Well atleast with gtx750ti, es2_info says OpenGL ES 3.1:
$ es2_info
EGL_VERSION = 1.4
EGL_VENDOR = NVIDIA
EGL_EXTENSIONS = EGL_NV_system_time EGL_KHR_surfaceless_context EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_config_attribs EGL_KHR_fence_sync EGL_NV_sync EGL_KHR_reusable_sync EGL_KHR_create_context EGL_EXT_create_context_robustness EGL_KHR_stream EGL_KHR_stream_fifo EGL_KHR_stream_producer_eglsurface EGL_KHR_stream_consumer_gltexture EGL_NV_stream_sync EGL_KHR_get_all_proc_addresses EGL_IMG_context_priority EGL_NV_post_sub_buffer EGL_KHR_image_pixmap EGL_EXT_buffer_age
EGL_CLIENT_APIS = OpenGL_ES
GL_VERSION: OpenGL ES 3.1 NVIDIA 343.22
GL_RENDERER: GeForce GTX 750 Ti/PCIe/SSE2
GL_EXTENSIONS:
GL_EXT_blend_minmax, GL_EXT_color_buffer_float,
GL_EXT_color_buffer_half_float, GL_EXT_copy_image, GL_EXT_debug_label,
GL_EXT_draw_buffers_indexed, GL_EXT_frag_depth,
GL_EXT_geometry_point_size, GL_EXT_geometry_shader, GL_EXT_gpu_shader5,
GL_EXT_map_buffer_range, GL_EXT_occlusion_query_boolean,
GL_EXT_robustness, GL_EXT_separate_shader_objects,
GL_EXT_shader_implicit_conversions, GL_EXT_shader_integer_mix,
GL_EXT_shader_io_blocks, GL_EXT_shadow_samplers, GL_EXT_sRGB,
GL_EXT_sRGB_write_control, GL_EXT_tessellation_point_size,
GL_EXT_tessellation_shader, GL_EXT_texture_border_clamp,
GL_EXT_texture_buffer, GL_EXT_texture_compression_dxt1,
GL_EXT_texture_compression_s3tc, GL_EXT_texture_cube_map_array,
GL_EXT_texture_filter_anisotropic, GL_EXT_texture_format_BGRA8888,
GL_EXT_texture_rg, GL_EXT_texture_sRGB_decode, GL_EXT_texture_storage,
GL_EXT_texture_view, GL_EXT_unpack_subimage, GL_KHR_debug, GL_NV_bgr,
GL_NV_bindless_texture, GL_NV_blend_equation_advanced,
GL_NV_blend_equation_advanced_coherent, GL_NV_copy_buffer,
GL_NV_copy_image, GL_NV_draw_buffers, GL_NV_draw_instanced,
GL_NV_draw_texture, GL_NV_EGL_stream_consumer_external,
GL_NV_explicit_attrib_location, GL_NV_fbo_color_attachments,
GL_NV_framebuffer_blit, GL_NV_framebuffer_multisample,
GL_NV_generate_mipmap_sRGB, GL_NV_instanced_arrays,
GL_NV_occlusion_query_samples, GL_NV_non_square_matrices,
GL_NV_pack_subimage, GL_NV_packed_float, GL_NV_packed_float_linear,
GL_NV_pixel_buffer_object, GL_NV_read_buffer, GL_NV_read_depth,
GL_NV_read_depth_stencil, GL_NV_read_stencil, GL_NV_secure_context,
GL_NV_shadow_samplers_array, GL_NV_shadow_samplers_cube,
GL_NV_sRGB_formats, GL_NV_texture_array, GL_NV_texture_border_clamp,
GL_NV_texture_compression_latc, GL_NV_texture_compression_s3tc,
GL_NV_texture_compression_s3tc_update, GL_NV_timer_query,
GL_KHR_blend_equation_advanced, GL_KHR_blend_equation_advanced_coherent,
GL_OES_compressed_ETC1_RGB8_texture, GL_OES_depth24, GL_OES_depth32,
GL_OES_depth_texture, GL_OES_depth_texture_cube_map, GL_OES_EGL_image,
GL_OES_EGL_image_external, GL_OES_EGL_sync, GL_OES_element_index_uint,
GL_OES_fbo_render_mipmap, GL_OES_get_program_binary, GL_OES_mapbuffer,
GL_OES_packed_depth_stencil, GL_OES_rgb8_rgba8, GL_OES_sample_shading,
GL_OES_sample_variables, GL_OES_shader_image_atomic,
GL_OES_shader_multisample_interpolation, GL_OES_standard_derivatives,
GL_OES_surfaceless_context, GL_OES_texture_npot, GL_OES_texture_float,
GL_OES_texture_float_linear, GL_OES_texture_half_float,
GL_OES_texture_half_float_linear, GL_OES_texture_stencil8,
GL_OES_texture_storage_multisample_2d_array, GL_OES_vertex_array_object,
GL_OES_vertex_half_float