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 GPT-5OpenAI |  Claude 4.8 OpusAnthropic |  Grok 4xAI |  Gemini 2.5 Pro | |
|---|---|---|---|---|
| Vendor | OpenAI | Anthropic | xAI | |
| Family | GPT | Claude | Grok | Gemini |
| Release date | 2025-08-07 | 2026-05-28 | 2025-07-09 | 2025-03-25 |
| Context window | 400,000 tokens | 1,000,000 tokens | 256,000 tokens | 2,000,000 tokens |
| Parameters | — | — | — | — |
| Modality | text, vision, audio | text, vision | text | text, vision, audio, video |
| License | proprietary | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary | proprietary |
| Description | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | Anthropic's flagship hybrid-reasoning model — Opus 4.8 pushes coding and AI-agent workflows further (agentic coding 69.2% vs 64.3% on 4.7; multidisciplinary reasoning 57.9% vs 54.7%). 1M-token context, $5/$25 per MTok pricing held flat from Opus 4.7. Introduces Dynamic Workflows for Claude Code (research preview). GA on Anthropic API (`claude-opus-4-8`), AWS Bedrock, Google Vertex, Microsoft Foundry, and GitHub Copilot. | — | Predecessor to Gemini 3 Pro. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | 85.1% | — | 82.8% | 84.1% |
| GPQA-D | 87.3% | — | 87.5% | 84.0% |
| HumanEval | 95.2% | — | — | — |
| Aider | 85.4% | — | 72.5% | — |
| AIME-25 | 91.0% | — | 86.1% | — |
| LiveCB | 74.5% | — | 65.3% | — |
| MMMU | 74.1% | — | — | 72.4% |
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Claude 4.8 Opus✓
Qwen3.7-MaxmaxGemini 3.5maxGemini OmnimaxGPT-5.5maxQwen3.6-27Bmax
DeepSeek-V4-FlashmaxDeepSeek-V4-PromaxGemini 3 PromaxClaude 4.7 OpusmaxClaude 4.6 SonnetmaxClaude 4.5 HaikumaxDeepSeek-V3.1maxGPT-5✓Grok 4✓Gemini 2.5 FlashmaxQwen3 235Bmaxo3maxGPT-4.1max
Llama 4 ScoutmaxLlama 4 MaverickmaxGemini 2.5 Pro✓DeepSeek-R1max
Mistral Large 2maxMax 4 models. Remove one to add another.