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| 3 models | openaiOpenAI: GPT-5.5 Pro (batch)Remove × | openaiOpenAI: GPT-6.1 SolRemove × | reflectionReflection: Beam 1.0 501B A23BRemove × |
|---|---|---|---|
| What’s different | GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for... | Requires Responses API for tools; offers Ultrafast inference with US or EU data residency. | Apache-2.0 text model with 501B total and 23B active parameters; ships BF16, FP8 and NVFP4 weights. |
| Date | Apr 24, 2026Listed | Sep 29, 2026Released | Oct 16, 2026Released |
API prices USD · provider configuration shown below | |||
| Listed rate | $15.00 in / $90.00 out/ 1M tokensOpenAI · via OpenRouter · all routes ↗openai · prompt ≤ 272000 tokens | $1.00 in / $5.00 out/ 1M tokensOpenAI · via OpenRouter · all routes ↗openai/flex · tier=flex · prompt ≤ 272000 tokens | $0.25 in / $1.00 out/ 1M tokensNebius · via OpenRouter · all routes ↗nebius/fp8 · quantization=fp8 |
| Provider endpoints | 2 endpoints → | 10 endpoints → | 6 endpoints → |
Benchmarks Each result retains its evaluation configuration | |||
| AA Intelligence ↗4.3.2 | Not reported | 51.83 ↗Effort: max · MaxIndependent result | 30.33 ↗Effort not specifiedIndependent result |
| AA-Briefcase ↗1.1 | Not reported | 1,556.34 ↗Effort: max · MaxIndependent result | 976.2 ↗Effort not specifiedIndependent result |
| GDPval-AA ↗2.1 | Not reported | 1,592.1 ↗Effort: max · MaxIndependent result | 1,177.08 ↗Effort not specifiedIndependent result |
| AutomationBench-AA ↗AA Index 4.3.2 collection | Not reported | 64.87% ↗Effort: max · MaxIndependent result | 48.46% ↗Effort not specifiedIndependent result |
| Terminal-Bench 4.0 · AA ↗ | Not reported | 56.06% ↗Effort: max · MaxHarness unreportedIndependent result | 3.03% ↗Effort not specifiedHarness unreportedIndependent result |
| SciCode ↗AA Index 4.3.2 collection | Not reported | 54.17% ↗AA · Under reviewEffort: max · MaxIndependent result | 48.5% ↗AA · Under reviewEffort not specifiedIndependent result |
| Humanity’s Last Exam ↗AA Index 4.3.2 collection | Not reported | 52.92% ↗Effort: max · MaxIndependent result | 34.66% ↗Effort not specifiedIndependent result |
| GDP.pdf ↗AA Index 4.3.2 collection | Not reported | 31% ↗Effort: max · MaxIndependent result | 11.6% ↗Effort not specifiedIndependent result |
| CritPt ↗AA Index 4.3.2 collection | Not reported | 31.71% ↗AA · Under reviewEffort: max · MaxIndependent result | 13.14% ↗AA · Under reviewEffort not specifiedIndependent result |
| AA-Omniscience ↗AA Index 4.3.2 collection | Not reported | 41.53 ↗Effort: max · MaxIndependent result | 1.5 ↗Effort not specifiedIndependent result |
| AA-LCR ↗1.1 | Not reported | 83% ↗Effort: max · MaxIndependent result | 78% ↗Effort not specifiedIndependent result |
| LiveBench ↗2.0 · 2026-10-14 (dataset 2026-09-02) | Not reported | 85.41% ↗Effort: max · single run · equal mean of 7 suitesIndependent result | 55.5% ↗Effort: max · single run · equal mean of 7 suitesIndependent result |
| LiveBench Design ↗2.0 · 2026-10-14 (dataset 2026-09-02) | Not reported | 82.1% ↗Effort: max · single runIndependent result | 67.9% ↗Effort: max · single runIndependent result |
| LiveBench Research ↗2.0 · 2026-10-14 (dataset 2026-09-02) | Not reported | 83.5% ↗Effort: max · single runIndependent result | 72.8% ↗Effort: max · single runIndependent result |
| LiveBench Browser Use ↗2.0 · 2026-10-14 (dataset 2026-09-02) | Not reported | 88% ↗Effort: max · single runIndependent result | 0% ↗Effort: max · single runIndependent result |
| LiveBench Coding ↗2.0 · 2026-10-14 (dataset 2026-09-02) | Not reported | 96% ↗Effort: max · single runIndependent result | 83.9% ↗Effort: max · single runIndependent result |
| LiveBench Agentic ↗2.0 · 2026-10-14 (dataset 2026-09-02) | Not reported | 73% ↗Effort: max · single runIndependent result | 17.3% ↗Effort: max · single runIndependent result |
| LiveBench Data Analysis ↗2.0 · 2026-10-14 (dataset 2026-09-02) | Not reported | 82.7% ↗Effort: max · single runIndependent result | 66.4% ↗Effort: max · single runIndependent result |
| LiveBench Reasoning ↗2.0 · 2026-10-14 (dataset 2026-09-02) | Not reported | 92.6% ↗Effort: max · single runIndependent result | 80.2% ↗Effort: max · single runIndependent result |
Specifications | |||
| Context window | 1.1M | 1.1M | 1M |
| Max output | 128K | 128K | 943.7K |
| Parameters | — | — | 501B |
| Tool calling | Supported | Supported | Supported |
| Structured output | Supported | Supported | Supported |
| Image input | Supported | Supported | Not reported |
| Reasoning | Supported | Supported | Supported |
| Prompt caching | Not reported | Supported | Supported |
| Open weights | Not reported | Not reported | Supported |