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LMSpeed is an AI model directory for comparing API price, output speed, first-token latency, provider coverage, and benchmark data. Use it to narrow your model and provider choice, then test the endpoint that fits your workload.
Price, speed, latency, and availability can change. Treat this table as a current signal and verify your own endpoint before you deploy.
| Release date | |||||||||||||||
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| Context1.1M | Input$1.00/M | Output$6.00/M | Providers |
Agents, Coding, Reasoning, and the other capability columns are 0–100 observed-capability estimates relative to the eligible model population in a dated Category Score V3 run.
They are not success rates, IQ scores, or an average across all eight categories. Read them with the 80% interval, measured dimensions, benchmark families, and evidence shown on each model page.
Each row brings together the information you need to compare an LLM API. Some fields are blank when LMSpeed has no current data for that model or provider.
Start with the decision that matters most for your workload, then compare the current rows before you test an endpoint.
LMSpeed runs standardized five-round API speed tests on each model, measuring output throughput (tokens per second), first-token latency, and total response time across multiple providers.
Latency varies by provider and model. Use the LMSpeed model directory to sort by latency and find the model with the fastest first-token response time. Check the latency leaderboard for monthly rankings.
LMSpeed lists input and output token prices per million for each model across available providers. Sort by price to find a lower-cost option, or filter by provider to compare rates side by side.
61±7.6 |
57.3±9.3E |
58.9±10.8E |
56.5±16.7P |
62.4±16.1P |
— |
50.1±16.1P |
— |
| Throughput — | Latency — |
| Release date2026-07-09 |
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| GPT-5.6 TerraOpenAI | Context1.1M | Input$2.50/M | Output$15.00/M | Providers +91 | 63.8±7.5 | 59.8±9.3E | 60.7±10.8E | 57±16.7P | 64.5±16.1P | — | 55.2±16.1P | 53.3±16.0P | Throughput — | Latency — | Release date2026-07-09 |
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| GPT-5.6 SolOpenAI | Context1.1M | Input$5.00/M | Output$30.00/M | Providers +93 | 68.4±7.4 | 62.9±9.3E | 62±10.8E | 57.2±16.7P | 67±16.1P | — | 60.9±16.1P | 53.9±16.0P | Throughput — | Latency — | Release date2026-07-09 |
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| GPT-4o Mini TranscribeOpenAI | Context128K | Input— | Output— | Providers +35 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date2026-05-01 |
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| GPT-4o TranscribeOpenAI | Context128K | Input— | Output— | Providers +37 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date2026-04-27 |
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| GPT-5.5 ProOpenAI | Context1.1M | Input— | Output— | Providers +24 | 61.3±16.1P | — | 64.5±14.0P | 61.1±16.1P | 57.2±16.1P | — | — | — | Throughput — | Latency — | Release date2026-04-24 |
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| GPT-5.5OpenAI | Context1.1M | Input$5.00/M | Output$30.00/M | Providers +110 | 62.5±5.0 | 60±8.7 | 61.4±8.8 | 60.6±14.0P | 56.9±16.1P | — | 56.4±16.1P | 55.1±16.0P | Throughput 44 t/s | Latency 6.29s | Release date2026-04-24 |
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| GPT-5.4 NanoOpenAI | Context400K | Input$0.200/M | Output$1.25/M | Providers +88 | 45.5±8.1 | 50±11.8E | 50.2±10.8E | 44.4±14.0P | 51.8±16.1P | — | 28.1±16.1P | 55.1±16.0P | Throughput 137 t/s | Latency 3.38s | Release date2026-03-17 |
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| GPT-5.4 MiniOpenAI | Context400K | Input$0.750/M | Output$4.50/M | Providers +225 | 51.5±8.1 | 57.7±11.8E | 56.7±10.8E | 48.1±14.0P | 49.7±16.1P | — | 46.3±16.1P | 54.1±16.0P | Throughput 134 t/s | Latency 3.54s | Release date2026-03-17 |
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| GPT-5.4 ProOpenAI | Context1.1M | Input$30.00/M | Output$180.00/M | Providers +65 | 60.5±16.1P | — | 62.2±11.4E | 62.2±16.1P | 56.8±16.1P | — | 73.1±16.1P | — | Throughput — | Latency — | Release date2026-03-05 |
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| GPT-5.4OpenAI | Context1.1M | Input$2.50/M | Output$15.00/M | Providers +277 | 56.6±5.1 | 62.9±10.3E | 59.5±10.8E | 59.9±15.1P | 57.6±16.1P | — | 53.7±6.7 | 54.3±16.0P | Throughput 49 t/s | Latency 4.45s | Release date2026-03-05 |
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| GPT-5.3OpenAI | Context128K | Input— | Output— | Providers +71 | — | — | — | — | — | — | — | — | Throughput 59 t/s | Latency 2.57s | Release date2026-03-03 |
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| GPT-5.3 CodexOpenAI | Context400K | Input$1.75/M | Output$14.00/M | Providers +242 | 53.5±6.6 | 59.2±8.5 | 60.7±10.8E | 55.3±16.0P | — | — | — | 54.9±16.0P | Throughput 78 t/s | Latency 3.91s | Release date2026-02-24 |
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| GPT-5.2 CodexOpenAI | Context400K | Input$1.75/M | Output$14.00/M | Providers +151 | 51.7±9.3E | 58.1±11.8E | 59.8±10.8E | 52.1±16.0P | — | — | — | 55.8±16.0P | Throughput 54 t/s | Latency 3.51s | Release date2026-01-14 |
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| GPT-5.2OpenAI | Context400K | Input$1.75/M | Output$14.00/M | Providers +233 | 48.7±6.6 | 57±8.5 | 54.9±6.5 | 56.2±14.0P | 55.9±16.1P | — | 42.8±9.0E | 54.9±16.0P | Throughput 56 t/s | Latency 3.43s | Release date2025-12-10 |
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| GPT-5.2 ProOpenAI | Context400K | Input— | Output— | Providers +83 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date2025-12-10 |
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| GPT-5.1 Codex MaxOpenAI | Context400K | Input— | Output— | Providers +120 | 50.5±16.0P | 51.1±11.8E | 55.9±10.8E | 51.2±16.0P | — | — | — | 52.9±16.0P | Throughput 56 t/s | Latency 6.29s | Release date2025-12-04 |
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| GPT-5.1OpenAI | Context400K | Input$1.25/M | Output$10.00/M | Providers +147 | 48.2±9.3E | 49.4±11.2E | 52.8±8.7 | 54.2±16.0P | 54±16.1P | — | — | 53.9±16.0P | Throughput 142 t/s | Latency 2.78s | Release date2025-11-13 |
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| GPT-5.1 CodexOpenAI | Context400K | Input$1.25/M | Output$10.00/M | Providers +128 | 50.1±9.3E | 50.8±11.2E | 56.3±8.7 | 51.2±16.0P | 54.1±16.1P | — | — | 52.9±16.0P | Throughput — | Latency — | Release date2025-11-13 |
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| GPT-5.1 Codex MiniOpenAI | Context400K | Input$0.250/M | Output$2.00/M | Providers +119 | — | 57.2±13.9P | 53.5±11.1E | — | 53.4±16.1P | — | — | — | Throughput 136 t/s | Latency 4.28s | Release date2025-11-13 |
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| GPT-5 Image MiniOpenAI | Context400K | Input— | Output— | Providers +3 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date2025-10-16 |
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| GPT-5 ImageOpenAI | Context400K | Input— | Output— | Providers +4 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date2025-10-14 |
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| GPT-5 ProOpenAI | Context400K | Input— | Output— | Providers +66 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date2025-10-06 |
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| GPT-5 CodexOpenAI | Context400K | Input$1.25/M | Output$10.00/M | Providers +121 | — | 56.6±13.9P | 57.1±11.1E | — | 54.7±16.1P | — | — | — | Throughput 154 t/s | Latency 2.76s | Release date2025-09-23 |
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| GPT-5OpenAI | Context400K | Input$1.25/M | Output$10.00/M | Providers +146 | 45.9±9.3E | 49.3±11.2E | 51.9±8.7 | 50.1±16.0P | 61.5±11.8E | — | — | 53.1±16.0P | Throughput 88 t/s | Latency 6.23s | Release date2025-08-07 |
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| GPT-5 MiniOpenAI | Context400K | Input$0.250/M | Output$2.00/M | Providers +104 | — | 49.8±11.2E | 53.4±11.1E | — | 52.2±16.1P | — | — | — | Throughput 90 t/s | Latency 7.03s | Release date2025-08-07 |
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| GPT-5 NanoOpenAI | Context400K | Input$0.050/M | Output$0.400/M | Providers +103 | — | 51.7±13.9P | 48.2±11.1E | — | 50.9±16.1P | — | — | — | Throughput 123 t/s | Latency 10.60s | Release date2025-08-07 |
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| gpt-oss-120bOpenAI | Context131.1K | Input$0.150/M | Output$0.600/M | Providers +2 | 36.9±6.2 | 50.8±11.2E | 50.3±8.7 | 43.6±14.0P | 53.7±16.1P | 31.5±17.3P | — | 52.5±16.0P | Throughput — | Latency — | Release date2025-08-05 |
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| GPT-OSS | Context131.1K | Input— | Output— | Providers +127 | — | — | — | — | — | — | — | — | Throughput 390 t/s | Latency 2.28s | Release date2025-08-05 |
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| gpt-oss-20bOpenAI | Context131.1K | Input$0.060/M | Output$0.200/M | Providers | 38±9.3E | 48.4±11.2E | 44.6±8.7 | 36.1±16.0P | 52.9±16.1P | — | — | 51.2±16.0P | Throughput — | Latency — | Release date2025-08-05 |
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| GPT-4.1OpenAI | Context1.0M | Input$2.00/M | Output$8.00/M | Providers +103 | 39.9±11.8E | 38.8±11.2E | 49.3±8.7 | 57±17.4P | 49±9.3E | — | — | 42.1±11.9E | Throughput 85 t/s | Latency 1.92s | Release date2025-04-14 |
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| GPT-4.1 MiniOpenAI | Context1.0M | Input$0.400/M | Output$1.60/M | Providers +105 | 41.3±11.8E | 39.5±11.2E | 45.8±8.7 | 49.3±17.4P | 49.9±9.3E | — | — | 42.4±11.9E | Throughput 93 t/s | Latency 2.69s | Release date2025-04-14 |
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| GPT-4.1 NanoOpenAI | Context1.0M | Input$0.100/M | Output$0.400/M | Providers +96 | 33.3±11.8E | 41.3±13.9P | 38±8.7 | 33.7±17.4P | 45.1±9.3E | — | — | 37±11.9E | Throughput 140 t/s | Latency 1.78s | Release date2025-04-14 |
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| GPT-4o Mini SearchOpenAI | Context128K | Input— | Output— | Providers +34 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date2025-03-12 |
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| GPT-4o SearchOpenAI | Context128K | Input— | Output— | Providers +38 | — | — | — | — | — | — | — | — | Throughput 61 t/s | Latency 3.47s | Release date2025-03-12 |
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| GPT-4oOpenAI | Context128K | Input$2.50/M | Output$10.00/M | Providers +124 | 39.1±16.0P | 46.7±13.9P | 40.5±8.7 | 50±16.0P | 42.1±9.3E | — | — | 41.5±16.0P | Throughput 82 t/s | Latency 3.44s | Release date2024-11-20 |
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| GPT-4o (2024-08-06)OpenAI | Context128K | Input$2.50/M | Output$10.00/M | Providers | — | 45±13.9P | 40.3±13.9P | — | 46.1±11.8E | — | — | — | Throughput — | Latency — | Release date2024-08-06 |
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| GPT-4o MiniOpenAI | Context128K | Input$0.150/M | Output$0.600/M | Providers +114 | 32.5±16.0P | 38.1±13.9P | 40.5±11.1E | 54.6±16.0P | 46±11.8E | — | — | 40.4±16.0P | Throughput 84 t/s | Latency 4.10s | Release date2024-07-18 |
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| GPT-4o (2024-05-13)OpenAI | Context128K | Input$5.00/M | Output$15.00/M | Providers | — | 44.1±13.9P | 43.7±11.1E | — | 45.9±11.8E | — | — | — | Throughput — | Latency — | Release date2024-05-13 |
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| GPT-4 TurboOpenAI | Context128K | Input$10.00/M | Output$30.00/M | Providers +67 | — | 44±13.9P | 43.6±11.8E | 54.8±16.0P | 45.7±11.8E | — | — | — | Throughput 50 t/s | Latency 0.97s | Release date2024-04-09 |
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| GPT-3.5 Turbo (older v0613)OpenAI | Context4.1K | Input— | Output— | Providers— | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date2024-01-25 |
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| GPT-3.5 TurboOpenAI | Context16.4K | Input$0.500/M | Output$1.50/M | Providers +89 | — | 48.9±18.4P | 33.8±11.8E | — | 37.3±16.0P | — | — | — | Throughput 115 t/s | Latency 2.21s | Release date2024-01-25 |
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| GPT-3.5 Turbo InstructOpenAI | Context4.1K | Input— | Output— | Providers +39 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date2023-09-28 |
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| GPT-4OpenAI | Context8.2K | Input$30.00/M | Output$60.00/M | Providers +72 | — | 49.5±18.4P | — | — | — | — | — | — | Throughput 35 t/s | Latency 0.74s | Release date2023-05-28 |
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| GPT-4o StudyOpenAI | Context— | Input— | Output— | Providers +4 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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| GPT-4o DALL-EOpenAI | Context— | Input— | Output— | Providers | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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| GPT-3.5 NetOpenAI | Context— | Input— | Output— | Providers +1 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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| GPT-4 DALL-EOpenAI | Context— | Input— | Output— | Providers +10 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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| GPT-4o AudioOpenAI | Context— | Input— | Output— | Providers +76 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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| GPT-4o Mini AudioOpenAI | Context— | Input— | Output— | Providers +33 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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| GPT-4o Mini RealtimeOpenAI | Context— | Input— | Output— | Providers +33 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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| GPT-4o RealtimeOpenAI | Context— | Input— | Output— | Providers +69 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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| GPT-4o Transcribe DiarizeOpenAI | Context— | Input— | Output— | Providers +16 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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| ChatGPT Image | Context— | Input— | Output— | Providers +15 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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| GPT-5 Codex MiniOpenAI | Context— | Input— | Output— | Providers +62 | — | — | — | — | — | — | — | — | Throughput 38 t/s | Latency 3.35s | Release date— |
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| GPT-4o ImageOpenAI | Context— | Input— | Output— | Providers +27 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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| GPT-4 NetOpenAI | Context— | Input— | Output— | Providers +2 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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| GPT Image 1.5OpenAI | Context— | Input— | Output— | Providers +106 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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| GPT-4 GizmoOpenAI | Context— | Input— | Output— | Providers +23 | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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| Net GPT-4o | Context— | Input— | Output— | Providers | — | — | — | — | — | — | — | — | Throughput — | Latency — | Release date— |
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An AI model directory is a searchable list of models and their comparison data. On LMSpeed, it brings together API price, throughput, first-token latency, provider coverage, and capability data when available.
Start with the metric that matters most for your workload. Then open a model page to compare provider data. Run your own speed test before you use an endpoint in production.
Yes. Price, availability, throughput, and latency can change by model, provider, and time. Use current page values as a comparison signal and confirm with your own endpoint test.
