feat: update Gemini models

Author: 6vision

common/const.py

@@ -62,7 +62,10 @@
 GEMINI_PRO = "gemini-1.0-pro"
 GEMINI_15_flash = "gemini-1.5-flash"
 GEMINI_15_PRO = "gemini-1.5-pro"
-GEMINI_20_flash_exp = "gemini-2.0-flash-exp"
+GEMINI_20_flash_exp = "gemini-2.0-flash-exp"  # exp结尾为实验模型，会逐步不再支持
+GEMINI_20_FLASH = "gemini-2.0-flash"  # 正式版模型
+GEMINI_25_FLASH_PRE = "gemini-2.5-flash-preview-05-20"  # preview为预览版模型 ，主要是新能力体验
+GEMINI_25_PRO_PRE = "gemini-2.5-pro-preview-05-06"
 
 
 GLM_4 = "glm-4"
@@ -103,7 +106,7 @@
               XUNFEI,
               ZHIPU_AI, GLM_4, GLM_4_PLUS, GLM_4_flash, GLM_4_LONG, GLM_4_ALLTOOLS, GLM_4_0520, GLM_4_AIR, GLM_4_AIRX,
               MOONSHOT, MiniMax,
-              GEMINI, GEMINI_PRO, GEMINI_15_flash, GEMINI_15_PRO,GEMINI_20_flash_exp,
+              GEMINI_25_PRO_PRE, GEMINI_25_FLASH_PRE, GEMINI_20_FLASH, GEMINI, GEMINI_PRO, GEMINI_15_flash, GEMINI_15_PRO, GEMINI_20_flash_exp,
               CLAUDE_4_OPUS, CLAUDE_4_SONNET, CLAUDE_3_OPUS, CLAUDE_3_OPUS_0229, CLAUDE_35_SONNET, CLAUDE_35_SONNET_1022, CLAUDE_35_SONNET_0620, CLAUDE_3_SONNET, CLAUDE_3_HAIKU, "claude", "claude-3-haiku", "claude-3-sonnet", "claude-3-opus", "claude-3.5-sonnet",
               "moonshot-v1-8k", "moonshot-v1-32k", "moonshot-v1-128k",
               QWEN, QWEN_TURBO, QWEN_PLUS, QWEN_MAX,