3.0undefined metric} other undefined metrics}} · No data
80% interval30.8–69.20/4 Measured dimensionsAA-MMMU-Pro75.5#28 / 65Design Arena Website1198.0#48 / 75
Multimodal
V3.0undefined metric} other undefined metrics}} · No data
Dimensions and evidence
Perception & OCRPrior only
Document & spatial understandingPrior only
Visual reasoningPrior only
Video & grounded actionPrior only
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
Instruction following
V3.0undefined metric} other undefined metrics}} · Provisional
Score53.580% interval37.5–69.51/4 Measured dimensionsAA-IFBench72.9#28 / 84
Instruction following
V3.0undefined metric} other undefined metrics}} · Provisional
Dimensions and evidence
Constraint followingPrior only
Structured outputPrior only
Novel-instruction generalization53.5
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
ifbench · aa_if_bench · z 0.19 · q 1.00
Multi-turn & long instructionsPrior only
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
OpenRouter endpoints
5 endpointsThird-party OpenRouter endpoint data, shown separately from LMSpeed measurements. Some 30-minute live performance fields only appear after syncing with an OpenRouter API key.
| Provider endpoint | Input | Output | 1d uptime | 30m latency | 30m throughput | Context / output |
|---|---|---|---|---|---|---|
OpenAI openai/flex | $0.625/M | $5/M | 100% | — | — | undefined tokens / undefined tokens |
Azure azure | $1.25/M | $10/M | 99.9% | — | — | undefined tokens / undefined tokens |
OpenAI openai | $1.25/M | $10/M | 99.7% | — | — | undefined tokens / undefined tokens |
Azure azure/swedencentral | $1.38/M | $11/M | — | — | — | undefined tokens / undefined tokens |
OpenAI openai/fast | $2.50/M | $20/M | — | — | — | undefined tokens / undefined tokens |
Pricing Comparison
Compare GPT-5.1 API pricing across 1454 providers. Prices range from $0.0027/request to $495.00/M. Yun API offers the lowest rate at $0.0027/request. 8 providers offer free API credits or a free tier.
| Provider | Health | Model Variant | Group | Input ($/M) | Output ($/M) | Speed (t/s) | First token | Audit |
|---|---|---|---|---|---|---|---|---|
L1 100% | gpt-5.1 | default | -86%$0.171/M Cache read$0.017/M | -86%$1.37/M | 95.9 t/s | 1.86 s | — | |
L1 100% | gpt-5.1-chat | default | -86%$0.171/M Cache read$0.017/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-chat-latest | default | -86%$0.171/M Cache read$0.017/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-2025-11-13 | default | -86%$0.171/M Cache read$0.017/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-2025-11-13 | default | -93%$0.086/M Cache read$0.0086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1-chat-latest | default | -93%$0.086/M Cache read$0.0086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1 | default | -93%$0.086/M Cache read$0.0086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1-chat | default | -93%$0.086/M Cache read$0.0086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1 | default | $1.25/M | $10.00/M | — | — | — | |
L1 100% | gpt-5.1-2025-11-13 | default | $1.25/M | $10.00/M | — | — | — | |
L1 100% | gpt-5.1-all | default | $1.25/M | $10.00/M | — | — | — | |
L1 100% | gpt-5.1 | default | $0.014/request | - | — | — | — | |
L1 100% | gpt-5.1-high | CodeX_05_token | $0.0068/request | - | — | — | — | |
L1 100% | gpt-5.1-2025-11-13 | default | -86%$0.171/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-chat | default | -86%$0.171/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-chat-2025-11-13 | default | -86%$0.171/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-chat-latest | default | -86%$0.171/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-low | CodeX_05_token | -93%$0.086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1-medium | CodeX_05_token | -93%$0.086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1-all | default | -86%$0.171/M | -86%$1.37/M | — | — | — |
Showing 20 model IDs of 206.
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Frequently Asked Questions
- What benchmark data does GPT-5.1 include?
- LMSpeed shows GPT-5.1 benchmark context, API price, output speed, first-token latency, and provider data across 1462 providers when those signals are available.
- What is the GPT-5.1 API price?
- GPT-5.1 has pricing from 1462 providers, ranging from $0.0027/request to $495.00/M. Yun API has the lowest listed price.
- What does the GPT-5.1 API pricing table include?
- The GPT-5.1 API pricing table compares 1462 providers by input price, output price, free tier status, speed, first-token latency, and recent health data when available.
- Which provider has the cheapest GPT-5.1 API pricing?
- Yun API currently has the lowest listed GPT-5.1 price at $0.0027/request across 1462 providers.
- Can I compare GPT-5.1 API price and speed together?
- Yes. LMSpeed shows GPT-5.1 API price, output speed, first-token latency, and provider health on the same page so you can compare cost and performance together.
- Is GPT-5.1 API free?
- Yes, GPT-5.1 free API options are available through 8 providerundefined other undefined} on LMSpeed, including 兔子API, 兔子API, 兔子API, 兔子API, 初叶🍂Furry API. These providers offer free API credits or a free tier with no per-token charges.
- Where can I get GPT-5.1 free API access?
- LMSpeed currently lists 8 free API providerundefined other undefined} for GPT-5.1: 兔子API, 兔子API, 兔子API, 兔子API, 初叶🍂Furry API. Check each provider row before using it because free tier limits can change.